Get Free 2015 GMC SIERRA V8, 6.6L; OHV; 32V; DI; Diesel; Turbo TSBs

Released 5/17/2019
Oil Life Monitor Engine Control Module Update

Released 3/12/2018
Normal Characteristic - Sag Or Hesitation On Acceleration

Released 3/9/2018
Customer Satisfaction Program - Vehicle Communication Interface Module (VCIM) Programming Not Completed

Released 3/9/2018
Drivers Side Front Door Glass Does Not Move Up or Down and/or Inoperative or Jerky/Uneven Motion

Released 3/5/2018
Warm Air Exhausting from Driver and/or Passenger Front Seat Back into 2nd Row Seating Area Causing Occupant Discomfort

Released 3/1/2018
Procedure for Installation of an Aftermarket Trailer Brake Controller Or In Lieu Of Factory Trailer Brake Controller

Released 2/28/2018
Red LED, No WiFi Operation, and/or Limited OnStar Module Functionality After OnStar Module Replacement for Another Condition

Released 2/14/2018
OnStar, XM, GPS or Antenna Malfunction -- May Set DTC B2462, B2470 or B125C - and/or Water Leak on Headliner at Sun Visor or Overhead Console Areas, Possible Battery Drain Concern

Released 2/9/2018
Cluster DIC Display Dims or Fades with High Temperature (Normal Operation)

Released 2/6/2018
Aftermarket Installed Service, Tool or Utility Box Sagging, Mis-aligned, Forward Box Mount Bracket Fractured on Trucks Equipped with Aftermarket Bodies

Released 2/2/2018
Do Not Swap Modules in Vehicles With Global Electrical Systems

Released 2/2/2018
Information on Available BCM Calibrations to Restore Bulb Outage Detection on Vehicles Produced by a Second Stage Manufacturer (Upfitter), Turn Signals Flash Fast after Factory Box Removed

Released 12/7/2017
Disabling Auto Door Locks

Released 12/6/2017
Installation Of Electrical Aftermarket Accessories (Battery Ignition And Ground Connections)

Released 12/4/2017
Engineering Information - California Only - Pilot Initiative - Urgent Service Action Required

Released 11/27/2017
Creak Click Pop Crack Type Noise From Front Suspension/Frame Area While Making Turns

Released 11/21/2017
Water / Dust Through Openings Under The Bed Rails Near The Stake Pockets Or Gap At Tailgate

Released 11/20/2017
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 11/17/2017
Memory Mirror Positions Lost and/or Reverse Tilt is Inoperative

Released 11/9/2017
Compatibility of K2xx 22” Accessory Wheels and Tires Through GM Accessories -- Use of Altered Vehicle Certification Label

Released 11/8/2017
Special Coverage - Diesel Emission Fluid Tank Reservoir

Released 11/7/2017
Diagnostic Tip - Memory Features For Driver 3 Or 4

Released 10/20/2017
PQC 2015-2018 8L45 8L90 Automatic Transmission Park Actuator Rod Restriction

Released 10/16/2017
Tailgate And Cargo Loop Capacity

Released 9/28/2017
Diagnostic Tip: OnStar Vehicles with B101D and Symptom Codes

Released 9/25/2017
Diagnostic Tip - Service Driver Assist Message

Released 9/25/2017
Diagnostic Tip - Service Trailer Brake Message with DTC C111B C1112 C1113 C1114

Released 9/25/2017
EZ Lower Tailgate Opens Too Quickly / Additional Effort To Close

Released 7/25/2017
Warm Air Exhausting from Driver and/or Passenger Front Seat Back into 2nd Row Seating Area Causing Occupant Discomfort

Released 7/25/2017
Information on How to Prevent Inadvertent Vehicle Starting from Key Fob or OnStar Mobile Application

Released 7/14/2017
Click or Tick Noise on 3-4 Shift

Released 7/11/2017
Remote Start Inoperative / Power Lift-Gate Inoperative / Start And Stall / No Start / Blower Motor Stays On With Ignition Off / SES MIL / DTC P2537 P129D

Released 7/11/2017
Hood Ajar Message

Released 6/30/2017
Stalling - Hesitation - Lack Of Performance P018B and/Or P2635 Setting In High Ambient Temperatures

Released 6/28/2017
Poor, Weak and/or Lazy Seat Belt Retraction on Driver and Passenger Seat Belts

Released 6/22/2017
Customer Satisfaction - OnStar System Inoperative - Chip Corruption

Released 6/20/2017
Fuel Leak, Fuel Smell/Odor, Rubbing/Grinding/Clanking/Hitting/Banging/Popping/Thumping Noise from Under Vehicle, Fuel Gauge Reading Inaccurate

Released 6/19/2017
Diagnostic Tips for Engine Vibration

Released 6/15/2017
Coolant Loss And/Or Coolant Odor

Released 6/14/2017
Trailer Brake Controller Harness - Information for Adding an Aftermarket Trailer Brake Controller

Released 6/9/2017
Diagnostic Information to Determine if the Steering Gear OR Motor Kit Needs to be Replaced

Released 6/8/2017
Rough Idle in Drive

Released 5/24/2017
Service Engine Soon Indicator Lamp Dimly Lit While Engine Is Running

Released 5/16/2017
Brake Shudder While Towing Gooseneck and Fifth Wheel Trailers with Electric Brakes

Released 5/16/2017
Tailgate and Cargo Loop Capacity

Released 5/1/2017
Revised Wheel Balancer Mounting Instructions (Heavy Duty Models Only)

Released 4/14/2017
Steering Jerks Or Kicks Back / Reduced Power Steering Assist / Engine Stall / No Start / Service Stabilitrak / IPC / Radio / HVAC Goes Blank Various DTCs

Released 4/11/2017
Service ABS / TCS / Power Steering and/or Suspension Message DTC U0077 U0121 U0126 U0131 U0139 U0151 U0401 U0415 U0428 (Circuit 5986 High Resistance)

Released 3/24/2017
Spray-in Bed Liner General Information and Repair Procedures

Released 3/22/2017
Diagnostic Tip: Whistle Noise From Inside Vehicle

Released 2/3/2017
Normal Characteristic - Tailgate Cable Slack

Released 2/1/2017
Front Row Seat Back Appears To Lean Outward (Seat Cover Improperly Installed)

Released 2/1/2017
Normal Characteristic - Bump Feel Or Clunk Noise After A Stop

Released 1/26/2017
Customer Satisfaction Program - Service Part - Seat Adjuster End Stops Not Installed

Released 1/25/2017
Cluster DIC Display Dims Or Fades With High Temperature (Normal Operation)

Released 1/25/2017
Front Seat Lateral Movement and/or Unable To Install Front Seat Lateral Retainer When Performing PI1376 Or PI1183

Released 1/20/2017
Harsh 1-2, Harsh 3-1 Decel Downshift, Harsh Downshifts Under Heavy Throttle, AFM Transition and Step In Clunk During Downshift

Released 1/1/2017
Exhaust Leak or Vibration/Rattle Noise at Approximately 900 RPM, Fuel Smell, White Smoke, Oily Substance on Exhaust Downpipe

Released 12/21/2016
Service Park Assist Message at Start Up with DTC U0159 and/or False Alerts

Released 12/21/2016
Click Rattle or Squeak Noise from Dash Area

Released 12/20/2016
Information On Adding A Snowplow To A Light Duty Pick Up and/Or SUV

Released 12/19/2016
Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System Driver Information Center Messages

Released 12/19/2016
Information on Mounting Points for Pickup Box Accessories

Released 12/14/2016
Service Front Camera / Service Lane Departure Warning / Service Lane Keep Assist Message with DTC B1008 SYM4B

Released 12/14/2016
Creak Click Pop Crack Type Noise From Front Suspension/Frame Area While Making Turns

Released 12/6/2016
Delayed Engagement After Sitting With Engine Off - Clutch Slow to Fill

Released 12/1/2016
Installation Of Electrical Aftermarket Accessories (Battery Ignition And Ground Connections)

Released 11/30/2016
Click Rattle Or Squeak Noise From Dash Area

Released 11/30/2016
Disabling Auto Door Locks

Released 11/28/2016
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 11/23/2016
Engineering Information - Vehicle Crank with No Start or Stalling with DTC P0011 and/or P00C6 Set

Released 11/21/2016
Hood Flutter, Shake or Vibration at Highway Speeds or over Rough Road Conditions

Released 11/18/2016
Service Trailer Brake Message With DTCs C1112 C1113 C1114 C111B U1556 and/or U1505

Released 11/18/2016
Transmission Flare Between 1st and 2nd Gear Upon First Start Up of the Day Under Light Throttle

Released 11/17/2016
Special Coverage Adjustment - Diesel Emission Fluid Tank Reservoir

Released 11/16/2016
Information on Paint Color Variation Available to Match Vehicles with Visibly Lighter Paint Color

Released 11/16/2016
Diagnostic Tip for Excessive Smoke From Tail Pipe, DTC P2002 Set

Released 11/10/2016
Engineering Information - Check Trailer Message Displayed with No Trailer Connected

Released 11/2/2016
Customer Satisfaction Program - Vehicles with Key Codes Improperly Handled by Third Party

Released 10/13/2016
Engine Misfire/Tick Noise. Malfunction Indicator Lamp (MIL) Illuminated with DTC P0300 Set

Released 10/3/2016
SES Lamp Setting A P0106 And/or P0506

Released 10/3/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 9/27/2016
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 9/26/2016
EZ Lower Tailgate Opens Too Quickly / Additional Effort To Close

Released 9/12/2016
Dent/Ripple Appearance Around Wheel Well Opening

Released 9/9/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 8/24/2016
Engineering Information -- Rear Bumper Step Pad Melted or Warped

Released 8/17/2016
Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs

Released 8/11/2016
Back Up Alarm Inoperative And Needs To Be Connected During PDI

Released 8/10/2016
Product Safety - Brake Pedal Pivot Nut/Bolt Loose

Released 8/10/2016
Blu-Ray Movies Do Not Start After Play Icon Selected On Menu

Released 8/9/2016
Information for Fleet Vehicles - Ignition Key, Fob and Key Rings Configuration

Released 8/2/2016
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 8/1/2016
Information on Diesel Exhaust Fluid (DEF)

Released 7/28/2016
Engine Misfire, Ticking/Knocking Noise, No Compression due to Piston Damage, Malfunction Indicator Lamp (MIL) Illuminated

Released 7/8/2016
Disabling Auto Door Locks

Released 6/28/2016
Delayed Engagement After Sitting With Engine Off

Released 6/23/2016
Information on Vibration Analysis and Diagnostic

Released 6/23/2016
Cluster DIC Display Dims Or Fades With High Temperature (Normal Operation)

Released 6/22/2016
Filling the Cooling System, Diagnosing and Replacing Leaking Cylinder Head Gaskets on a 6.6 Duramax Diesel

Released 6/17/2016
Driver's Safety Alert Seat Cushion Discomfort (Haptic Motor Position)

Released 6/14/2016
Diagnostic Tip - Integrated Trailer Brake Control System

Released 6/13/2016
Engineering Information - Bang or Loud Noise with No Forward (Drive) or Reverse Ranges

Released 6/8/2016
Diagnostic Tip for Malfunction Indicator Light (MIL) Illuminated, DTC P0420 and P0430 Set

Released 6/8/2016
Check Trailer Wiring Message and/or Service Trailer Brake With DTC C1114

Released 6/1/2016
Trailer Hitch Platform Fractures

Released 5/27/2016
Emergency Vehicle Reduced Power

Released 5/12/2016
Engineering Information - Shake or Shudder on Light Throttle Acceleration or Steady State Cruise

Released 5/2/2016
Duramax Diesel Hard Start, No Start, DTCs P0087, P0088, P0191, P128E or Injection Pump Replacement

Released 4/29/2016
OnStar Diagnostic Alerts Sent When Vehicle is Being Serviced

Released 4/29/2016
Mobile Telephone Microphone Poor Performance

Released 4/27/2016
Repetitive Popping Noise from All Speakers

Released 4/19/2016
Water Leak And Or Wind Hiss Noise From Sunroof (Leak Between Sunroof Glass And Seal)

Released 4/18/2016
Customer Satisfaction - Tire Pressure Monitor Not Installed in Spare Tire

Released 4/14/2016
Service ABS / TCS / Power Steering and/or Suspension Message DTC U0077 U0121 U0126 U0131 U0139 U0151 U0401 U0415 U0428 (Circuit 5986 High Resistance)

Released 4/13/2016
Information on Tailgate (Endgate) Hinge Lubrication

Released 4/12/2016
Accessory Tonneau Cover Service Parts

Released 4/11/2016
Customer Satisfaction - Upfitter Auxiliary Switches

Released 4/11/2016
Tailgate Contacts Bed Floor When Closed

Released 4/11/2016
Spray-in Bed Liner General Information and Repair Procedures

Released 4/7/2016
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission Has Ended

Released 4/7/2016
Front Row Seat Back Appears To Lean Outward (Seat Cover Improperly Installed)

Released 4/5/2016
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen / Display Blank/ Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 3/30/2016
Customer Satisfaction - Intake Air Heater (IAH) Fires

Released 3/24/2016
Click Rattle Or Squeak Noise From Dash Area

Released 3/11/2016
Accessory Tri-Fold Tonneau Cover Prevents Endgate/Tailgate From Closing

Released 3/10/2016
Diagnostic Tip - Outside Temperature Will Not Update

Released 3/3/2016
Tailgate Contacts Bed Floor When Closed

Released 3/2/2016
Low Treble Audio From Front Door Speakers

Released 3/2/2016
5th Wheel Or Camper Wiring Harness Location

Released 2/19/2016
Customer Satisfaction - Trailer Hitch Platform Welds

Released 2/15/2016
Diagnostic Aid: Vehicle Position Indicator Showing Incorrect Location After Making A Turn

Released 2/12/2016
Spray-in Bed Liner General Information and Repair Procedures

Released 2/9/2016
Oversized and/or Stripped Seat Belt Retractor Bolts

Released 2/9/2016
Cold Engine Tick Noise That May Last Up To 50 Seconds

Released 2/1/2016
Diagnostic Tip - Ambient Temperature Display / Information (Topology)

Released 12/14/2015
Diagnostic Tip - Exhaust Fluid Low - Exhaust Fluid Empty - Exhaust Fluid Range and Service Exhaust Fluid Messages Difficult To Reset - Including Cold Weather Operation

Released 12/11/2015
Recovery Process from a Controller Reprogramming Interruption

Released 12/1/2015
Information on Inside Rear View Mirror and Camera Loose

Released 11/30/2015
Oil Pressure Gauge Fluctuation After Startup and Over 3700 RPM

Released 11/25/2015
Rear Park Assist Symbols Unavailable Message / No Steering Guide Lines / Rear Park Assist Warning Triangle Displayed Incorrectly

Released 11/20/2015
Information on Inside Rear View Mirror Loose

Released 11/20/2015
TAC Part Restriction for US Dealers - Navigation Radio, Radio, Human Machine Interface, Media Player, Radio Display, and Radio Control/Integrated Center Stack

Released 11/19/2015
Customer Satisfaction - Exhaust Heat Shield Missing

Released 11/12/2015
Blank Screen After Startup and Reverse, Rear View Camera Message On, Touch Screen Inoperable, Bluetooth and Navigation Concerns

Released 11/12/2015
Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs

Released 11/12/2015
Information on Available BCM Calibrations to Restore Bulb Outage Detection on Vehicles Produced by a Second Stage Manufacturer (Upfitter), Turn Signals Flash Fast after Factory Box Removed

Released 11/9/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 11/9/2015
Radio HVAC IPC Blank Out When Operating A Snow Plow

Released 11/6/2015
Diagnostic Tips for Reduced Acceleration at Low Speed and/or Transmission Slipping from a Launch, DTC P0751 Set

Released 11/4/2015
Disabling Or Removing CNG (Compressed Natural Gas) Fuel Systems

Released 11/3/2015
Spray-in Bed Liner General Information and Repair Procedures

Released 11/3/2015
Service Update for Inventory and Customer Vehicles - Door Pad without Mirror Switch - Expires with Base Warranty

Released 10/31/2015
Hood Flutter, Shake or Vibration at Highway Speeds or over Rough Road Conditions

Released 10/31/2015
Drivers Power or Memory Seat and/or Power Adjustable Pedals Inoperative (Inspect For Poor Terminal Tension)

Released 10/31/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 10/31/2015
Normal Characteristic - Tailgate Cable Slack

Released 10/31/2015
Front Side Door Armrest Cover Trim Squeak Noise

Released 10/31/2015
GM of Canada OnStar Cellular Communication Upgrade

Released 10/31/2015
Firm Garage Shifts, Start Up Clunk, DTC P16F3 (Reprogram TCM)

Released 10/31/2015
Information on Adding a Snowplow to a Light Duty Pick Up and/or SUV

Released 10/31/2015
Service Update for Inventory Vehicles Only - 8-Speed Transmission Harsh Shift - Expires December 31, 2015

Released 10/31/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 10/31/2015
Dent/Ripple Appearance Around Wheel Well Opening

Released 10/31/2015
Poor FM Radio Reception

Released 10/31/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Mis-Built with a Front Bumper Equipped with Parking Assist Alarm Sensors

Released 10/31/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
Diagnostic Tip - USB Port Inoperative Using Multi Media Interface Tester (MIT)

Released 10/31/2015
Customer Satisfaction - OnStar Module Battery Drain

Released 10/31/2015
Analog Gauges Inoperative at Startup or Cluster Display/Analog Gauges/Backlighting Inoperative Intermittently

Released 10/31/2015
Inspect XM/Cellular Mobile Phone/OnStar Antenna for Looseness or Damage, XM/Cellular/OnStar Reception Performance Degraded, Rattle/Flutter/Squeak Noise, Wind Noise/Whistle at Highway Speeds, Water Leak on Headliner at Sunvisor

Released 10/31/2015
Front Seat Lateral Movement and/or Click Type Noise While Driving

Released 10/31/2015
Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts

Released 10/31/2015
Diagnostic Tip: EL-51578 MOST Bus Diagnostic Tool Kit

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 10/31/2015
Analog Gauges Inoperative and/or Cluster Display at Startup or Cluster Display/Analog Gauges/Backlighting Inoperative Intermittently, Speedometer Analog Gauge Operates in Opposite Direction

Released 10/31/2015
Information on Dealer Snow Plow Prep Package for Non-Equipped Trucks

Released 10/31/2015
Malfunction Indicator Lamp (MIL) On, Poor Transmission Shift Performance/Quality

Released 10/31/2015
Headlight Performance (BCM Calibration and Bulbs)

Released 10/31/2015
White, Milky or Cloudy Appearance of Front Differential Fluid

Released 10/31/2015
Programming IPC Engine Hours into a Replacement IPC

Released 10/31/2015
Chime Volume Too Loud

Released 10/31/2015
Diagnostic Tips for DTC P2818: Transmission Control Solenoid Valve 8 Stuck On

Released 10/31/2015
No XM on Start-Up when Manually Tuned and/or Using Voice Recognition, No Radio Wake-Up, Rear View Camera and OnStar Handsfree Calling Issues, Favorite Stations Stored Twice and/or Disappear

Released 10/31/2015
Diagnostic Tip: Preventing Damage to Overhead Entertainment Displays During Service

Released 9/12/2015
Diagnostic Tip - Service Driver Assist Message

Released 9/12/2015
Service ABS / TCS / Power Steering and/or Suspension Message DTC U0077 U0121 U0126 U0131 U0139 U0401 U0415 U0428 (Circuit 5986 High Resistance)

Released 9/5/2015
Paint Chipping on Front Lower Bed Corners

Released 9/5/2015
Fuel Odor, Fuel Leaks and/or Hard Start

Released 9/5/2015
MIL Illuminated, DTC P16F3 with Message Displayed Engine Power is Reduced after Cold Start

Released 9/5/2015
MIL Illuminated with Firm Shifts, Shudder, Engine RPM Flare and DTCs P0606, P16F3 or P2818

Released 8/29/2015
Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting (U.S. and Canada Only)

Released 8/15/2015
Service Update for Inventory and Customer Vehicles - Glow Plug Control Module Software - Expires with Base Warranty

Released 8/1/2015
Steering Column Grind Pop Bind Shudder Noise And/Or Feeling When Turning

Released 8/1/2015
Service Update for Inventory and Customer Vehicles -

Released 8/1/2015
Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines Using GDS 2

Released 8/1/2015
Click - Rattle Or Squeak Noise From Dash Area

Released 8/1/2015
TAC Part Restriction -- Instrument Panel Cluster (IPC)

Released 8/1/2015
Diagnostic Tip - Service Trailer Brake Message With DTC C1115 C1116 C1117 Or C1118

Released 8/1/2015
Spray-in Bed Liner General Information and Repair Procedures

Released 7/25/2015
Information on Upgrading an IO5 Non-Navigation Radio to an IO6 Navigation Radio

Released 7/18/2015
Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting (U.S. and Canada Only)

Released 6/27/2015
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 6/27/2015
SES Lamp With Camshaft Actuator Codes After SI Diagnosis Have Been Followed

Released 6/27/2015
Diagnostic Tips for DTC P0741: Torque Converter Clutch Stuck Off

Released 6/20/2015
Driver Outside Wide Load Mirror Turn Signal Too Bright

Released 6/13/2015
Brake Shudder While Towing Gooseneck And Fifth Wheel Trailers With Electric Brakes

Released 6/13/2015
Customer Satisfaction - Dealer Installed Rear Seat Entertainment System

Released 6/1/2015
Spray-in Bed Liner General Information and Repair Procedures

Released 6/1/2015
Higher Than Expected Oil Consumption at 8600 GVW and Above

Released 6/1/2015
Service Update for Inventory and Customer Vehicles - Driver-Side Front and Rear Door Latch Fastener Torque - Expires with Base Warranty

Released 6/1/2015
Engineering Information — Fluid Leak from Front End of Allison Transmission

Released 6/1/2015
Service Update for Inventory and Customer Vehicles - 'Peek In' Odometer Display Incorrect - Expires with Base Warranty

Released 6/1/2015
Information on Incorrect Service Part Number on ECM Label

Released 6/1/2015
Shift Lever Contacts Ignition Key

Released 6/1/2015
Accessory Tonneau Cover Service Parts

Released 6/1/2015
Customer Satisfaction - No Start or MIL Indicator Power Reduction Mode

Released 6/1/2015
Accessory Tonneau Cover Service Parts

Released 6/1/2015
Engineering Information — Engine Oil Leak at Lifter Oil Manifold Assembly (LOMA) Seal

Released 6/1/2015
Revised Wheel Balancer Mounting Instructions (Heavy Duty Models Only)

Released 5/30/2015
Warm Air Exhausting from Driver and/or Passenger Front Seat Back into 2nd Row Seating Area Causing Occupant Discomfort

Released 5/16/2015
Engineering Information - One or More Key Transmitter(s) Inoperative or Lost Memory

Released 5/12/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 5/12/2015
Paint Peeling Above Anti-Chip Area

Released 5/12/2015
Drivers Safety Alert Seat Cushion Discomfort (Haptic Motor Position)

Released 5/12/2015
Information on Higher Than Expected Oil Consumption

Released 5/12/2015
Drivers Power Or Memory Seat And/Or Power Adjustable Pedals Inoperative (Inspect For Poor Terminal Tension)

Released 5/2/2015
Information on Diesel Exhaust Fluid (DEF) Filling Instructions at Delivery to the Customer

Released 5/2/2015
Service Air Bag Message Displayed in Driver Information Center (DIC), DTC B0014, B0021 or B001E Set with Symptom Code :04 or 0D

Released 5/2/2015
TAC Part Restriction -- Instrument Panel Cluster (IPC)

Released 5/2/2015
Various Vehicle Handling Concerns Suspension Noise Or Damaged Suspension Components Due To Vehicle Modifications

Released 4/25/2015
Inspect XM/Cellular Mobile Phone/OnStar Antenna for Looseness or Damage, XM/Cellular/OnStar Reception Performance Degraded, Rattle/Flutter/Squeak Noise, Wind Noise/Whistle at Highway Speeds, Water Leak on Headliner at Sunvisor

Released 4/25/2015
XM Weather Tab Highlights But Does Not Enter

Released 4/25/2015
Service Update for Inventory and Customer Vehicles - Double Cab Right-Rear Door Missing Laser Welds - Expires with Base Warranty

Released 4/18/2015
Service Engine Soon Indicator Lamp Dimly Lit While Engine Is Running

Released 4/11/2015
8L90 Repeat Harsh Shift After Latest TCM Calibration And Relearning The Shift Adapts

Released 4/11/2015
Malfunction Indicator Lamp (MIL) Illuminated, Fuel Tank Hard to Fill, DTCs P0442, P0446, P0455 or P0449 Set

Released 4/4/2015
Normal Characteristic - Detent or Click Felt As The Accelerator Is Pressed

Released 4/4/2015
Intermittent Clicking/Rubbing Noise when Side Door Glass is Moving Up or Down at Cold Temperatures

Released 4/4/2015
Intermittent Crank No Start With DTC P1682

Released 4/4/2015
Diagnostic Tip - Proper Battery Draw Procedure Prior To Condemning IPC

Released 4/4/2015
Normal Characteristic - Tailgate Cable Slack

Released 4/4/2015
Paint Peeling Above Anti-Chip Area

Released 3/28/2015
No Crank or Start Then Immediate Stall (Inspect Circuit 5199 Under Driver Sill Plate)

Released 3/28/2015
Customer Satisfaction - Heated Back Window Glass Structurally Weakened Due to Surface Flaw

Released 3/28/2015
Normal Characteristic - Key Off Radio Operation

Released 3/28/2015
Aftermarket ALDL or DLC Interface Devices Causing Multiple Issues

Released 3/28/2015
Back Up Alarm Inoperative And Needs To Be Connected During PDI

Released 3/14/2015
Front Row Seat Back Appears To Lean Outward (Seat Cover Improperly Installed)

Released 3/14/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 3/14/2015
Radio Display May Momentarily Flicker When Vehicle Is First Started

Released 3/7/2015
Diagnostic Tip for BCM DTC B101D SYM F0 Set with No Other Symptoms

Released 1/1/2015
Coolant Smell and/or Slight Leak at Radiator

Released 11/13/2014
6.6L Duramax Fuel Injection Pump Part Restriction

Released 11/13/2014
Whine Noise Operating In 4wd

Released 11/12/2014
Blower Motor Is Inoperative At Startup

Released 11/11/2014
Speedometer Needle Accuracy Information

Released 11/11/2014
Sunroof Reverses When Closing At Highway Speeds

Released 11/6/2014
Information For Servicing Fuel Injector Replacement and/or Fuel Injector Oil Ring Seal Replacement

Released 11/1/2014
Power Driver Seat Inoperative, Power Outside Mirror Inoperative

Released 10/22/2014
Disabling Auto Door Locks

Released 9/19/2014
Paint Peeling Above Anti-Chip Area

Released 8/28/2014
Information on Diesel Exhaust Fluid (DEF) Filling Instructions, Frozen Tank Status and General Information

Released 8/26/2014
Product Safety - Incomplete Weld on Seat Hook Assembly

Released 8/26/2014
Information on Identifying Duramax Diesel Overpower Engine Breakdown/Non-Function Due to Aftermarket Power-Up Devices vs Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain Components, DTC P003A or P111D Set

Released 8/21/2014
Product Safety - All Weather Floor Mats Used with Vinyl Floor

Released 8/21/2014
Service 4 Wheel Drive Message After Flat/Dinghy Towing

Released 8/19/2014
CHMSL Wiring For Aftermarket Bed Cap Topper

Released 8/15/2014
Duramax Diesel Airflow Leak Equivalency Ratio Or Induction System Leak Indication And P0101

Released 8/8/2014
Concerns Or Questions Regarding The Installation Of Dealer Installed Accessories

Released 8/7/2014
Inside Rear View Mirror is Loose and/or Mirror Mounting Bracket Fell Off

Released 8/1/2014
Product Safety - Incomplete Weld on the Seat Hook Bracket Assembly

Released 8/1/2014
Product Safety - Incomplete Weld on the Seat Hook Bracket Assembly

Released 7/30/2014
TAC Part Restriction – Instrument Panel Cluster (IPC)

Released 7/28/2014
Accessory Tri-Fold Tonneau Cover Prevents Endgate/Tailgate From Closing

Released 7/25/2014
EZ Lower Tailgate Opens Too Quickly / Additional Effort To Close

Released 7/16/2014
Duramax Diesel Glow Plugs Difficult to Install Due to Carbon Buildup - New Glow Plug Bore Reamer Available

Released 7/14/2014
Powertrain and Various Electrical/Electronic Control Issues

Released 7/8/2014
Procedure For Emailing Global Diagnostic System 2 (GDS2) Session Log To

Released 6/20/2014
F/CMVSS Noncompliance - Base Radio Lock Up

Released 6/19/2014
Radio Reprogramming Using Techline/Service Programming System (SPS) - Ensuring Correct Vehicle Selection

Released 6/16/2014
Rough Idle Or Vibration In Drive

Released 6/6/2014
Customer Satisfaction - Owner Manual Insert - Gross Combined Vehicle Weight Rating (GCVWR) Incorrect

Released 6/6/2014
Changing Outside Rearview Mirrors

Released 6/5/2014
Water/Dust Through Openings Under The Bed Rails Near The Stake Pockets

Released 5/16/2014
DTC Symptom Byte Documentation

Released 2/6/2014
Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion (Clean and Resurface Wheel Bead Seat)

Released 1/24/2014
Frame Labels Visible from Outside of Vehicle

Released 1/24/2014
GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period

Released 1/4/2014
Proper Wheel Installation and Wheel Torque Techniques

Released 12/12/2013
PQC Restriction Allison A1000 Transmission Valve Body RPO MW7

Released 8/28/2013
Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting

Released 8/28/2013
Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting

Released 5/3/2012
Information on Tire Radial Force Variation (RFV)

Released 2/24/2012
Part Restriction and Ordering Process Information for OnStar Vehicle Communication Interface Modules (VCIM) (GMNA Only)

Released 1/19/2012
Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Parts Center

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 1/12/2012
Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability

Released 11/28/2011
2015 Silverado HD and Sierra HD New Model Features and Service Guide

Released 11/2/2011
Engineering Information (EI) Process

Released 10/24/2011
Use of Surface Conditioning Disks When Cleaning Engine Gasket Sealing Surfaces and/or Reused Engine Parts

Released 10/13/2011
Eliminating Unwanted Odors in Vehicles

Released 8/23/2011
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 8/23/2011
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 7/1/2005
Hood Flutter, Shake or Vibration at Highway Speeds or over Rough Road Conditions

Released 11/22/2017
Unwanted Grade Braking, Low Power, and/or Transmission Busy Shifting / P057B, P057C, and/or P057D

Released 11/13/2017
Normal Mode Powertrain Grade Braking Feature

Released 9/25/2017
Diagnostic Tip - Service Trailer Brake Message with DTC C111B C1112 C1113 C1114

Released 6/14/2017
Trailer Brake Controller Harness - Information for Adding an Aftermarket Trailer Brake Controller

Released 6/8/2017
Diagnostic Tip - Check and/or Service Trailer Brake System message DTC C1114

Released 5/26/2017
Procedure for Installation of an Aftermarket Trailer Brake Controller Or In Lieu Of Factory Trailer Brake Controller

Released 5/16/2017
Brake Shudder While Towing Gooseneck and Fifth Wheel Trailers with Electric Brakes

Released 3/14/2017
Diagnostic Tip - Check and/or Service Trailer Brake System message DTC C1114

Released 1/31/2017
Brake Pedal Moves Or Self Applies At Full Turns

Released 1/26/2017
Diagnostic Tip - Check and/or Service Trailer Brake System message DTC C1114

Released 1/9/2017
Check Trailer Wiring Message and/or Service Trailer Brake with DTC C1114 (Check Trailer Ground and/or 7-way Connector)

Released 11/18/2016
Service Trailer Brake Message With DTCs C1112 C1113 C1114 C111B U1556 and/or U1505

Released 11/10/2016
Engineering Information - Check Trailer Message Displayed with No Trailer Connected

Released 10/17/2016
Engineering Information - Check Trailer Message Displayed with No Trailer Connected

Released 9/21/2016
Unwanted Grade Braking, Low Power, and/or Transmission Busy Shifting / P057B, P057C, and/or P057D

Released 9/13/2016
Adding Integrated Trailer Brake Controller RPO JL1

Released 8/30/2016
Diagnostic Tip - Service Trailer Brake Message with DTC C111B C1112 C1113 C1114

Released 8/10/2016
Product Safety - Brake Pedal Pivot Nut/Bolt Loose

Released 6/14/2016
Diagnostic Tip - Integrated Trailer Brake Control System

Released 5/11/2016
Brake Pedal Moves Or Self Applies At Full Turns

Released 3/24/2016
Product Safety - Brake Pedal Pivot Nut/Bolt Loose

Released 3/21/2016
Unwanted Grade Braking, Low Power, and/or Transmission Busy Shifting / P057B, P057C, and/or P057D

Released 1/19/2016
Diagnostic Tip - Service Trailer Brake Message With DTC U0415

Released 1/15/2016
Installation Of An Aftermarket Trailer Brake Controller In Lieu Of Factory Trailer Brake Controller

Released 10/31/2015
Normal Mode Powertrain Grade Braking Feature

Released 10/31/2015
Check Trailer Wiring Message and/or Service Trailer Brake With DTC C1114

Released 10/31/2015
Installation Of An Aftermarket Trailer Brake Controller In Lieu Of Factory Trailer Brake Controller

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 8/1/2015
Diagnostic Tip - Service Trailer Brake Message With DTC C1115 C1116 C1117 Or C1118

Released 6/20/2015
Service Update for Inventory and Customer Vehicles - Rear Brake Line Bracket Bolt to Rear Axle Loose

Released 6/13/2015
Brake Shudder While Towing Gooseneck And Fifth Wheel Trailers With Electric Brakes

Released 6/13/2015
Service Update for Inventory and Customer Vehicles - Rear Brake Line Bracket Bolt to Rear Axle Loose - Expires with Base Warranty

Released 5/30/2015
Diagnostic Tip - MDI Cable Or SAS Learning Issues When Repairing Service Stability/Traction Message Or Chassis Buss DTCs

Released 3/14/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 7/28/2014
Normal Mode Powertrain Grade Braking Feature

Released 7/25/2014
Unwanted Grade Braking, Low Power, and/or Transmission Busy Shifting

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 11/15/2016
Coolant Smell and/or Slight Leak at Radiator

Released 6/22/2016
Filling the Cooling System, Diagnosing and Replacing Leaking Cylinder Head Gaskets on a 6.6 Duramax Diesel

Released 2/23/2016
Coolant Leak at Surge Tank or Radiator Surge Tank Cap Leak

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Power Steering Hose Leak - Expires with Base Warranty

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Accessory Drive Idler Puller Failure - Expires with Base Warranty

Released 4/11/2015
Service Update for Inventory and Customer Vehicles - TCM Harness Routing - Expires with Base Warranty

Released 1/1/2015
Coolant Smell and/or Slight Leak at Radiator

Released 12/5/2014
New Tool Availability - EN-48974 - EGR Cooler Pressure Tester Adapter Set to Diagnose Duramax Diesel Engine EGR Cooler Engine Coolant Leaks into Combustion Chamber

Released 3/15/2018
No Crank / Start Then Immediate Stall / SES MIL / Service 4WD / Relay Clicking / Rearview Camera Inop / DTC (Inspect Ignition 1 voltage)

Released 3/9/2018
Drivers Side Front Door Glass Does Not Move Up or Down and/or Inoperative or Jerky/Uneven Motion

Released 3/1/2018
Procedure for Installation of an Aftermarket Trailer Brake Controller Or In Lieu Of Factory Trailer Brake Controller

Released 2/28/2018
Red LED, No WiFi Operation, and/or Limited OnStar Module Functionality After OnStar Module Replacement for Another Condition

Released 2/21/2018
Product Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 2/21/2018
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 2/2/2018
Information on Available BCM Calibrations to Restore Bulb Outage Detection on Vehicles Produced by a Second Stage Manufacturer (Upfitter), Turn Signals Flash Fast after Factory Box Removed

Released 12/7/2017
Disabling Auto Door Locks

Released 12/6/2017
Installation Of Electrical Aftermarket Accessories (Battery Ignition And Ground Connections)

Released 11/20/2017
Radio HVAC IPC Blank Out When Operating A Snow Plow

Released 11/20/2017
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 11/17/2017
Memory Mirror Positions Lost and/or Reverse Tilt is Inoperative

Released 11/14/2017
Radio HVAC IPC Blank Out When Operating A Snow Plow

Released 11/7/2017
Diagnostic Tip - Memory Features For Driver 3 Or 4

Released 10/16/2017
Back Up Alarm Inoperative And Needs To Be Connected During PDI

Released 10/2/2017
Radio Back Lighting Stays On After Key Off / Dead Battery / TCCM Repeat Failure

Released 9/28/2017
Intermittent Pop Noise From The Speakers Followed By A Reset Of The Radio and Clock

Released 9/25/2017
Diagnostic Tip - Service Trailer Brake Message with DTC C111B C1112 C1113 C1114

Released 7/28/2017
Product Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 7/25/2017
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 7/25/2017
Information on How to Prevent Inadvertent Vehicle Starting from Key Fob or OnStar Mobile Application

Released 7/11/2017
Remote Start Inoperative / Power Lift-Gate Inoperative / Start And Stall / No Start / Blower Motor Stays On With Ignition Off / SES MIL / DTC P2537 P129D

Released 7/11/2017
Hood Ajar Message

Released 7/10/2017
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 6/28/2017
Poor, Weak and/or Lazy Seat Belt Retraction on Driver and Passenger Seat Belts

Released 6/27/2017
Information on Available BCM Calibrations to Restore Bulb Outage Detection on Vehicles Produced by a Second Stage Manufacturer (Upfitter), Turn Signals Flash Fast after Factory Box Removed

Released 6/14/2017
Trailer Brake Controller Harness - Information for Adding an Aftermarket Trailer Brake Controller

Released 6/8/2017
Diagnostic Tip - Check and/or Service Trailer Brake System message DTC C1114

Released 5/26/2017
Service Front Camera / Service Lane Departure Warning / Service Lane Keep Assist Message with DTC B1008 SYM4B / IntelliBeam Headlight / Windshield Wind Rush Noise

Released 5/11/2017
Speedometer Indicates Lower Mph/Speeds Than Vehicle Is Actually Traveling (e.g. 5 mph when traveling 50 mph)

Released 4/21/2017
Information On Hill Descent Control (HDC) Function

Released 4/14/2017
Steering Jerks Or Kicks Back / Reduced Power Steering Assist / Engine Stall / No Start / Service Stabilitrak / IPC / Radio / HVAC Goes Blank Various DTCs

Released 4/11/2017
Service ABS / TCS / Power Steering and/or Suspension Message DTC U0077 U0121 U0126 U0131 U0139 U0151 U0401 U0415 U0428 (Circuit 5986 High Resistance)

Released 3/15/2017
Service Park Assist Message At Start Up With DTC U0159 / False Alerts / Park Assist Off Message

Released 3/15/2017
Speedometer Needle Accuracy Information

Released 3/14/2017
Diagnostic Tip - Check and/or Service Trailer Brake System message DTC C1114

Released 2/28/2017
Diagnostic Tip - SIR Lamp On

Released 2/1/2017
Diagnostic Tip - Content Theft Deterrent Inoperative

Released 1/26/2017
Diagnostic Tip - Check and/or Service Trailer Brake System message DTC C1114

Released 1/26/2017
Customer Satisfaction Program - Service Part - Seat Adjuster End Stops Not Installed

Released 1/25/2017
Cluster DIC Display Dims Or Fades With High Temperature (Normal Operation)

Released 1/11/2017
Low Volt Gauge Reading After Cold Start

Released 1/9/2017
Check Trailer Wiring Message and/or Service Trailer Brake with DTC C1114 (Check Trailer Ground and/or 7-way Connector)

Released 1/4/2017
Installation Of Upfitter Auxiliary Switches (RPO 9L7)

Released 12/21/2016
Service Park Assist Message at Start Up with DTC U0159 and/or False Alerts

Released 12/21/2016
Click Rattle or Squeak Noise from Dash Area

Released 12/12/2016
CHMSL Wiring For Aftermarket Bed Cap Topper

Released 12/12/2016
No Crank / Start Then Immediate Stall / SES MIL / Service 4WD / Relay Clicking / Rearview Camera Inop / DTC (Inspect Ignition 1 voltage)

Released 12/1/2016
Headlamps Inoperative After Switching To Snow Plow Lights (GM Upfitter 116)

Released 12/1/2016
Installation Of Electrical Aftermarket Accessories (Battery Ignition And Ground Connections)

Released 11/30/2016
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen / Display Blank/ Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System / SES MIL DTC B3101 B144C C0710 C0544 P0106 P0107 P2122 P2123 P2127 P2128 P2138 U002

Released 11/30/2016
Disabling Auto Door Locks

Released 11/10/2016
Engineering Information - Check Trailer Message Displayed with No Trailer Connected

Released 11/7/2016
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 11/2/2016
Customer Satisfaction Program - Vehicles with Key Codes Improperly Handled by Third Party

Released 10/17/2016
Engineering Information - Check Trailer Message Displayed with No Trailer Connected

Released 10/10/2016
Diagnostic Tip - Outside Temperature Will Not Update Or Inaccurate

Released 9/19/2016
Speedometer Indicates Lower Mph/Speeds Than Vehicle Is Actually Traveling (e.g. 5 mph when traveling 50 mph)

Released 9/15/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 9/13/2016
Adding Integrated Trailer Brake Controller RPO JL1

Released 9/9/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 8/30/2016
Unable To Complete SPS IMMO Immobilizer Theft Learn

Released 8/30/2016
Diagnostic Tip - Service Trailer Brake Message with DTC C111B C1112 C1113 C1114

Released 8/30/2016
Radio Back Lighting Stays On After Key Off / Dead Battery / TCCM Repeat Failure

Released 8/17/2016
Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs

Released 8/17/2016
No Crank / Start Then Immediate Stall / SES MIL / Service 4WD / Relay Clicking / Rearview Camera Inop / DTC (Inspect Ignition 1 voltage)

Released 8/11/2016
Back Up Alarm Inoperative And Needs To Be Connected During PDI

Released 8/3/2016
Blu-ray/CD/DVD player inoperative

Released 6/23/2016
Cluster DIC Display Dims Or Fades With High Temperature (Normal Operation)

Released 5/6/2016
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 5/2/2016
Dome Lamps Flash/Flicker On and Off when Operating Brake Pedal or Turn Signal

Released 4/14/2016
Instrument Panel Cluster (IPC) Warning Lamps And/Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing)

Released 4/14/2016
Service ABS / TCS / Power Steering and/or Suspension Message DTC U0077 U0121 U0126 U0131 U0139 U0151 U0401 U0415 U0428 (Circuit 5986 High Resistance)

Released 4/11/2016
Customer Satisfaction - Upfitter Auxiliary Switches

Released 4/11/2016
Radio HVAC IPC Blank Out When Operating A Snow Plow

Released 4/5/2016
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen / Display Blank/ Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 3/24/2016
Click Rattle Or Squeak Noise From Dash Area

Released 3/10/2016
Diagnostic Tip - Outside Temperature Will Not Update

Released 3/3/2016
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 2/28/2016
Service Update for Inventory and Customer Vehicles - Underhood Electrical Center (UEC) Missing Fuses and Relays - Expires with Base Warranty

Released 2/1/2016
Diagnostic Tip - Ambient Temperature Display / Information (Topology)

Released 1/13/2016
Radio HVAC IPC Blank Out When Operating A Snow Plow

Released 11/12/2015
Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs

Released 11/12/2015
Information on Available BCM Calibrations to Restore Bulb Outage Detection on Vehicles Produced by a Second Stage Manufacturer (Upfitter), Turn Signals Flash Fast after Factory Box Removed

Released 11/9/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
Drivers Power or Memory Seat and/or Power Adjustable Pedals Inoperative (Inspect For Poor Terminal Tension)

Released 10/31/2015
GM of Canada OnStar Cellular Communication Upgrade

Released 10/31/2015
Firm Garage Shifts, Start Up Clunk, DTC P16F3 (Reprogram TCM)

Released 10/31/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 10/31/2015
Check Trailer Wiring Message and/or Service Trailer Brake With DTC C1114

Released 10/31/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 10/31/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
Diagnostic Tip - Front Shock Electrical Connector Terminal Removal

Released 10/31/2015
Radio Back Lighting Stays On After Key Off / Dead Battery / TCCM Repeat Failure

Released 10/31/2015
Navigation Estimated Time of Arrival Incorrect/Inaccurate

Released 10/31/2015
Diagnostic Tip: EL-51578 MOST Bus Diagnostic Tool Kit

Released 10/31/2015
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 10/31/2015
Information for Fleet Vehicles - Ignition Key, Fob and Key Rings Configuration

Released 10/31/2015
Service Engine Soon Indicator Lamp Dimly Lit While Engine Is Running

Released 10/31/2015
Analog Gauges Inoperative and/or Cluster Display at Startup or Cluster Display/Analog Gauges/Backlighting Inoperative Intermittently, Speedometer Analog Gauge Operates in Opposite Direction

Released 10/31/2015
Malfunction Indicator Lamp (MIL) On, Poor Transmission Shift Performance/Quality

Released 10/31/2015
Headlight Performance (BCM Calibration and Bulbs)

Released 10/31/2015
Customer Satisfaction - Upfitter Auxiliary Switches

Released 10/31/2015
Chime Volume Too Loud

Released 9/5/2015
Dome Lamps Flash/Flicker On and Off when Operating Brake Pedal or Turn Signal

Released 8/8/2015
Engineering Information - One or More Key Transmitter(s) Inoperative or Lost Memory

Released 8/1/2015
Diagnostic Tip - Service Trailer Brake Message With DTC C1115 C1116 C1117 Or C1118

Released 7/18/2015
Engineering Information - One or More Key Transmitter(s) Inoperative or Lost Memory

Released 7/4/2015
Diagnostic Tip - Security Light On Intermittently / No Crank/No Start Or Start Stall And Keyless Access Vehicles May Display No Remote/Fob Detected

Released 6/27/2015
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 6/27/2015
Service Update for Inventory and Customer Vehicles - Underhood Electrical Center (UEC) Missing Fuses and Relays - Expires with Base Warranty

Released 6/20/2015
Driver Outside Wide Load Mirror Turn Signal Too Bright

Released 6/1/2015
Service Update for Inventory and Customer Vehicles - 'Peek In' Odometer Display Incorrect - Expires with Base Warranty

Released 5/23/2015
SES Traction Control lamp on and Engine Runs Rough with DTC P0300

Released 5/12/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 5/12/2015
Drivers Safety Alert Seat Cushion Discomfort (Haptic Motor Position)

Released 5/12/2015
Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs

Released 5/12/2015
Drivers Power Or Memory Seat And/Or Power Adjustable Pedals Inoperative (Inspect For Poor Terminal Tension)

Released 5/12/2015
Headlamps Inoperative After Switching To Snow Plow Lights (GM Upfitter 116)

Released 5/2/2015
Service Air Bag Message Displayed in Driver Information Center (DIC), DTC B0014, B0021 or B001E Set with Symptom Code :04 or 0D

Released 5/2/2015
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 4/11/2015
Customer Satisfaction - OnStar Module Battery Drain

Released 4/4/2015
Intermittent Clicking/Rubbing Noise when Side Door Glass is Moving Up or Down at Cold Temperatures

Released 4/4/2015
Diagnostic Tip - Proper Battery Draw Procedure Prior To Condemning IPC

Released 3/28/2015
No Crank or Start Then Immediate Stall (Inspect Circuit 5199 Under Driver Sill Plate)

Released 3/28/2015
Aftermarket ALDL or DLC Interface Devices Causing Multiple Issues

Released 3/28/2015
Back Up Alarm Inoperative And Needs To Be Connected During PDI

Released 3/14/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 3/7/2015
Diagnostic Tip for BCM DTC B101D SYM F0 Set with No Other Symptoms

Released 1/1/2015
Emission Recall - IMPCO Automotive - Incorrect Engine Control Module (ECM) Calibration

Released 1/1/2015
Radio Does Not Mute Enough When OnStar Turn-By-Turn Navigation Directions Are Announced (Increase Volume Setting or Request Soft Mute Feature Change Through OnStar Customer Service)

Released 1/1/2015
Poor FM Radio Reception

Released 11/1/2014
Power Driver Seat Inoperative, Power Outside Mirror Inoperative

Released 10/22/2014
Disabling Auto Door Locks

Released 9/25/2014
Installation Of Electrical Aftermarket Accessories (Battery Ignition And Ground Connections)

Released 9/25/2014
Engine Stays Running After Ignition Key Turned Off

Released 8/19/2014
CHMSL Wiring For Aftermarket Bed Cap Topper

Released 8/11/2014
Instrument Panel Cluster (IPC) Warning Lamps And/Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing)

Released 8/8/2014
Concerns Or Questions Regarding The Installation Of Dealer Installed Accessories

Released 8/7/2014
Check Trailer Wiring Message and/or Service Trailer Brake With DTC C1114

Released 8/4/2014
Remote Start Inoperative / Power Liftgate Inoperative And/Or DTC P2537

Released 7/25/2014
EZ Lower Tailgate Opens Too Quickly / Additional Effort To Close

Released 7/25/2014
Unwanted Grade Braking, Low Power, and/or Transmission Busy Shifting

Released 7/22/2014
Product Safety - Fuse Block Retention

Released 7/17/2014
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 U0028 U0029 U1548 U1549 U154A

Released 7/17/2014
Accessory Power Outlet and Trailer Lighting Fuse Replacement - Use GLC Labor Operation 5430130 Fuse Replacement

Released 7/14/2014
Powertrain and Various Electrical/Electronic Control Issues

Released 6/26/2014
Instrument Panel Cluster (IPC) Warning Lamps And/Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing)

Released 6/20/2014
F/CMVSS Noncompliance - Base Radio Lock Up

Released 6/19/2014
Radio Reprogramming Using Techline/Service Programming System (SPS) - Ensuring Correct Vehicle Selection

Released 6/9/2014
Front Radio Display Or Rear Video Screen Blank - Flickers - Distorted - Black Or No Image

Released 6/6/2014
Changing Outside Rearview Mirrors

Released 6/3/2014
DTCs P0601 P0603 P0604 P062F or P1621 (Stored In The TCM)

Released 5/16/2014
DTC Symptom Byte Documentation

Released 4/7/2014
5th Wheel Or Camper Wiring Harness Location

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 8/23/2011
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 8/23/2011
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 8/23/2011
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 8/23/2011
Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as Outlined Below)

Released 11/8/2017
Special Coverage - Diesel Emission Fluid Tank Reservoir

Released 8/29/2017
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 8/16/2017
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 5/25/2017
Black Smoke On Cold Start

Released 5/12/2017
Exhaust Smell in Cabin, Reduced Engine Power, Whistling and/or Hissing Type Noise Heard Underhood During Acceleration, or Service Engine Soon (SES) Light On, DTCs P0299 and/or P2263 Set

Released 1/12/2017
Catalytic Converter Break-In Information to Prevent DTCs P0420 And/Or P0430

Released 12/23/2016
Rough Idle and/or Lack of Power on Acceleration after Cold Start - Possible Characteristic

Released 12/21/2016
Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared Message Displayed on DIC, DTC P2463 May Be Set

Released 12/19/2016
Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System Driver Information Center Messages

Released 12/19/2016
Information on Diesel Exhaust Fluid (DEF) Filling Instructions, Frozen Tank Status and General Information

Released 12/12/2016
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 11/17/2016
Special Coverage Adjustment - Diesel Emission Fluid Tank Reservoir

Released 10/28/2016
Diagnostic Tip - Diesel Exhaust Fluid System Contamination

Released 9/27/2016
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 8/15/2016
Low Oil Pressure Message/Light - Inspect Valve Lifter Oil Filter

Released 8/1/2016
Information on Diesel Exhaust Fluid (DEF)

Released 6/28/2016
A New Way to Look at NOx Sensor Readings and Exhaust Temperature During a DPF Regeneration or a Reductant Fluid Quality Test

Released 5/27/2016
Emergency Vehicle Reduced Power

Released 4/27/2016
Black Smoke On Cold Start

Released 4/12/2016
Customer Satisfaction - Emergency Vehicle Reduced Power

Released 3/4/2016
Engine Runs With Intermittent Crank No Start With P0011 Or P00C6 May be Current Or Set In History

Released 3/3/2016
Diagnostic Tip - Exhaust Fluid Quality Poor Message Difficult To Clear

Released 2/2/2016
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 1/29/2016
DTCs P0088 And P128E, After Fuel System Or Engine Repair

Released 12/14/2015
Diagnostic Tip - Exhaust Fluid Low - Exhaust Fluid Empty - Exhaust Fluid Range and Service Exhaust Fluid Messages Difficult To Reset - Including Cold Weather Operation

Released 10/31/2015
SES Lamp P0171 P0174

Released 10/31/2015
Product Safety - Overheated Exhaust Components

Released 10/31/2015
Diagnostic Tip - Exhaust Fluid Quality Poor Message Difficult To Clear

Released 9/5/2015
Malfunction Indicator Lamp (MIL) Illuminated with DTCs P24C4, P2493, P2495 and P06A3

Released 6/27/2015
2015 Chevrolet Silverado and GMC Sierra 6.6L Duramax Engine Control Module Parts Restriction Has Ended

Released 6/1/2015
Exhaust Fluid Quality Poor Message Displayed, Reductant Fluid Quality Test Status will Pass, Time Out, Fail or Interrupt

Released 6/1/2015
Information on Incorrect Service Part Number on ECM Label

Released 6/1/2015
Additional Diagnostics For DTC P0420 And Or P24A0

Released 4/11/2015
Malfunction Indicator Lamp (MIL) Illuminated, Fuel Tank Hard to Fill, DTCs P0442, P0446, P0455 or P0449 Set

Released 3/28/2015
E92 ECM PQC Restriction on Part Number 12662034 has ended.

Released 9/23/2014
PQC Part Restriction - E92 ECM Restriction Part Number 12662034

Released 9/19/2014
PQC Part Restriction - E92 ECM Restriction Part Number 1266203

Released 9/12/2014
PQC Part Restriction - E92 ECM Restriction Part Number 12656993 / 12662034

Released 8/21/2014
2015 Chevrolet Silverado and GMC Sierra 6.6L Duramax Engine Control Module Parts Restriction

Released 8/20/2014
Service Update for Inventory and Customer Vehicles - Reprogram Engine Control Module - Expires with Base Warranty

Released 8/18/2014
Additional Diagnostics For DTC P0420 And Or P24A0

Released 8/15/2014
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 7/14/2014
PQC Part Restriction - E92 ECM Restriction Part Number 12656993 / 12662034

Released 7/14/2014
Powertrain and Various Electrical/Electronic Control Issues

Released 6/3/2014
DTCs P0601 P0603 P0604 P062F or P1621 (Stored In The TCM)

Released 5/14/2014
Catalytic Converter Break-In Information To Prevent DTCs P0420 And/Or P0430

Released 2/5/2014
Cold Engine Tick Noise That May Last Up To 50 Seconds

Released 1/19/2012
Information on Removing Seized Exhaust Temperature Sensors

Released 11/2/2011
Engineering Information (EI) Process

Released 9/30/2016
Vibration During Active Fuel Management V4 Mode Operation 1200 – 1400 Engine RPM

Released 4/27/2016
Black Smoke On Cold Start

Released 3/23/2016
Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared Message Displayed on DIC, DTC P2463 May Be Set

Released 2/26/2016
Black Smoke On Cold Start

Released 2/8/2016
Diagnostic Tip - Diesel Exhaust Fluid System Contamination

Released 11/19/2015
Customer Satisfaction - Exhaust Heat Shield Missing

Released 10/31/2015
Diesel Oxidation Converter Part Restriction

Released 9/5/2015
Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System Driver Information Center Messages

Released 7/25/2015
SES Lamp P0420

Released 7/18/2015
SES Lamp P0420

Released 6/20/2015
Diagnostic Tip - Exhaust Fluid Low - Exhaust Fluid Empty - Exhaust Fluid Range and Service Exhaust Fluid Messages Difficult To Reset - Including Cold Weather Operation

Released 5/2/2015
Information on Diesel Exhaust Fluid (DEF) Filling Instructions at Delivery to the Customer

Released 10/22/2014
Vibration During Active Fuel Management V4 Mode Operation 1200 – 1400 Engine RPM

Released 10/6/2014
Vibration During Active Fuel Management V4 Mode Operation 1200 – 1400 Engine RPM

Released 9/29/2014
Diesel Oxidation Converter Part Restriction

Released 8/28/2014
Information on Diesel Exhaust Fluid (DEF) Filling Instructions, Frozen Tank Status and General Information

Released 8/18/2014
Additional Diagnostics For DTC P0420 And Or P24A0

Released 8/15/2014
Exhaust Fluid Low - Exhaust Fluid Empty - Exhaust Fluid Range and Service Exhaust Fluid Messages Difficult To Reset - Including Cold Weather Operation

Released 8/13/2014
Exhaust Fluid Quality Poor Message Difficult To Clear

Released 5/14/2014
Catalytic Converter Break-In Information To Prevent DTCs P0420 And/Or P0430

Released 2/5/2014
Cold Engine Tick Noise That May Last Up To 50 Seconds

Released 12/24/2011
Exhaust Leak or Vibration/Rattle Noise at Approximately 900 RPM, Fuel Smell, White Smoke, Oily Substance on Exhaust Downpipe

Released 2/8/2018
Ticking Rattle Or Buzz Noise Heard The Best In The Passenger Compartment

Released 2/5/2018
Safety Recall - Fuel Tank Expansion Into Driveline

Released 11/13/2017
Malfunction Indicator Lamp Illuminated (MIL) - DTC P2635 and/or P018B Set In High Ambient Temperatures

Released 10/16/2017
Ticking Rattle Or Buzz Noise Heard The Best In The Passenger Compartment

Released 8/16/2017
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 7/25/2017
Information on How to Prevent Inadvertent Vehicle Starting from Key Fob or OnStar Mobile Application

Released 7/18/2017
Stalling - Hesitation - Lack Of Performance P018B And/Or P2635 Setting In High Ambient Temperatures

Released 7/12/2017
Diagnostic Information for DTC P2635 with P018B

Released 6/20/2017
Fuel Leak, Fuel Smell/Odor, Rubbing/Grinding/Clanking/Hitting/Banging/Popping/Thumping Noise from Under Vehicle, Fuel Gauge Reading Inaccurate

Released 5/25/2017
Black Smoke On Cold Start

Released 4/5/2017
Extended Crank Cold With DI (Direct Injected) Engines

Released 3/20/2017
Ticking Rattle Or Buzz Noise Heard The Best In The Passenger Compartment

Released 2/20/2017
Customer Satisfaction Program - Vehicles with Key Codes Improperly Handled by Third Party

Released 2/1/2017
Normal Characteristic - Bump Feel Or Clunk Noise After A Stop

Released 1/12/2017
Normal Characteristic - Hard or Unable to Rotate Ignition Key from the Off Position

Released 1/1/2017
Exhaust Leak or Vibration/Rattle Noise at Approximately 900 RPM, Fuel Smell, White Smoke, Oily Substance on Exhaust Downpipe

Released 12/12/2016
No Crank / Start Then Immediate Stall / SES MIL / Service 4WD / Relay Clicking / Rearview Camera Inop / DTC (Inspect Ignition 1 voltage)

Released 11/23/2016
Engineering Information - Vehicle Crank with No Start or Stalling with DTC P0011 and/or P00C6 Set

Released 11/3/2016
Information on Diesel Fuel Additives

Released 11/2/2016
Customer Satisfaction Program - Vehicles with Key Codes Improperly Handled by Third Party

Released 10/5/2016
Information for Fleet Vehicles - Ignition Key, Fob and Key Rings Configuration

Released 9/27/2016
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 9/19/2016
Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Parts Center

Released 8/17/2016
No Crank / Start Then Immediate Stall / SES MIL / Service 4WD / Relay Clicking / Rearview Camera Inop / DTC (Inspect Ignition 1 voltage)

Released 8/9/2016
Information for Fleet Vehicles - Ignition Key, Fob and Key Rings Configuration

Released 7/12/2016
Diagnostic Tip - 6.6L Duramax Fuel System Contamination

Released 6/8/2016
Diagnostic Tip for Malfunction Indicator Light (MIL) Illuminated, DTC P0420 and P0430 Set

Released 5/2/2016
Duramax Diesel Hard Start, No Start, DTCs P0087, P0088, P0191, P128E or Injection Pump Replacement

Released 4/21/2016
Normal Characteristic - Bump Feel Or Clunk Noise After A Stop

Released 4/1/2016
Information on Changes in Exhaust Tone for Active Fuel Management Engines When in Three or Four Cylinder Mode

Released 3/30/2016
Customer Satisfaction - Intake Air Heater (IAH) Fires

Released 3/29/2016
Alternative Gaseous Fuel Systems on BI-Fuel, CNG and LPG Equipped Vehicles

Released 3/21/2016
No Crank / Start Then Immediate Stall / SES MIL / Service 4WD / Relay Clicking / DTC (Inspect Ignition 1 voltage)

Released 3/9/2016
Engineering Information - Vehicle Crank with No Start or Stalling with DTC P0011 and/or P00C6 Set

Released 2/26/2016
Black Smoke On Cold Start

Released 2/26/2016
Diagnostic Tips For MIL Illumination - DTCs P013B and or P013D Set

Released 1/27/2016
Alternative Gaseous Fuel Systems on BI-Fuel, CNG and LPG Equipped Vehicles

Released 1/22/2016
Information For Servicing Fuel Injector Oil Ring Seal Replacement For Fuel Odor And/or Extended Cranking Condition

Released 11/25/2015
Normal Characteristic - Bump Feel Or Clunk Noise After A Stop

Released 11/23/2015
Product Safety - Ignition Lock Cylinder Binding

Released 11/4/2015
Disabling Or Removing CNG (Compressed Natural Gas) Fuel Systems

Released 10/31/2015
Information for Servicing Fuel Injector Oil Ring Seal Replacement For Fuel Odor And/or Extended Cranking Condition

Released 10/31/2015
Diesel Engine Hard Start When Hot

Released 10/31/2015
Exhaust Leak or Vibration/Rattle Noise at Approximately 900 RPM, Fuel Smell, White Smoke, Oily Substance on Exhaust Downpipe

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 10/31/2015
Information for Fleet Vehicles - Ignition Key, Fob and Key Rings Configuration

Released 10/31/2015
Normal Characteristic - Hard Or Unable To Rotate Ignition Key From The Off Position

Released 10/31/2015
Fuel Gauge Fluctuation in Park or Neutral

Released 9/5/2015
Fuel Odor, Fuel Leaks and/or Hard Start

Released 8/15/2015
Service Update for Inventory and Customer Vehicles - Glow Plug Control Module Software - Expires with Base Warranty

Released 6/13/2015
Duramax Diesel Hard Start No Start P0087 P0088 P0191 P128E Or Injection Pump Replacement

Released 6/6/2015
Engine Runs With Intermittent Crank No Start With P0011 Or P00C6 May be Current Or Set In History

Released 6/1/2015
Information for Fleet Vehicles - Ignition Key, Fob and Key Rings Configuration

Released 6/1/2015
Shift Lever Contacts Ignition Key

Released 5/23/2015
SES Traction Control lamp on and Engine Runs Rough with DTC P0300

Released 4/4/2015
Intermittent Crank No Start With DTC P1682

Released 3/28/2015
No Crank or Start Then Immediate Stall (Inspect Circuit 5199 Under Driver Sill Plate)

Released 3/28/2015
Product Safety - Fuel Vent Line Clamp Improper Torque

Released 3/14/2015
Diagnostic Tips for Malfunction Indicator Lamp (MIL) Intermittently Illuminated, DTCs P013B, P013D, P167E, P0171 or P0174 Set

Released 3/14/2015
6.6L Duramax Fuel Injection Pump Part Restriction Has Ended

Released 11/13/2014
6.6L Duramax Fuel Injection Pump Part Restriction

Released 11/6/2014
Information For Servicing Fuel Injector Replacement and/or Fuel Injector Oil Ring Seal Replacement

Released 8/7/2014
Duramax Diesel Hard Start No Start P0087 P0088 P0191 P128E Or Injection Pump Replacement

Released 7/17/2014
Product Safety - Diesel Fuel Transfer Pump Tube Nut Torque

Released 7/17/2014
Product Safety - Diesel Fuel Transfer Pump Tube Nut Torque

Released 7/17/2014
Intermittent No Start, Security Lamp Illuminated, DTCs B3935 and B2955 Set

Released 7/16/2014
Duramax Diesel Glow Plugs Difficult to Install Due to Carbon Buildup - New Glow Plug Bore Reamer Available

Released 6/19/2014
Diagnostic Tip - 2010 through 2015 6.6L Duramax Fuel System Contamination Identification

Released 5/14/2014
Catalytic Converter Break-In Information To Prevent DTCs P0420 And/Or P0430

Released 1/19/2012
Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Parts Center

Released 10/2/2017
Diagnostic Tip - Outside Temperature Will Not Update / Inaccurate / Poor Hvac Performance

Released 7/25/2017
Warm Air Exhausting from Driver and/or Passenger Front Seat Back into 2nd Row Seating Area Causing Occupant Discomfort

Released 11/28/2016
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 10/10/2016
Diagnostic Tip - Outside Temperature Will Not Update Or Inaccurate

Released 3/18/2016
Normal Characteristic - Unwanted A/C Compressor Operation After Being Turned Off

Released 12/5/2015
Air Conditioning Odor (Install Evaporator Core Dryer Kit and Apply Cooling Coil Coating)

Released 11/12/2015
Reduced Power Steering Assist Engine Stall IPC / Radio / HVAC Goes Blank Various DTCs

Released 10/31/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 8/15/2015
Various HVAC Issues (Reprogram K33 HVAC Control Module)

Released 6/27/2015
Diagnostic Tips - Front Heated Seats (RPO KB6)

Released 5/30/2015
Warm Air Exhausting from Driver and/or Passenger Front Seat Back into 2nd Row Seating Area Causing Occupant Discomfort

Released 5/12/2015
Diagnostic Tips Ambient Temperature Display / Information (Topology)

Released 4/18/2015
Possible Blank Radio Display And/Or DTC U150F Stored in the Radio/HVAC Controls

Released 3/14/2015
Normal Characteristic - Unwanted A/C Compressor Operation After Being Turn Off

Released 3/14/2015
Various HVAC Issues (Reprogram K33 HVAC Control Module)

Released 11/12/2014
Blower Motor Is Inoperative At Startup

Released 11/2/2011
Engineering Information (EI) Process

Released 10/13/2011
Eliminating Unwanted Odors in Vehicles

Released 3/6/2018
Information on Vibration Analysis and Diagnostic

Released 3/5/2018
Elevated Idle/ PTO/ High Idle Are All Different Options

Released 2/20/2018
P06DD Setting With Original Oil pump Or A Replacement oil Pump

Released 2/2/2018
Do Not Swap Modules in Vehicles With Global Electrical Systems

Released 1/5/2018
Information on Vibration Analysis and Diagnostic

Released 12/12/2017
Engine Misfire/Tick Noise. Malfunction Indicator Lamp (MIL) Illuminated with DTC P0300 Set

Released 11/29/2017
Shake Or Shudder On Acceleration

Released 10/20/2017
PQC 2015-2018 8L45 8L90 Automatic Transmission Park Actuator Rod Restriction

Released 9/26/2017
Gen5 Oil Consumption

Released 8/31/2017
Information on CJ-4 or CK-4 Diesel Engine Oil

Released 8/29/2017
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 8/16/2017
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 8/10/2017
Stalling Shudder and/or Hard shifting Into 1st Gear Or Reverse Vibration On launch (With Excessive Crankshaft End Play)

Released 8/3/2017
Concern Of An Engine Thermostat Tick Noise And/Or Running Hot

Released 7/20/2017
Stalling Shudder And/or Hard shifting Into 1st Gear Or Reverse Vibration On launch (With Excessive Crankshaft End Play)

Released 7/14/2017
Click or Tick Noise on 3-4 Shift

Released 7/10/2017
Gen5 Oil Consumption

Released 6/19/2017
Diagnostic Tips for Engine Vibration

Released 6/15/2017
Coolant Loss And/Or Coolant Odor

Released 6/8/2017
Rough Idle in Drive

Released 5/19/2017
Gen5 Oil Consumption

Released 5/18/2017
SES Lamp P050D P0300 Setting On A Cold Start

Released 5/11/2017
Speedometer Indicates Lower Mph/Speeds Than Vehicle Is Actually Traveling (e.g. 5 mph when traveling 50 mph)

Released 5/10/2017
Slip Or Shudder During A Launch In First Second Third Or Fourth Gears Delayed Engagement Into Drive Clunk Or Bump During The 1-2 Shift

Released 5/5/2017
White, Milky or Cloudy Appearance of Front Differential Fluid

Released 3/24/2017
Normal Characteristic - Sag Or Hesitation On Acceleration

Released 3/15/2017
Information on Vibration Analysis and Diagnostic

Released 2/22/2017
Faint High Pitched Whine Noise In Auto 4 Wheel Drive

Released 2/14/2017
Service 4 Wheel Drive Message After Flat/Dinghy Towing

Released 2/14/2017
Diagnostic tip for 4 Wheel Drive Inoperative with no DTCs.

Released 2/14/2017
Delayed Shift Out of 4 Wheel Drive Low

Released 1/27/2017
PQC Restriction Allison LCT1000 Transmission Valve Body RPO MW7 Has Ended

Released 1/20/2017
Harsh 1-2, Harsh 3-1 Decel Downshift, Harsh Downshifts Under Heavy Throttle, AFM Transition and Step In Clunk During Downshift

Released 1/11/2017
Low Volt Gauge Reading After Cold Start

Released 12/23/2016
SES Light, Misfire, DTC P0300, and/or a Chirp, Squeak, Squeal, Or Tick Noise - Potential Valvetrain Concern

Released 12/23/2016
Rough Idle and/or Lack of Power on Acceleration after Cold Start - Possible Characteristic

Released 12/21/2016
Shake or Shudder on Acceleration

Released 12/20/2016
Information On Adding A Snowplow To A Light Duty Pick Up and/Or SUV

Released 12/19/2016
New Tool Availability - EN-48974 - EGR Cooler Pressure Tester Adapter Set to Diagnose Duramax Diesel Engine EGR Cooler Engine Coolant Leaks into Combustion Chamber

Released 12/19/2016
Information on Diesel Engine Ticking Noise

Released 12/12/2016
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 12/6/2016
Delayed Engagement After Sitting With Engine Off - Clutch Slow to Fill

Released 11/23/2016
Engineering Information - Vehicle Crank with No Start or Stalling with DTC P0011 and/or P00C6 Set

Released 11/18/2016
Transmission Flare Between 1st and 2nd Gear Upon First Start Up of the Day Under Light Throttle

Released 11/16/2016
2-3 Upshift Slip or Flare

Released 11/16/2016
Information on Higher Than Expected Oil Consumption

Released 11/16/2016
Shake Or Shudder On Acceleration

Released 11/15/2016
8L45 8L90 Diagnostic Tips for Harsh Shifts

Released 11/8/2016
8L45 8L90 Diagnostic Tips for Harsh Shifts

Released 10/20/2016
SES MIL / Service Suspension System / ABS MIL / No Crank / Misfire / A/C Inoperative (Inspect Engine Harness Chaffing At Vacuum Pump Pulley)

Released 10/19/2016
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH

Released 10/13/2016
Engine Misfire/Tick Noise. Malfunction Indicator Lamp (MIL) Illuminated with DTC P0300 Set

Released 10/3/2016
2010 through 2016 6.6L Duramax Diesel Engine (RPO Codes LGH and LML) Part Number 12638502 PQC Restriction Has Ended

Released 10/3/2016
SES Lamp Setting A P0106 And/or P0506

Released 9/27/2016
Diagnostic tips for SES light with DTCs P2635, U0074 and/or U18A2 set

Released 9/23/2016
2010 through 2016 6.6L Duramax Diesel Engine (RPO Codes LGH and LML) Part Number 12638502 PQC Restriction Has Ended

Released 9/19/2016
Speedometer Indicates Lower Mph/Speeds Than Vehicle Is Actually Traveling (e.g. 5 mph when traveling 50 mph)

Released 9/7/2016
Speedometer inaccurate reads 5 mph when traveling 50 mph

Released 8/29/2016
Service 4wd Message With DTC C0392 or C0396 Stored In TCCM

Released 8/15/2016
Low Oil Pressure Message/Light - Inspect Valve Lifter Oil Filter

Released 8/15/2016
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH

Released 8/5/2016
Gen5 Oil Consumption

Released 7/28/2016
Engine Misfire, Ticking/Knocking Noise, No Compression due to Piston Damage, Malfunction Indicator Lamp (MIL) Illuminated

Released 6/28/2016
Delayed Engagement After Sitting With Engine Off

Released 6/28/2016
Diagnostic Tip for Harsh Shifts After Mileage Accumulation Without Previous Transmission Repairs and/or Calibration Updates

Released 6/23/2016
Information on Vibration Analysis and Diagnostic

Released 6/22/2016
Filling the Cooling System, Diagnosing and Replacing Leaking Cylinder Head Gaskets on a 6.6 Duramax Diesel

Released 6/13/2016
Engineering Information - Bang or Loud Noise with No Forward (Drive) or Reverse Ranges

Released 6/13/2016
Code P06DD No Or Low Oil Pressure

Released 6/3/2016
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH

Released 5/12/2016
Engineering Information - Shake or Shudder on Light Throttle Acceleration or Steady State Cruise

Released 5/1/2016
Illuminated MIL. DTC P16F3 May Be Set As An Active Or History Code In The TCM

Released 4/27/2016
Engine Misfire/Tick Noise, Malfunction Indicator Lamp (MIL) On, DTC P0300 Set

Released 4/27/2016
No Reverse, No Second After Upper Valve Body Replacement

Released 4/27/2016
SES Light P0521 P06DD And Low Oil Pressure

Released 4/22/2016
Crank No Start - Inspect for Sheared Cam Pin

Released 4/14/2016
Instrument Panel Cluster (IPC) Warning Lamps And/Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing)

Released 4/5/2016
Engine Misfire/Tick Noise, Malfunction Indicator Lamp (MIL) On, DTC P0300 Set

Released 4/5/2016
Engine Knock on Cold Start

Released 3/30/2016
Service 4wd Message C0398

Released 3/18/2016
Snap, Pop, Click, Tick or Clunk Noise on a Launch

Released 3/8/2016
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH

Released 3/4/2016
Engine Runs With Intermittent Crank No Start With P0011 Or P00C6 May be Current Or Set In History

Released 3/4/2016
Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts

Released 2/23/2016
Stalling Shudder And/or Hard shifting Into 1st Gear Or Reverse Vibration On launch (With Excessive Crankshaft End Play)

Released 2/22/2016
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation Between 30 And 65 MPH

Released 2/18/2016
Allison LCT1000 Check Engine Light Stuck In One Gear Flashing PRNDL P0751 P0752 P0756 P0757 P0761 P0762 P0842 P0843 P0847 P0848 P0872 P0873 P0877 or P0878 May Be Set

Released 2/17/2016
Whine Noise Operating In 4wd

Released 2/15/2016
Engine Runs With Intermittent Crank No Start With P0011 Or P00C6 May be Current Or Set In History

Released 2/15/2016
PQC Restriction Allison LCT1000 Transmission Valve Body RPO MW7

Released 2/12/2016
SI Diagnostics Determines the Engine Repair requires Crankshaft Replacement

Released 2/12/2016
Engineering Information - Bang or Loud Noise with No Forward (Drive) or Reverse Ranges

Released 2/8/2016
Faint High Pitched Whine Noise In Auto 4 Wheel Drive

Released 2/4/2016
Engineering Information - Bang or Loud Noise with No Forward (Drive) or Reverse Ranges

Released 2/2/2016
Diagnostic Tip for No Fourth, Fifth and Sixth Gears and/or Malfunction indicator Lamp Illuminated with DTC P0796

Released 2/2/2016
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 1/22/2016
Service 4wd Message C0398

Released 1/20/2016
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation

Released 1/19/2016
Information On How To Remove Most Stuck Lifters when completing 15-06-01-002A

Released 1/12/2016
Transmission Noise On Engine Start-Up

Released 1/11/2016
Clearing C0398 from Transfer Case Control Module

Released 12/15/2015
Supplement To Service Information For Duramax Diesel Head Gasket Replacement

Released 12/11/2015
Recovery Process from a Controller Reprogramming Interruption

Released 11/30/2015
Oil Pressure Gauge Fluctuation After Startup and Over 3700 RPM

Released 11/20/2015
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission Has Ended

Released 11/19/2015
Customer Satisfaction - Exhaust Heat Shield Missing

Released 11/6/2015
Diagnostic Tips for Reduced Acceleration at Low Speed and/or Transmission Slipping from a Launch, DTC P0751 Set

Released 10/31/2015
Shake Or Shudder On Acceleration Excessive Engine RPM Fluctuation

Released 10/31/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 10/31/2015
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission

Released 10/31/2015
Engine and Automatic Transmission/Transaxle Identification

Released 10/31/2015
PQC Part Restriction T87 TCM 8L45 8L90 8 Speed And LCT1000 Allison Automatic Transmissions has ended

Released 10/31/2015
Customer Satisfaction - Engine Cylinder Head Gasket Leak

Released 10/31/2015
Firm Garage Shifts, Start Up Clunk, DTC P16F3 (Reprogram TCM)

Released 10/31/2015
Unable To Achieve Preload On Pinion Bearings 9.5/9.76 Inch Rear Axles

Released 10/31/2015
Customer Satisfaction - Engine Harness Chafing on EGR Stud

Released 10/31/2015
Diesel Engine Hard Start When Hot

Released 10/31/2015
Service Update for Inventory Vehicles Only - 8-Speed Transmission Harsh Shift - Expires December 31, 2015

Released 10/31/2015
SI Diagnostics determines the engine repair requires crankshaft replacement

Released 10/31/2015
Service 4 Wheel Drive Message With DTCs C0398 Or C0326 Setting When Vehicle Operated Below 32 Degrees (0 C)

Released 10/31/2015
Engine Misfire SES Lamp P0300 AFM Cylinders

Released 10/31/2015
Faint High Pitched Whine Noise In Auto 4 Wheel Drive

Released 10/31/2015
Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts

Released 10/31/2015
PQC Part Restriction T87 TCM 8L90 8 Speed And LCT1000 Allison Automatic Transmissions

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Incorrect Top Speed Calibration - Expires with Base Warranty

Released 10/31/2015
Diagnostic Tips for DTC P0741: Torque Converter Clutch Stuck Off

Released 10/31/2015
Harsh Garage Shifts, Firm Upshifts and/or Downshift Bumps

Released 10/31/2015
Engineering Information - Lower Oil Pan Leak

Released 10/31/2015
Diagnostic Tips for Reduced Acceleration at Low Speed and/or Transmission Slipping from a Launch, DTC P0751 Set

Released 10/31/2015
Allison LCT1000 Clunk When Shifting Into Or Out Of Park or On Start Up In Park

Released 10/31/2015
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission

Released 10/31/2015
Rough Idle

Released 10/31/2015
Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts

Released 10/31/2015
Information on Vibration Analysis and Diagnostic

Released 10/31/2015
Engine Misfire SES Lamp P0300 AFM Cylinders

Released 10/31/2015
Service Engine Soon Indicator Lamp Dimly Lit While Engine Is Running

Released 10/31/2015
Malfunction Indicator Lamp (MIL) On, Poor Transmission Shift Performance/Quality

Released 10/31/2015
White, Milky or Cloudy Appearance of Front Differential Fluid

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Missing Engine Valve Stem Oil Seal - Expires with Base Warranty

Released 10/31/2015
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission

Released 10/31/2015
Diagnostic Tips for DTC P2818: Transmission Control Solenoid Valve 8 Stuck On

Released 10/31/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 10/31/2015
Information on Vibration Analysis and Diagnostic

Released 10/31/2015
Low Oil Pressure After an Oil and Filter Change

Released 10/31/2015
Engine Misfire SES Lamp P0300 AFM Cylinders

Released 10/31/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 9/5/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 9/5/2015
MIL Illuminated with Firm Shifts, Shudder, Engine RPM Flare and DTCs P0606, P16F3 or P2818

Released 8/29/2015
2010 through 2016 6.6L Duramax Diesel Engine (RPO Codes LGH and LML) Part Number 12638502 PQC Restriction

Released 8/22/2015
Fluid Leak From Front End Of Allison Transmission

Released 8/22/2015
8L90 Repeat Harsh Shift After Latest TCM Calibration And Relearning The Shift Adapts

Released 8/15/2015
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission

Released 8/15/2015
Service Update for Inventory and Customer Vehicles - Glow Plug Control Module Software - Expires with Base Warranty

Released 8/8/2015
Low Oil Pressure After An Oil And Filter Change

Released 8/8/2015
Engineering Information - No Forward or Reverse, Transmission Slips or Low Line Pressure

Released 8/8/2015
Service Update for Inventory and Customer Vehicles - Torque Converter Machining Spill - Expires with Base Warranty

Released 8/1/2015
PQC Part Restriction T87 TCM 8L45 8L90 8 Speed And LCT1000 Allison Automatic Transmissions

Released 8/1/2015
Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines Using GDS 2

Released 8/1/2015
Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts

Released 7/25/2015
SES Light P0521 P06DD And Low Oil Pressure

Released 7/18/2015
Information - Service Parts Transfer Case Bolt Hole And Case Appearance

Released 7/18/2015
Engine Misfire/Tick Noise, Malfunction Indicator Lamp (MIL) On, DTC P0300 Set

Released 7/18/2015
Service Update for Inventory and Customer Vehicles - Harsh Shift When Starting in Low Temperatures - Expires with Base Warranty

Released 7/18/2015
Low Oil Pressure Message/Light - Inspect Valve Lifter Oil Filter

Released 7/18/2015
PQC Restriction Allison LCT1000 Transmission Valve Body RPO MW7 With RPO AVF

Released 6/27/2015
Service 4wd Message With DTC C0392 Or C0396 Stored In TCCM

Released 6/27/2015
Service Update for Inventory and Customer Vehicles - Torque Converter Machining Spill - Expires with Base Warranty

Released 6/27/2015
2015 Chevrolet Silverado and GMC Sierra 6.6L Duramax Engine Control Module Parts Restriction Has Ended

Released 6/27/2015
Diagnostic Tips for DTC P0741: Torque Converter Clutch Stuck Off

Released 6/20/2015
Illuminated MIL. DTC P16F3 May Be Set As An Active Or History Code In The

Released 6/20/2015
Engine Misfire/Tick Noise, Malfunction Indicator Lamp (MIL) On, DTC P0300 Set

Released 6/6/2015
Engineering Information - Fluid Leak from Front End of Allison Transmission

Released 6/1/2015
Diagnostic Tips for Reduced Acceleration at Low Speed and/or Transmission Slipping from a Launch, DTC P0751 Set

Released 6/1/2015
Higher Than Expected Oil Consumption at 8600 GVW and Above

Released 6/1/2015
Engineering Information — Fluid Leak from Front End of Allison Transmission

Released 6/1/2015
Customer Satisfaction - No Start or MIL Indicator Power Reduction Mode

Released 6/1/2015
Engineering Information — Engine Oil Leak at Lifter Oil Manifold Assembly (LOMA) Seal

Released 5/30/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 5/30/2015
Illuminated MIL. DTC P16F3 May Be Set As An Active Or History Code In The TCM

Released 5/30/2015
Service Update for Inventory and Customer Vehicles - Torque Converter Clutch (TCC) Shudder - Expires with Base Warranty

Released 5/16/2015
Diagnostic Tips for DTC P0741: Torque Converter Clutch Stuck Off

Released 5/16/2015
Repeat P0521 And P06DD

Released 5/16/2015
Transmission Noise On Engine Start-Up

Released 5/12/2015
Engineering Information - No Forward or Reverse, Transmission Slips or Low Line Pressure

Released 5/12/2015
Information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts

Released 5/12/2015
Information on Higher Than Expected Oil Consumption

Released 5/12/2015
Supplement To Service Information For Duramax Diesel Head Gasket Replacement

Released 5/2/2015
PQC Transmission Exchange 8L90 8 Speed Automatic Transmission

Released 4/25/2015
PQC 2015 Allison A1000 Automatic Transmission Assembly Restriction

Released 4/18/2015
PQC 2014 To 2015 Allison A1000 Automatic Transmission Assembly Restriction

Released 4/11/2015
Low Oil Pressure Message/Light - Inspect Valve Lifter Oil Filter

Released 4/11/2015
PQC Part Restriction T87 TCM 8L90 8 Speed And LCT1000 Allison Automatic Transmissions

Released 4/11/2015
Service Update for Inventory and Customer Vehicles - TCM Harness Routing - Expires with Base Warranty

Released 4/11/2015
8L90 Repeat Harsh Shift After Latest TCM Calibration And Relearning The Shift Adapts

Released 4/4/2015
Engine Misfire SES Lamp P0300 AFM Cylinders

Released 3/29/2015
Snap, Pop, Click, Tick or Clunk Noise on a Launch

Released 3/28/2015
Illuminated MIL. DTC P16F3 May Be Set As An Active Or History Code In The TCM

Released 3/28/2015
E92 ECM PQC Restriction on Part Number 12662034 has ended.

Released 3/7/2015
Illuminated MIL DTC P16F3 May Be Set As An Active Or History Code In The TCM

Released 3/7/2015
Engine Misfire SES Lamp P0300 AFM Cylinders

Released 11/13/2014
Whine Noise Operating In 4wd

Released 11/5/2014
Diagnostic Tip: Important Information Needed When Calling TAC for Diagnostic Help on Vibration Complaints

Released 10/17/2014
Repeat Service 4 Wheel Drive Message With DTCs C0398 C038D C0397

Released 10/15/2014
Shudder During Drive Engagement

Released 10/2/2014
Concern of engine oil dipstick indicating an overfill

Released 9/22/2014
PQC Restriction Allison LCT1000 Transmission Valve Body RPO MW7

Released 9/16/2014
Rough Idle

Released 8/26/2014
Information on Identifying Duramax Diesel Overpower Engine Breakdown/Non-Function Due to Aftermarket Power-Up Devices vs Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain Components, DTC P003A or P111D Set

Released 8/21/2014
Service 4 Wheel Drive Message After Flat/Dinghy Towing

Released 8/19/2014
Engine Runs With Intermittent Crank No Start With P0011 Or P00C6 May be Current Or Set In History

Released 8/18/2014
Service 4 Wheel Drive Message After Flat/Dinghy Towing

Released 8/15/2014
Duramax Intermittent High Idle Or Elevated Idle Descriptions

Released 8/14/2014
PQC 2014 to 2015 Allison A1000 Automatic Transmission Assembly Restriction

Released 8/11/2014
Instrument Panel Cluster (IPC) Warning Lamps And/Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing)

Released 7/24/2014
PQC Part Restriction T87 TCM 8L90 8 Speed And LCT1000 (MW7) Allison Automatic Transmissions

Released 7/17/2014
Alleged Cylinders Out Of Round

Released 6/19/2014
Delayed Or No Drive And Or Delayed Or No Reverse With DTCs Range Inhibit

Released 6/16/2014
Rough Idle Or Vibration In Drive

Released 6/10/2014
Delayed Or No Drive And Or Delayed Or No Reverse With DTCs Range Inhibit

Released 6/3/2014
DTCs P0601 P0603 P0604 P062F or P1621 (Stored In The TCM)

Released 5/14/2014
Catalytic Converter Break-In Information To Prevent DTCs P0420 And/Or P0430

Released 2/26/2014
Poor Finish On Camshafts

Released 2/21/2014
2015 Chevrolet Silverado and GMC Sierra 6.6L Duramax Engine Control Module Parts Restriction

Released 2/5/2014
Cold Engine Tick Noise That May Last Up To 50 Seconds

Released 1/22/2014
Diagnostic Aids For Driveline Noise Or Vibration

Released 1/22/2014
Service 4 Wheel Drive Message C0569 After Transfer Case Related Repairs

Released 12/12/2013
PQC Restriction Allison A1000 Transmission Valve Body RPO MW7

Released 3/27/2012
Information on Diesel Engine Ticking Noise

Released 11/2/2011
Engineering Information (EI) Process

Released 10/24/2011
Use of Surface Conditioning Disks When Cleaning Engine Gasket Sealing Surfaces and/or Reused Engine Parts

Released 2/21/2018
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 2/5/2018
Safety Recall - Fuel Tank Expansion Into Driveline

Released 11/8/2017
Special Coverage - Diesel Emission Fluid Tank Reservoir

Released 9/28/2017
Diagnostic Tip: OnStar Vehicles with B101D and Symptom Codes

Released 7/28/2017
Product Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 7/10/2017
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 6/22/2017
Customer Satisfaction - OnStar System Inoperative - Chip Corruption

Released 2/20/2017
Customer Satisfaction Program - Vehicles with Key Codes Improperly Handled by Third Party

Released 11/17/2016
Special Coverage Adjustment - Diesel Emission Fluid Tank Reservoir

Released 11/2/2016
Customer Satisfaction Program - Vehicles with Key Codes Improperly Handled by Third Party

Released 10/3/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 9/15/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 9/9/2016
Safety Recall - Frontal Airbag and Pretensioner Non Deploy

Released 8/10/2016
Product Safety - Brake Pedal Pivot Nut/Bolt Loose

Released 5/27/2016
Emergency Vehicle Reduced Power

Released 4/18/2016
Customer Satisfaction - Tire Pressure Monitor Not Installed in Spare Tire

Released 4/11/2016
Customer Satisfaction - Upfitter Auxiliary Switches

Released 3/30/2016
Customer Satisfaction - Intake Air Heater (IAH) Fires

Released 3/24/2016
Product Safety - Brake Pedal Pivot Nut/Bolt Loose

Released 2/19/2016
Customer Satisfaction - Trailer Hitch Platform Welds

Released 11/23/2015
Product Safety - Ignition Lock Cylinder Binding

Released 11/19/2015
Customer Satisfaction - Exhaust Heat Shield Missing

Released 10/31/2015
Customer Satisfaction - Engine Harness Chafing on EGR Stud

Released 10/31/2015
Product Safety - Overheated Exhaust Components

Released 10/31/2015
Customer Satisfaction - OnStar Module Battery Drain

Released 10/31/2015
Customer Satisfaction - Upfitter Auxiliary Switches

Released 8/8/2015
Customer Satisfaction Program - Loss of GPS, OnStar and XM Antenna Functions

Released 8/8/2015
Service Update for Inventory and Customer Vehicles - Torque Converter Machining Spill - Expires with Base Warranty

Released 6/13/2015
Customer Satisfaction - Dealer Installed Rear Seat Entertainment System

Released 6/1/2015
Customer Satisfaction - No Start or MIL Indicator Power Reduction Mode

Released 3/28/2015
Customer Satisfaction - Heated Back Window Glass Structurally Weakened Due to Surface Flaw

Released 3/28/2015
Product Safety - Fuel Vent Line Clamp Improper Torque

Released 1/1/2015
Emission Recall - IMPCO Automotive - Incorrect Engine Control Module (ECM) Calibration

Released 12/5/2014
Product Safety - Inspect Power Steering Hoses

Released 8/26/2014
Product Safety - Incomplete Weld on Seat Hook Assembly

Released 8/21/2014
Product Safety - All Weather Floor Mats Used with Vinyl Floor

Released 8/20/2014
Service Update for Inventory and Customer Vehicles - Reprogram Engine Control Module - Expires with Base Warranty

Released 8/1/2014
Product Safety - Incomplete Weld on the Seat Hook Bracket Assembly

Released 7/22/2014
Product Safety - Fuse Block Retention

Released 7/17/2014
Product Safety - Diesel Fuel Transfer Pump Tube Nut Torque

Released 7/17/2014
Product Safety - Diesel Fuel Transfer Pump Tube Nut Torque

Released 6/20/2014
F/CMVSS Noncompliance - Base Radio Lock Up

Released 6/16/2014
Product Safety - Inspect Power Steering Hose Clamps

Released 8/29/2019
Revised Wheel Balancer Mounting Instructions (Heavy Duty Models Only)

Released 2/25/2019
Vibration at Highway Speeds

Released 3/6/2018
Information on Vibration Analysis and Diagnostic

Released 2/9/2018
Diagnostic Tip - Front Shock Terminal Removal

Released 2/9/2018
Diagnostic Tip - Rattle Squeak Clunk Thump Bump Noise From Front Suspension

Released 1/5/2018
Information on Vibration Analysis and Diagnostic

Released 12/8/2017
Clunking Noise from Rear of Vehicle (Retorque Leaf Spring Bolts)

Released 12/8/2017
Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)

Released 11/27/2017
Creak Click Pop Crack Type Noise From Front Suspension/Frame Area While Making Turns

Released 11/21/2017
Tire Sidewall Irregularities

Released 11/9/2017
Compatibility of K2xx 22” Accessory Wheels and Tires Through GM Accessories -- Use of Altered Vehicle Certification Label

Released 7/25/2017
Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)

Released 6/9/2017
Diagnostic Information to Determine if the Steering Gear OR Motor Kit Needs to be Replaced

Released 6/8/2017
Chrome Center Cap Coming Off Or Missing On Chrome Or Polished Aluminum Wheels

Released 6/1/2017
Tread Chipping and/or Chunking on Bridgestone Dueler H/T 684 II Tires

Released 5/9/2017
Various Vehicle Handling Concerns Suspension Noise Or Damaged Suspension Components Due To Vehicle Modifications

Released 5/1/2017
Revised Wheel Balancer Mounting Instructions (Heavy Duty Models Only)

Released 3/15/2017
Information on Vibration Analysis and Diagnostic

Released 2/1/2017
Diagnostic Tip - Rattle Squeak Clunk Thump Bump Noise From Front Suspension

Released 2/1/2017
Diagnostic Tip - Front Shock Terminal Removal

Released 1/5/2017
Front Suspension Squeak/Creak/Rumble/Rattle/Clunk/Thump/Click/Tick/Knock Type Noise Over Bumps

Released 12/14/2016
Creak Click Pop Crack Type Noise From Front Suspension/Frame Area While Making Turns

Released 8/26/2016
Service Update - Spare Wheel Missing

Released 8/16/2016
Various Vehicle Handling Concerns Suspension Noise Or Damaged Suspension Components Due To Vehicle Modifications

Released 7/19/2016
Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)

Released 6/23/2016
Information on Vibration Analysis and Diagnostic

Released 4/18/2016
Customer Satisfaction - Tire Pressure Monitor Not Installed in Spare Tire

Released 4/12/2016
Clunking Noise from Rear of Vehicle (Retorque Leaf Spring Bolts)

Released 4/11/2016
Diagnostic Tip - Front Shock Terminal Removal

Released 3/21/2016
Various Vehicle Handling Concerns Suspension Noise Or Damaged Suspension Components Due To Vehicle Modifications

Released 1/19/2016
Power Steering Noise or Fluid Leak from Power Steering Pump, Gear or High Pressure Hose During Extreme Low Temperature Conditions

Released 11/10/2015
Steering Wheel Vibration Or Customers Looking To Add Steering Stabilizer

Released 11/9/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
Tire Sidewall Irregularities

Released 10/31/2015
Inventory Update for Inventory and Customer Vehicles - Power Steering Hose Leak - Expires with Base Warranty

Released 10/31/2015
Steering Column Grind Pop Bind Shudder Noise and/or Feeling When Turning

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Steering Gear Assembly Replacement - Expires with Base Warranty

Released 10/31/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
Steering Column Grind Pop Bind Noise and/or Feeling When Turning

Released 10/31/2015
Diagnostic Tip - Front Shock Electrical Connector Terminal Removal

Released 10/31/2015
Information on Vibration Analysis and Diagnostic

Released 10/31/2015
Informational - MagneRide Rear Shocks Not Interchangeable Left To Right (Production Only)

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Power Steering Hose Leak - Expires with Base Warranty

Released 10/31/2015
Information on Vibration Analysis and Diagnostic

Released 10/31/2015
Clunking Noise from Rear of Vehicle (Retorque Leaf Spring Bolts)

Released 10/31/2015
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 8/22/2015
Vibration At Highway Speeds

Released 8/1/2015
Steering Column Grind Pop Bind Shudder Noise And/Or Feeling When Turning

Released 6/27/2015
Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)

Released 6/1/2015
Information on Dealer Snow Plow Prep Package for Non-Equipped Trucks

Released 6/1/2015
Revised Wheel Balancer Mounting Instructions (Heavy Duty Models Only)

Released 5/2/2015
Various Vehicle Handling Concerns Suspension Noise Or Damaged Suspension Components Due To Vehicle Modifications

Released 12/5/2014
Product Safety - Inspect Power Steering Hoses

Released 8/27/2014
Chrome Center Cap Coming Off Or Missing On Chrome Or Polished Aluminum Wheels

Released 8/18/2014
Diagnostic Tip - Missing Alignment Dowel Pin

Released 8/6/2014
Power Steering Noise or Fluid Leak from Power Steering Pump, Gear or High Pressure Hose During Extreme Low Temperature Conditions

Released 6/16/2014
Product Safety - Inspect Power Steering Hose Clamps

Released 2/6/2014
Information on Slight or Mild Tire Feathering and Recommended Practices (Normal Tire Wear Condition)

Released 2/6/2014
Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel)

Released 2/6/2014
Tire Slowly Goes Flat, Tire Air Loss, Low Tire Pressure Warning Light Illuminated, Aluminum Wheel Bead Seat Corrosion (Clean and Resurface Wheel Bead Seat)

Released 1/24/2014
Refinishing Aluminum Wheels

Released 1/22/2014
Diagnostic Aids For Driveline Noise Or Vibration

Released 1/4/2014
Proper Wheel Installation and Wheel Torque Techniques

Released 5/3/2012
Information on Tire Radial Force Variation (RFV)

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory

Released 12/3/2011
Information on Diagnosis and Replacement of Shock Absorber and Strut Due to Fluid Leak

Released 10/27/2011
Squeak Noise from Rear of Vehicle (Lubricate Rear Leaf Springs)

Released 2/1/2017
Diagnostic Tip - Front Shock Terminal Removal

Released 12/19/2016
New Tool Availability - EN-48974 - EGR Cooler Pressure Tester Adapter Set to Diagnose Duramax Diesel Engine EGR Cooler Engine Coolant Leaks into Combustion Chamber

Released 12/14/2016
Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information

Released 11/16/2016
Information on Paint Color Variation Available to Match Vehicles with Visibly Lighter Paint Color

Released 10/25/2016
Diagnostic Tip - USB Port Inoperative Using Multi Media Interface Tester (MIT)

Released 10/31/2015
Unable To Achieve Preload On Pinion Bearings 9.5/9.76 Inch Rear Axles

Released 10/31/2015
Information on Adding a Snowplow to a Light Duty Pick Up and/or SUV

Released 10/31/2015
Diagnostic Tip - USB Port Inoperative Using Multi Media Interface Tester (MIT)

Released 10/31/2015
Diagnostic Tip - Front Shock Electrical Connector Terminal Removal

Released 10/31/2015
Analog Gauges Inoperative at Startup or Cluster Display/Analog Gauges/Backlighting Inoperative Intermittently

Released 10/31/2015
Diagnostic Tip: EL-51578 MOST Bus Diagnostic Tool Kit

Released 10/31/2015
Information on Dealer Snow Plow Prep Package for Non-Equipped Trucks

Released 8/22/2015
Vibration At Highway Speeds

Released 6/13/2015
Diagnostic Tip: EL-51578 MOST Bus Diagnostic Tool Kit

Released 6/1/2015
Information on Dealer Snow Plow Prep Package for Non-Equipped Trucks

Released 12/5/2014
New Tool Availability - EN-48974 - EGR Cooler Pressure Tester Adapter Set to Diagnose Duramax Diesel Engine EGR Cooler Engine Coolant Leaks into Combustion Chamber

Released 12/5/2014
Information for Dealers on How to Submit a Product Information Report (PIR) (Canada Only)

Released 7/16/2014
Duramax Diesel Glow Plugs Difficult to Install Due to Carbon Buildup - New Glow Plug Bore Reamer Available

Released 7/8/2014
Procedure For Emailing Global Diagnostic System 2 (GDS2) Session Log To

Released 5/22/2014
Warranty Code Generated By EL-50313 Midtronics GR8 Battery Tester/Charger Required for Claim Processing On Labor Operation 4041510, 4041520 and 250 Mile/400 Km Labor Operation Restriction (North America ONLY)

Released 2/6/2014
Information on Slight or Mild Tire Feathering and Recommended Practices (Normal Tire Wear Condition)

Released 11/28/2011
2015 Silverado HD and Sierra HD New Model Features and Service Guide

Released 10/24/2011
Use of Surface Conditioning Disks When Cleaning Engine Gasket Sealing Surfaces and/or Reused Engine Parts

Released 10/22/2011
Information for Dealers/Technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only)

Released 11/9/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
RKE / Passive Entry And Start / No Audio / SWC / Touch Screen Rear Wiper And Rear Power Windows Inoperative / Dead Battery / Service Tire Pressure System DTC B3101 B144C C0710 C0544 U0028 U0029 U0077 U0126 U0151 U0415 U1548 U1549 U154A

Released 10/31/2015
Service Update for Inventory and Customer Vehicles - Body Harness Contact with Park Brake Bracket - Expires with Base Warranty

Released 1/13/2012
Properly Maintaining Vehicles in Dealer Inventory