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: Wipers and washers are shown. Show all
| 22-NA-161 | 2025-09-27. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER. This informational bulletin provides information for dealers/technicians on power folding mirrors do not fold at the same speed. |
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| 24-NA-046 | 2025-03-13. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. This technical bulletin provides a procedure to correct the condition of Suction Cup Marks on Window Glass. |
| PIE0818 | 2025-03-06. Service bulletin. STRUCTURE:BODY; VISIBILITY/WIPER. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the outside rearview mirror skull cap missing. |
| 21-NA-043 | 2025-02-12. Service bulletin. VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer. |
| 23-NA-167 | 2024-12-18. Service bulletin. VISIBILITY/WIPER. This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirrors. |
| PI0754G | 2024-08-17. Service bulletin. VISIBILITY/WIPER. This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.