Get Free 2014 CHEVROLET EXPRESS G4500 V8, 4.8L; OHV; 16V; SEFI; FFV TSBs

Released 3/5/2018
Fleet Key Option - Adding Keys / Converting

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

Released 2/1/2018
Noncompliance Recall - Vehicles Built Without Tire Pressure Monitoring System (TPMS) - USA Only

Released 12/11/2017
Engineering Information - Driver's Window Switch Intermittent Operation, Inoperative, Smoke or Melting

Released 11/20/2017
Diagnostic Tip- Information for U0140 or U0073 (BCM Appears Off Line On The High Speed Buss)

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

Released 7/21/2017
Information on Removing Protective Film Bumper Covers Upon Delivery of Vehicle (PDI)

Released 6/21/2017
Front Shock Mount Bracket Crack (Install Reinforcement)

Released 5/26/2017
Exterior Roof Panel Sag/Depression

Released 3/7/2017
Fleet Key Option - Adding Keys / Converting

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

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

Released 11/15/2016
Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent AIR BAG Indicator/Lamp Illuminated with DTC(s) B0012, B0013, B0015, B0016, B0019, B0020, B0022, B0023, B0026, B0033, B0040, B0042 or B0044 Set

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

Released 9/19/2016
Available Stop And Turn Lamp Options/Diagnostic Information

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

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

Released 6/30/2016
Brake Hydroboost Leaking Power Steering Fluid

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

Released 6/10/2016
Information on Removing Protective Film Bumper Covers Upon Delivery of Vehicle (PDI)

Released 5/27/2016
Emergency Vehicle Reduced Power

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

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 12/2/2015
FMVSS Noncompliance - Fuel Label Compliance

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
Alleged No Park or Vehicle Rolls in Park or Park Will Not Hold

Released 10/31/2015
Exterior Lighting Inoperative - Incorrect Upfitter BCM Connections

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 10/31/2015
Noise and/or Shake Felt While Driving

Released 10/31/2015
Information for No Start Due to Inoperative LPG Fuel Pump Resulting from Upfitter Modifications

Released 9/5/2015
Information on Removing Protective Film Bumper Covers Upon Delivery of Vehicle (PDI)

Released 9/5/2015
Tow/Haul Mode Inoperative

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

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

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

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

Released 6/27/2015
Front Shock Mount Bracket Crack (Install Reinforcement)

Released 6/20/2015
Diagnostic Tip - Unable to Change HVAC Mode Defrost Or Recirc Position

Released 6/1/2015
Customer Satisfaction - Torque Converter Clutch Wear

Released 6/1/2015
Reduced Engine Power with Service Engine Message Displayed and DTC P2263 Set

Released 6/1/2015
Insufficient Air Flow from Second and Third Row Roof Vents

Released 6/1/2015
Diagnostic Tip - Grind or Rattle Noise During a Left Turn or on a Bump

Released 6/1/2015
HVAC Vent and Floor Mode Selection Inoperative

Released 6/1/2015
Exterior Roof Panel Sag/Depression

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

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

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

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

Released 12/5/2014
Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System Driver Information Center Messages

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

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
Customer Satisfaction - Replace Front Suspension Torsion Bars

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

Released 7/16/2014
Information on Removing Protective Film Bumper Covers Upon Delivery of Vehicle (PDI)

Released 7/15/2014
Sliding Door Does Not Stay Open While Vehicle is on a Downslope and/or Sliding Door Closes Too Easily

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

Released 7/11/2014
Information Regarding A/C Service Valve Tethered Cap Requirements in the State of Idaho

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

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

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 2/1/2014
No Audio On Certain XM Radio Channels

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 1/4/2014
Loose Ground Terminal Repair and Proper Labor Code

Released 10/4/2013
Diagnostic Tip: Diagnosing Vehicles with OnStar DTC B101D-37

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 6/28/2013
Information for Engine Oils Used in 2014 Model Year Vehicles

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

Released 2/28/2012
MIL Illuminated, DTCs P0961, P0965, P0969, P2762 and Battery Has Been Relocated

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 11/2/2011
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 10/17/2011
Safety Belt Locking Conditions (Normal Operating Characteristics)

Released 10/13/2011
Eliminating Unwanted Odors in Vehicles

Released 9/23/2011
Missing OnStar Owner Kit Integration in Vehicle Owner Manual

Released 1/17/1997
Car and Truck Fix it Right the First Time Issues

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

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

Released 9/14/2016
Service StabiliTrak Message Displayed in DIC, StabiliTrak Indicator Light On, DTC C0455 and/or C0710 Set

Released 6/30/2016
Brake Hydroboost Leaking Power Steering Fluid

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

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

Released 1/25/2016
Service StabiliTrak Message Displayed in DIC, StabiliTrak Indicator Light On, DTC C0455 and/or C0710 Set

Released 10/31/2015
Diagnostic Tip - School Bus Brake Warning System RPO UJ1 Functional Test and Diagnostics

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 8/22/2015
Product Safety - Rear Brake Line Contact (Canada Only)

Released 3/28/2015
Special Coverage Adjustment - Inadequate Clearance of Fuel Fill Pipe Clamp to Brake Lines

Released 3/1/2015
Special Coverage Adjustment - Inadequate Clearance of Fuel Fill Pipe Clamp to Brake Lines

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 1/17/1997
Car and Truck Fix it Right the First Time Issues

Released 3/3/2016
Diesel Engine Cooling System Filling Procedure For Vehicles Equipped With Rear Heater

Released 8/8/2015
Diagnostic Tip - Engine Cooling System Fill Procedure For Vehicles Equipped With Rear Heater

Released 8/15/2014
Diesel Engine Cooling System Filling Procedure For Vehicles Equipped With Rear Heater - Diagnostic Tip

Released 12/11/2017
Engineering Information - Driver's Window Switch Intermittent Operation, Inoperative, Smoke or Melting

Released 11/20/2017
Diagnostic Tip- Information for U0140 or U0073 (BCM Appears Off Line On The High Speed Buss)

Released 10/19/2017
Door Switch

Released 10/16/2017
Engineering Information - Drivers Window Switch Intermittent Operation, Inoperative, Smoke or Melting

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

Released 5/24/2017
Adding Cruise Control (RPO K34)

Released 11/15/2016
Diagnostic Information for Supplemental Inflatable Restraint (SIR) System, Intermittent AIR BAG Indicator/Lamp Illuminated with DTC(s) B0012, B0013, B0015, B0016, B0019, B0020, B0022, B0023, B0026, B0033, B0040, B0042 or B0044 Set

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

Released 9/19/2016
Available Stop And Turn Lamp Options/Diagnostic Information

Released 10/31/2015
Exterior Lighting Inoperative - Incorrect Upfitter BCM Connections

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

Released 3/7/2015
Installation of Electrical Aftermarket Accessories-Battery, Ignition and Ground Feeds-Do Not Splice into Wiring Harness (Install Diode to Solenoid/Relay to Suppress Voltage Spikes)

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 8/26/2014
Clarification Of RAP Operation

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

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

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

Released 5/16/2014
DTC Symptom Byte Documentation

Released 2/1/2014
No Audio On Certain XM Radio Channels

Released 1/4/2014
Loose Ground Terminal Repair and Proper Labor Code

Released 10/5/2013
OnStar Will Not Power Up

Released 9/14/2013
OnStar Will Not Power Up

Released 2/28/2012
MIL Illuminated, DTCs P0961, P0965, P0969, P2762 and Battery Has Been Relocated

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

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

Released 1/17/1997
Car and Truck Fix it Right the First Time Issues

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

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 Diesel Exhaust Fluid (DEF) Filling Instructions, Frozen Tank Status and General Information

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

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
Diagnostic Tip - Exhaust Fluid Quality Poor Message Difficult To Clear

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
Additional Diagnostics For DTC P0420 And Or P24A0

Released 12/5/2014
Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System Driver Information Center Messages

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
Powertrain and Various Electrical/Electronic Control Issues

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

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

Released 1/17/1997
Car and Truck Fix it Right the First Time Issues

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

Released 12/22/2015
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 10/31/2015
Diesel Oxidation Converter Part Restriction

Released 10/31/2015
Diesel Oxidation Converter Part Restriction Has Ended

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 12/5/2014
Information on Exhaust Fluid Range, Exhaust Fluid Quality Poor, Service Exhaust Fluid System or Service Emission System Driver Information Center Messages

Released 9/29/2014
Diesel Oxidation Converter Part Restriction

Released 9/18/2014
Diesel Oxidation Converter Part Restriction

Released 9/9/2014
Diesel Oxidation Converter Part Restriction

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 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 3/7/2017
Fleet Key Option - Adding Keys / Converting

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

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

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 6/28/2016
Compressed Natural Gas (CNG) Fuel Line Inspection and Replacement Part Identification

Released 4/18/2016
Compressed Natural Gas (CNG) Valve Outgassing at Extreme Cold Temperatures

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

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

Released 12/2/2015
FMVSS Noncompliance - Fuel Label Compliance

Released 10/31/2015
Product Safety - Compressed Natural Gas (CNG) High Pressure Regulator

Released 10/31/2015
Product Safety - Compressed Natural Gas (CNG) High Pressure Regulator

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

Released 10/31/2015
Product Safety - Compressed Natural Gas (CNG) High Pressure Regulator

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 10/31/2015
Special Coverage Adjustment - Fuel Pump Module Battery Terminal

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
Information for No Start Due to Inoperative LPG Fuel Pump Resulting from Upfitter Modifications

Released 6/20/2015
Special Coverage Adjustment - Indirect Fuel Injector Replacement

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

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

Released 6/1/2015
Information for No Start Due to Inoperative LPG Fuel Pump Resulting from Upfitter Modifications

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

Released 3/1/2015
Special Coverage Adjustment - Inadequate Clearance of Fuel Fill Pipe Clamp to Brake Lines

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

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

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

Released 6/1/2015
HVAC Vent and Floor Mode Selection Inoperative

Released 7/11/2014
Information Regarding A/C Service Valve Tethered Cap Requirements in the State of Idaho

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

Released 10/13/2011
Eliminating Unwanted Odors in Vehicles

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

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 12/19/2016
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 11/16/2016
Information on Higher Than Expected Oil Consumption

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

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

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

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

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

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

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

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
Crank No Start - Inspect for Sheared Cam Pin

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

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

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

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

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
Special Coverage Adjustment - Torque Converter Clutch Wear

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 9/5/2015
Tow/Haul Mode Inoperative

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

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

Released 6/1/2015
Customer Satisfaction - Torque Converter Clutch Wear

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
Diagnostic Tip - Grind or Rattle Noise During a Left Turn or on a Bump

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

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

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 3/14/2015
SES Lamp P0521 Setting In Cold Ambient Temperatures

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

Released 7/17/2014
Alleged Cylinders Out Of Round

Released 10/4/2013
Diagnostic Tip: Diagnosing Vehicles with OnStar DTC B101D-37

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 1/17/1997
Car and Truck Fix it Right the First Time Issues

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 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 10/17/2016
Customer Satisfaction Program - Vehicles Built Without Tire Pressure Monitoring System (TPMS) (Canada Only)

Released 5/27/2016
Emergency Vehicle Reduced Power

Released 5/12/2016
FMVSS Noncompliance - Vehicles Built Without Tire Pressure Monitoring System (TPMS) - USA Only

Released 10/31/2015
Product Safety - Compressed Natural Gas (CNG) High Pressure Regulator

Released 10/31/2015
Product Safety - Compressed Natural Gas (CNG) High Pressure Regulator

Released 10/31/2015
Product Safety - Compressed Natural Gas (CNG) High Pressure Regulator

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 10/31/2015
Special Coverage Adjustment - Torque Converter Clutch Wear

Released 10/31/2015
Product Safety - Chassis Electronic Control Module Internal Contamination

Released 10/31/2015
Special Coverage Adjustment - Fuel Pump Module Battery Terminal

Released 8/22/2015
Product Safety - Rear Brake Line Contact (Canada Only)

Released 6/20/2015
Special Coverage Adjustment - Indirect Fuel Injector Replacement

Released 6/1/2015
Customer Satisfaction - Torque Converter Clutch Wear

Released 3/28/2015
Special Coverage Adjustment - Inadequate Clearance of Fuel Fill Pipe Clamp to Brake Lines

Released 3/1/2015
Special Coverage Adjustment - Inadequate Clearance of Fuel Fill Pipe Clamp to Brake Lines

Released 8/21/2014
Customer Satisfaction - Replace Front Suspension Torsion Bars

Released 6/21/2017
Front Shock Mount Bracket Crack (Install Reinforcement)

Released 10/17/2016
Customer Satisfaction Program - Vehicles Built Without Tire Pressure Monitoring System (TPMS) (Canada Only)

Released 5/12/2016
FMVSS Noncompliance - Vehicles Built Without Tire Pressure Monitoring System (TPMS) - USA Only

Released 4/25/2016
Front Suspension Too Low, Excessive Tire Wear, Unable to Perform Alignment

Released 3/31/2016
Noise from Rear Leaf Spring Under Acceleration and High Loads (Replace Rear Leaf Spring Shackle)

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

Released 10/31/2015
Front Shock Mount Bracket Crack (Install Reinforcement)

Released 10/31/2015
Noise and/or Shake Felt While Driving

Released 6/27/2015
Front Shock Mount Bracket Crack (Install Reinforcement)

Released 8/21/2014
Customer Satisfaction - Replace Front Suspension Torsion Bars

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 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 1/24/2014
Refinishing Aluminum Wheels

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 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 6/7/2013
IPC Odometer Programming Method Quick Reference 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)