2021 Chevrolet Express Technical Service Bulletins

642 technical service bulletins (TSBs) are on record for the 2021 Chevrolet Express. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10233838Mar 16, 2023Engine cooling, Fuel system. This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the DEF system.
• 10233831Mar 16, 2023Engine cooling. This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
• 10233844Mar 15, 2023Engine cooling. This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10233833Mar 14, 2023Engine cooling. This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning Exhaust Filter Keep Driving Until Message is Cleared messages Displayed on DIC, DTC P2463 May Be Set.
• 10233358Mar 10, 2023Equipment, Electrical system. This service bulletin provides information on AGM batteries that require less frequent charging in storage.
• 10233338Mar 8, 2023Wheels, Tires. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10232711Mar 2, 2023Transmission and drivetrain. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear.
• 10232469Feb 27, 2023Equipment. This Warranty Administration bulletin provides policy information on Causal Part requirements for transactions submitted to GM for payment.
• 10232287Feb 21, 2023Equipment. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
• 10232288Feb 20, 2023Equipment. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 10232283Feb 17, 2023Body and structure, Other or unknown, Visibility (wipers, defrost, mirrors). This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
• 10232143Feb 17, 2023Equipment. This warranty administration bulletin provides policy information for variable diagnostic time allowances on select labor operations (U.S. Only).
• 10232275Feb 16, 2023Transmission and drivetrain. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
• 10232136Feb 15, 2023Exterior lighting. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
• 10232811Feb 10, 2023Equipment. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
• 10232073Feb 7, 2023Transmission and drivetrain, Electrical system. This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did not clear or appear to reset on the next engine start.
• 10231893Feb 1, 2023Electrical system, Engine cooling. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
• 10231519Jan 31, 2023Wheels, Tires, Equipment. This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
• 10231518Jan 31, 2023Equipment, Wheels, Tires. This service bulletin provides information for accurate tire pressures that ensure the safe handling and appropriate ride characteristics of GM cars and trucks.
• 10231496Jan 26, 2023Electrical system, Steering, Engine cooling, Brakes. This technical bulletin provides repair information to correct a customer concern of no start, hard start with belt squeal, belt break, loss of power steering and/or power brake assist.
• 10231302Jan 20, 2023Equipment. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10231374Jan 17, 2023Equipment. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with RPO ATH and AVJ.
• 10230612Jan 13, 2023Electrical system. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
• 10230609Jan 12, 2023Transmission and drivetrain. This service bulletin provides a repair procedure to correct a customer concern of Delayed and/or Harsh Engagement of Transmission Shift After Vehicle Sitting with Engine Off.
• 10230608Jan 12, 2023Transmission and drivetrain. This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.
• 10230603Jan 6, 2023Engine cooling, Electrical system. This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance Report to identify vehicles in dealer inventory that require attention.
• 10230601Jan 6, 2023Electrical system, Transmission and drivetrain. This service bulletin provides information for the technician that may experience a condition when after performing a DTC Clear/Reset on the TCM during diagnosis or after completion of a transmission repair or replacement, the DTCs did not clear or appear to reset on the next engine start.
• 10228912Dec 23, 2022Wheels. This service bulletin provides information on Dealer Installed LPO Wheel Installation and Return Process.
• 10228906Dec 21, 2022Equipment. This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
• 10230697Dec 15, 2022Visibility (wipers, defrost, mirrors). This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
• 10228888Dec 14, 2022Engine cooling. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
• 10228886Dec 14, 2022Engine cooling. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 10228863Dec 13, 2022Transmission and drivetrain, Engine cooling. This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
• 10228192Dec 7, 2022Equipment. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
• 10230683Dec 5, 2022Electrical system, Equipment. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
• 10230682Dec 2, 2022Equipment, Electrical system. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
• 10227401Nov 30, 2022Equipment, Electrical system. This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone not Charging or USB Receptacle Inoperative.
• 10227398Nov 30, 2022Transmission and drivetrain. This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.
• 10227674Nov 29, 2022Wheels, Tires. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
• 10227372Nov 23, 2022Fuel system. This informational bulletin provides information for dealers/technicians on Illuminated Check Engine Light, Possible Water in the Fuel, Evaporative Codes Set, Fuel Tank Evaporative Vent Valve Leak.
• 10227241Nov 18, 2022Transmission and drivetrain, Engine cooling. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 10227225Nov 14, 2022Body and structure. This informational bulletin advised the dealer to remove the protective film from the bumpers and how to clean/remove the adhesive.
• 10227058Nov 9, 2022Transmission and drivetrain. This information advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF causing the customers concern.
• 10227056Nov 9, 2022Engine cooling. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.
• 10227052Nov 7, 2022Body and structure. This preliminary informational bulletin provides frame coating repair information to correct a customer concern of wax coating on frame peeling, metal shows corrosion/rusting (U.S. and Canada Only).
• 10225615Oct 19, 2022Electrical system. This service bulletin provides information on Module Harvesting.
• 10226382Oct 18, 2022Brakes. This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable and will need to be replaced if the brake pedal moves or applies on its own at a full turn.
• 10224820Oct 7, 2022Equipment. This service bulletin provides information for dealers on how to submit a product information report (PIR) (Canada Only).
• 10224831Oct 4, 2022Body and structure. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
• 10226356Oct 3, 2022Transmission and drivetrain. This Preliminary information communicates diagnostic aid to help isolate possible repeat thermal by-pass valve concern.

← All problems reported for the 2021 Chevrolet Express