Service bulletins for the 2021 KARMA Revero
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.
34 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Transmission and driveline are shown. Show all
| SC-26-12-01 | 2026-03-31. Service bulletin. POWER TRAIN. Update to procedure for oil sump removal & replacement |
|---|---|
| TB-24-16-01 | 2024-06-21. Over-the-air update. FUEL/PROPULSION SYSTEM; POWER TRAIN. On complaint this is offered to provide a software update (BL1070) over the air to remedy the complaint of a DTC and drive behavior. |
| CC-23-00-02 | 2023-11-27. Service bulletin. POWER TRAIN. This bulletin will outline the process of what to expect and what to perform for a software update. |
| CC-23-00-01 | 2023-06-15. Service bulletin. BACK OVER PREVENTION:SOFTWARE; POWER TRAIN; EQUIPMENT:ELECTRICAL. Baseline Software update for specified models |
| TB-17-42-02 | 2021-05-03. Service bulletin. POWER TRAIN. It has been found that certain vehicles may exhibit a whining sound heard from the rear during low-speed full lock turns. The remedy for this concern is draining and refilling the differential with the appropriate fluid as directed. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.