2021 Chevrolet Express technical service bulletins
643 technical service bulletins and manufacturer communications cover the 2021 Chevrolet Express, including one warranty extension.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- Unknown or other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- This PI communicates the proper part numbers for transmission connectors and internal harness to prevent...
- Unknown or other
- Unknown or other
- PI to help diagnose A/C concern
- Unknown or other
- Pi created to provide GM dealers with information on gathering information for projection issue
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
- This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax...
- This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered...
- Unknown or other
- The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
- Emission Recall
- New Vehicle Monitoring Programs Section in IVH
- This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer...
- Unknown or other
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
- Amendments to the Song-Beverly Act (SBA) California warranty law provides vehicle owners with an...
- Unknown or other
- This service bulletin provides information on Tire Sidewall Irregularities.
- This service bulletin provides information on replacing the intake manifold when the engine is replaced...
- Unknown or other
- This bulletin advises the tech to inspect deeper into what may be to main
- The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle...
- This service bulletin provides information for the technicians to use a Customer Concern Verification...
- This service bulletin provides information to dealership personnel for new vehicles with less than 1,000...
- Unknown or other
- This warranty administration bulletin provides policy information on vehicles outside of a California...
- Steering
- This service bulletin provides a procedure to replace the FPDCM if found to
- This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to...
- This warranty administration bulletin provides policy information for GM courtesy transportation and...
- This service bulletin provides information on the proper Reflective High Temperature Heat and/or...
- The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential...
- Unknown or other
- This bulletin advises the technician to flush the cooling system multiple times if oil has been found in...
- This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be...
- This service bulletin provides information for dealers/technicians on Service Programming System (SPS)...
- This service bulletin provides a procedure on how to clean and resurface aluminum wheel bead seats for...
- This service bulletin provides information to diagnose batteries that have set for a long period of time...
- This service bulletin provides frame coating repair information to correct a customer concern of wax...
- This warranty administration bulletin provides information regarding the field action courtesy...
- Power train
- This service bulletin provides information on Wheel Alignment Specifications, Requirements and...
- This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer...
- Unknown or other
- This informational bulletin provides a procedure on how to remove the paint stain that may present itself...
- This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the...
- This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage...
- This service bulletin provides information on proper use of floor mats.
- This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the...
- This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil...
- This warranty administration service bulletin provides information about GM Accessories
- This service bulletin provides information on the Transport Mode Feature, also known as Logistics mode,...
- This service bulletin provides information to inform dealership personnel about Law Enforcement and...
- This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and...
- This informational bulletin provides a guide on how to diagnose and test for vibrations utilizing the...
- This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using...
- This warranty administration bulletin provides policy information on the requirements for 12V battery...
- This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
- This warranty administration bulletin provide policy information for variable diagnostic time allowances...
- Unknown or other
- Electrical system
- This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- This service bulletin provides diagnostic/repair information to correct a customer concern of Cellphone...
- This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter...
- This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified...
- Electrical system
- Electrical system
- Electrical system
- Unknown or other
- This service bulletin provides information on All hazmat parts being returned to the Warranty Parts Center...
- Power train
- This service bulletin provides information on key code security rules and information on GM keycode...
- This service bulletin provides guidelines and diagnostic/repair information to technicians regarding...
- Unknown or other
- This Warranty Administration bulletin provides information on the Global Warranty Management (GWM)...
- This bulletin provides information on Warranty Administration – Required Operating Procedures
- This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline...
- This service bulletin provides information on Concerns or Questions Regarding Installation of Dealer...
- This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission...
- This service bulletin provides information on some vehicles that may rock or move slightly forward or...
- Power train
- This warranty administration bulletin provides policy information, proper labor operation selection and...
- Power train
- Unknown or other
- Power train
- This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
- This service bulletin provides information for dealers/technicians on When and How to Submit a Field...
- This technical bulletin provides a procedure for the techs to replace the forward check ball and separator...
- Unknown or other
- Unknown or other
- Engine
- The bulletin provides direction on how to locate the Temporary Service Part (TSP) form in GlobalConnect.
- Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles
- This bulletin provides a procedure to replace the FPDCM if found to
- This service bulletin provides information to dealership personnel on diagnosis and replacement of shock...
- This service bulletin provides graphics, information and guidelines for engine component wear to assist...
- This service bulletin provides information on AGM batteries that require less frequent charging in storage.
- Electrical system
- Power train
- This service bulletin explains how to identify possible DEF system contamination.
- This service bulletin provides information on a guide to help reduce repeat visits for the same customer...
- This informational bulletin provides information on Diesel Exhaust Fluid (DEF) and the proper use of the...
- This service bulletin provides a diagnostic aid procedure on how to perform a quick test to check if the...
- This service bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
- This informational bulletin advises the technician that the engine and related parts will be debited if...
- This service bulletin advises about the possible issues that may occur when using a scotch brite pad or...
- This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER...
- This bulletin provides information on Engine Concerns that could result from lack of scheduled...
- This service bulletin provides service information for customer concerns of an in-tank fuel pump whining...
- This Warranty Administration service bulletin provides information for dealers/Service advisors on when...
- This informational bulletin explains why more DEF is being used in diesel engines due to new emission...
- This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a...
- This service bulletin describes the U.S. Dealer Special Tool Loan Program process.
- This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C...
- GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities
- This informational bulletin explains the difference in AFM and DFM engines and what is and is not...
- This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted...
- This service bulletin explains the difference in oil filters for gas engines with new oil pump control...
- This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is...
- This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves...
- This technical bulletin provides repair information to correct a customer concern of Check Engine Lamp...
- This service bulletin provides information for replacement parts traceability (RPT) process to aid in...
- This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as...
- This service bulletin provides information for the Global Warranty Management (GWM) Warranty Parts Center...
- This service bulletin provides information for engine oil life monitor operation calculation.
- This warranty administration bulletin provides policy information requirements applicable to key fob...
- This Warranty Administration bulletin provides information on customer vehicles concern results in a...
- This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- This warranty administration bulletin provides policy information to cover GMs policy on performing GM...
- This Warranty Administration bulletin provides retail and wholesale service personnel with the...
- This service bulletin provides information for cleaning brake dust off of aluminum or chrome wheels.
- This service bulletin provides information on GM Canada New Vehicle Tire Warranty Program for Original...
- This service bulletin includes information on Interior Cleaning
- This service bulletin provides technicians with information to help identify the differences between what...
- This service bulletin provides information for dealers/technicians on Over The Air (OTA) and In Market...
- This service bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).
- Condition in which the transmission Control Valve Body Ball Check Valves can wear prematurely resulting in...
- This bulletin updates the position of General Motors on refinishing aluminum wheels
- This bulletin provides information for electrical ground repairs using new General Motors replacement...
- Structure
- This service bulletin provides information on submitting quality Photos of Various Vehicle Concerns to the...
- This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake...
- This bulletin advises the tech to inspect deeper into what may be the main
- Fuel system, gasoline
- Power train
- This service bulletin provides information on the cold start control system in DI engines to reduce cold...
- Customer Satisfaction Program
- This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required...
- This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.
- This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus...
- This service bulletin advises the technician that the possible
- Structure
- This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License...
- This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- Equipment: other: owners/service/other manual
- Electrical system
- This service bulletin advises the technician of a new routing for the ABS sensor harness if the part was...
- This service bulletin provides service /diagnostic information to aid with a Transmission Harsh 1-2 Shift...
- Electrical system
- Suspension
- This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with...
- This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty...
- This information bulletin advises the technician the difference between a welch cap leak and the output...
- This technical bulletin provides service information to correct a customer concern of Excessive Brake...
- This service bulletin provides repair information to correct a customer concern of OnStar Inoperative...
- This service bulletin provides information on General Motors Dealership Critical Equipment Requirements...
- This service bulletin provides information about the Hunter wheel Road Force balancers that should be...
- This service bulletin provides information for dealers on how to submit a product information report (PIR)...
- This bulletin provides information on Warranty Administration – Required Operating Procedures
- This informational bulletin provides information for the IPC odometer programming method quick reference...
- This technical bulletin provides a procedure for the techs to replace the forward check ball and separator...
- This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.
- This technical bulletin provides information and a solution to a condition of Brake Pedal Moves or Self...
- This Warranty Administration bulletin provides information on the proper use of the labor operation 0600014.
- This informational bulletin advised the technician that the engine and related parts will be debited if...
- Engine
- This service bulletin provides technicians with updated information to help identify the differences...
- This informational bulletin provides information on Clean Exhaust Filter See Owner Manual Now or Cleaning...
- This service bulletin provides information on availability of Diesel Fuel additives.
- This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
- This service bulletin provides information for dealers/technicians on accessory all-weather floor liners...
- This service bulletin provides information on availability for a seat belt extender.
- Equipment: other: owners/service/other manual
- This service bulletin provides information for dealers/technicians on Over the Air (OTA) and In Market...
- This service bulletin provides information on Paintless Dent Repair Process.
- This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter...
- Tires: sidewall
- This service bulletin provides information to dealership personnel on automatic transmission shift and...
- This service bulletin provides information for dealers/technicians on When and How to Submit a Field...
- This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are...
- Electrical system: integrated trailer brake control
- Emission Recall
- This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full...
- This service bulletin provides information for the technician that may experience a condition when after...
- This service bulletin provides service information on new torque specification and installation procedure...
- This informational bulletin provides information on Clean Exhaust Filter See Owners Manual Now or Cleaning...
- This service bulletin provides information for after installation of a replacement upper valve body, the...
- This Warranty Administration bulletin provides policy information on Causal Part requirements for...
- This warranty administration bulletin provides policy information for variable diagnostic time allowances...
- This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water...
- This service bulletin provides information for U.S. dealers ONLY to refer to the Battery Maintenance...
- This service bulletin provides information for accurate tire pressures that ensure the safe handling and...
- This service bulletin provides information for tire pressure monitoring (TPM) system concerns.
- This technical bulletin provides repair information to correct a customer concern of no start, hard start...
- This service bulletin provides a repair procedure to correct a customer concern of Delayed and/or Harsh...
- This service bulletin provides information on Dealer Installed LPO Wheel Installation and Return Process.
- Visibility: defroster/defogger/HVAC system: rear window: electrical heating element
- This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to...
- This informational bulletin provides information for dealers/technicians on Illuminated Check Engine...
- This informational bulletin advised the dealer to remove the protective film from the bumpers and how to...
- This information advises the technician the difference between a welch cap leak and the output seal of the...
- This service bulletin provides information on Module Harvesting.
- Power train
- This informational bulletin explains how the trans slip or flare can be a normal condition.
- This service bulletin provides information on Handling Requests for Modifications to Permanently...
- This service bulletin provides information on OEM and Remanufactured Engine and Automatic...
- This service bulletin provides the technician with additional information on fuels, fuel additives and...
- This informational bulletin explains how to identify possible DEF contamination.
- This informational bulletin advises the technician of possibly installing the incorrect 1-2-7-8-R clutch...
- This technical bulletin provides information on a possible bolt and guide pin that may be missing from the...
- This diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my...
- Power train
- This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter...
- This bulletin provides information on tools available to find an intake vacuum leak or exhaust leak to...
- This informational bulletin provides information on Light and Medium Duty Truck Product Identification and...
- This informational bulletin advises the technician to replace the TBV if the transmission has any type of...
- This informational bulletin provides you with contacts in event of the installation of Cruise control.
- This warranty admin bulletin covers information on Essential Tools that include Consumable Parts.
- Visibility: sun/moon roof assembly
- Wheels
- Fuel system, diesel
- This service bulletin provides repair information to correct a customer concern of Possible Crank No Start...
- This service bulletin provides policy information on warranty administration guidelines for multiple...
- This technical bulletin provides a procedure to repair a possible wiring harness repair if damaged by the...
- Prior to reinstallation of the outer dual rear wheels, ensure that the washers are removed and inspected...
- This informational bulletin provides information on a guide to help reduce repeat visits for the same...
- This informational bulletin provides information for dealers/technicians on Available ECM Calibration to...
- Electrical system
- This bulletin updates the position of General Motors on refinishing fully color painted aluminum wheels...
- Electrical system
- This service bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM)...
- This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty...
- This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter...
- Structure
- This information bulletin advised the tech of possible use of low fuel quality and the possible...
- This service bulletin provides information for dealers/technicians on Stone Chip/Membrane Damage, Broken...
- This technical bulletin provides a procedure to replace the turbocharger for vehicles with a condition of...
- This service bulletin provides service information for a DEF pump that is unable to build pressure after...
- Back over prevention: sensing system: camera
- This technical bulletin provides a procedure on how to properly identify if there is any aftermarket...
- This informational bulletin provides tips for showing a way to confirm if its a mechanical engine issue or...
- This technical bulletin provides a procedure to Tighten the Charge Air Cooler Duct Clamp to correct a...
- This informational bulletin explains how the SOOT readings went from grams to percentage
- The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as...
- Structure: body
- This service bulletin provides information for dealers/technicians and customers on steam/vapor coming...
- This service bulletin provides information for dealers/technicians on Tire/Wheel Characteristics...
- This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with...
- This service bulletin advises the technician on what to do if the DEF pump has been replaced and perform a...
- Equipment
- This warranty administration bulletin provides policy information on the requirements for battery testing...
- Emission Recall
- This informational bulletin provides information for dealers/technicians on Available ECM Calibration to...
- This service bulletin provides information for dealers/technicians on glass ultraviolet (UV) Ray...
- This service bulletin provides information on GM Accessories ? Dealer-Installed, Repaired or Replaced...
- Exterior lighting
- Service brakes, hydraulic
- This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to...
- Service Update Bulletin
- Electrical system
- This service bulletin provides diagnostic information for a customer concern of engine vibration.
- This informational bulletin advises the technician to verify the TCM is asleep before trying to repair the...
- This service bulletin provides information regarding Witness Marks from Panel Adjustments Made During...
- This warranty administration bulletin provides policy information requirements applicable to key fob...
- Back over prevention
- This warranty administration bulletin provides policy information requirements applicable to key fob...
- This technical bulletin provides a procedure to remove the tabs from the pre and post battery positive...
- This informational bulletin provides information on proper use of floor mats.
- This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full...
- Structure
- Customer Satisfaction Program (Revised Parts Table)
- Service update
- Customer Satisfaction Program
- This engineering informational bulletin is requesting information from technicians to perform the check...
- This informational bulletin advises the tech of a possible normal condition when the vehicle creeps...
- This informational bulletin advises the technician on what to do if the DEF pump has been replaced and...
- This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding...
- This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low...
- This bulletin provides information on Warranty Administration ? Required Operating Procedures
- This technical bulletin provides a procedure to replace the 4 5 6 clutch housing if the bushing was found...
- This Informational Bulletin provides information on availability of Diesel Fuel additives.
- Thins informational bulletin provides information on Paint-less Dent Repair Process.
- This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the
- This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining...
- This engineering information (EI) is requesting information from technicians to perform the check list...
- This warranty administration bulletin provides information on Warranty Administration
- This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the...
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