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Service bulletins for the 2021 GMC Sierra

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.

1649 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Body and frame are shown. Show all

Bulletins, newest first
19-NA-2552022-12-03. Service bulletin. 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).
99-00-89-019X2022-10-28. Service bulletin. STRUCTURE. This Warranty Administration bulletin provides information on the Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program.
21-NA-0772022-10-13. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE. This informational bulletin provides information for dealers/technicians on Aero Shutter Related Diagnostic Codes.
12-08-51-002O2022-10-13. Service bulletin. STRUCTURE; EQUIPMENT. This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures.
PIE0701A2022-06-25. Service bulletin. STRUCTURE. This engineering informational bulletin is requesting information from technicians to take pictures of decals wrinkling, peeling, bubbling, discoloration, delaminating and/or coming off and contact the engineer listed.
PIP5358B2022-06-13. Service bulletin. STRUCTURE. This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.
PI0653F2022-06-13. Service bulletin. STRUCTURE; EQUIPMENT. This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center.
PIE07012022-06-10. Service bulletin. STRUCTURE:BODY; EQUIPMENT. This engineering informational bulletin is requesting information from technicians to take pictures of decals wrinkling, peeling, bubbling, discoloration, delaminating and/or coming off and contact the engineer listed.
19-NA-2572022-06-01. Service bulletin. STRUCTURE. This technical bulletin provides repair information to correct a customer concern of the pickup box being out of alignment.
20-NA-1752022-05-31. Service bulletin. STRUCTURE. This technical bulletin provides repair information to correct a customer concern of vertical misalignment between cab and pickup box on driver side of vehicle.
PIT59092022-05-16. Service bulletin. STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS. This Preliminary information communicates that it is normal for the tailgate to drop faster than it used to after the GM Accessory Kicker Audio System is installed.
PIT5886A2022-05-16. Service bulletin. STRUCTURE:BODY:TAILGATE. This Preliminary information communicates an issue with the tailgate latch handle disengaging from the tailgate. Dealers are to remove the tailgate handle standoff brackets.
PIT3227R2022-05-16. Service bulletin. STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS. This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.
PI0281I2022-04-22. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS; STRUCTURE. This preliminary informational (PI) bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
22-NA-0682022-04-06. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE. This technical bulletin provides repair information to correct a customer concern of Diagnostic Tips For Park Assist Off Message / Unwanted Or False Park Assist Alerts / No DTCs.
12-08-51-002N2022-03-19. Service bulletin. EQUIPMENT; STRUCTURE. This informational bulletin provides technicians and dealership personnel with spray-in bed liner general information and repair procedures.
PIT58532021-10-25. Service bulletin. STRUCTURE. This Preliminary information communicates information on correcting a rattle noise on driver side of cowl heat shield.
PIP5776E2021-09-13. Service bulletin. STRUCTURE:BODY. This Preliminary information communicates that a vehicle may exhibit a misfire condition resulting in misfire codes P0300-P308. Upon diagnosis it may be discovered the lifter has come apart. It is recommended to replace the lifter guide and the four lifters.
21NA1012021-07-19. Service bulletin. STRUCTURE:BODY:DOOR; STRUCTURE. This service bulletin provides a procedure to replace both front door seals to correct a customer concern of Howl, Hoot, or Whistle Type Noise when Driving in Crosswinds.
21NA0792021-07-19. Service bulletin. SEATS; STRUCTURE. This technical bulletin provides a procedure to replace the lower seat frame to correct the condition of Pop Noise Heard During Seat Travel and/or Inadequate Seat Rearward Travel due to a supplier installation error.
21NA1012021-07-06. Service bulletin. STRUCTURE. This service bulletin provides a procedure to replace both front door seals to correct a customer concern of Howl, Hoot, or Whistle Type Noise when Driving in Crosswinds.
PIP57992021-05-17. Service bulletin. STRUCTURE; POWER TRAIN. This Preliminary information communicates to the dealer technician to replace the transmission valve body on 2019-2021 10 speed transmissions to correct DTCs P2812 and P2814 setting if Service Information does not lead to root case of these DTCs.
19NA2552021-05-03. Service bulletin. 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).
PIP57982021-04-19. Service bulletin. SUSPENSION; STRUCTURE. This Preliminary information communicates Some customers may comment about a rough idle and/or vibration at idle. This condition may be most noticeable when the engine is completely warmed up and accessories are off, you may also feel this while idling at a stop in Drive. May feel like a misfire, stumble, lopey or lumpy idle or may be described as a low idle. This concern may be caused by several potential causes: Misfire and/or base engine concern Wrong fuel used (regular instead of premium when required) Idle speed fluctuation Engine mount pre-load
PIP57952021-04-19. Service bulletin. STRUCTURE:BODY. This Preliminary information communicates to technicians to replace the rear cover with seal in the event of a rear oil seal leak.

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