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Service bulletins for the 2020 Chevrolet Traverse

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

782 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
21-NA-1422022-03-30. Service bulletin. SERVICE BRAKES, HYDRAULIC. This technical bulletin provides repair information to correct a customer concern of hearing front brake grind/groan noise after sitting overnight.
PIC64502022-03-14. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a process to correct the concern of Unable to contact OnStar after the 3G EOL on 2015-2022 model year vehicles in the United States.
PIT5745C2022-03-14. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.
PIT3271L2022-03-14. Service bulletin. WHEELS; 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.
PIP4902P2022-02-14. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS. 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.
PIP5632F2022-02-14. Service bulletin. ENGINE. 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.
PIP4723F2022-02-14. Service bulletin. SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
PIC6048N2022-02-14. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; STEERING; AIR BAGS; LANE DEPARTURE; BACK OVER PREVENTION. This Preliminary Information communicates to the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
PIP5628E2022-01-24. Service bulletin. ENGINE AND ENGINE COOLING. 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
030310007K2022-01-03. Service bulletin. TIRES; WHEELS. This service bulletin provides information for dealers/technicians on Tire/Wheel Characteristics (Vibration, Balance, Shake, Flat Spotting) of GM Original Equipment Tires.
030091001H2022-01-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY:VEHICLE CONTROLS:STEERING. This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure, when diagnosing vibration concerns.
21NA2642021-12-27. Service bulletin. EQUIPMENT; STRUCTURE:BODY:HATCHBACK/LIFTGATE:HINGE AND ATTACHMENTS; STRUCTURE:BODY:HATCHBACK/LIFTGATE. This informational bulletin provides information for dealers/technicians on a customer commenting on liftgate actuator showing a leaking residue on strut.
21NA2522021-12-27. Service bulletin. EQUIPMENT; PARKING BRAKE:ELECTRICAL; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of Electronic Park Brake Applying Intermittently After Vehicle Shutdown without DTC?s.
20NA1362021-12-27. Service bulletin. EQUIPMENT; POWER TRAIN. This informational bulletin describes/outlines the process for the 9T65 Automatic Transmission Replacement Pilot Program (U.S. Only).
19NA1042021-12-27. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This service bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.
20NA1482021-12-20. Service bulletin. AIR BAGS; BACK OVER PREVENTION. This technical bulletin provides repair information to correct a customer concern of hearing a plastic to metal squeak/creak noise coming from the driver or passenger side B-Pillar area.
20NA1362021-12-20. Service bulletin. POWER TRAIN. This informational bulletin describes/outlines the process for the 9T65 Automatic Transmission Replacement Pilot Program (U.S. Only).
20NA1322021-12-20. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
19NA2562021-12-20. Service bulletin. ENGINE. This service bulletin provides diagnostic aid information/procedures to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine.
18NA0732021-12-20. Service bulletin. ENGINE. 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.
PIT58642021-12-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE. This Preliminary information communicates that a customer may experience that the wireless charging indicator does not display on the radio screen when charging a phone. The technician is advised not to perform any repairs at this time as engineering is working on a resolution.
PIP5608H2021-10-25. Service bulletin. POWER TRAIN. This Preliminary information communicates to perform a transmission fluid drain and fill to correct a TCC shudder concern.
PIP5608G2021-09-13. Service bulletin. POWER TRAIN. This Preliminary information communicates to perform a transmission fluid drain and fill to correct a TCC shudder concern.
PIT5662F2021-09-13. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; PARKING BRAKE. This Preliminary information communicates information to diagnose DTC C056D or C056E.
PIC6438B2021-09-13. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This Preliminary information communicates a condition where the Video Processing Control Module is not able to be programmed to the vehicle. This PI offeres a couple workarounds while Engineering evaluates the concern.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.