Vehicle recall 21V758000 · September 29, 2021
GMC Sierra 2500, GMC Sierra 3500 and 2 more models
The bolts that attach the brake pressure modulator valve (BPMV) assembly may not be properly tightened, which could fail to seal the two sub-assemblies and allow water intrusion.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
Park affected vehicles outside, away from buildings, until they are repaired. This is the manufacturer’s safety advisory for this recall.
- Summary
- General Motors, LLC (GM) is recalling certain 2021-2022 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicles with electronic brake control modules (EBCM) replaced during vehicle assembly. The bolts that attach the brake pressure modulator valve (BPMV) assembly may not be properly tightened, which could fail to seal the two sub-assemblies and allow water intrusion.
- Consequence
- Water in the BPMV may cause an electrical short circuit and increase the risk of fire.
- Remedy
- Owners are advised to park outside and away from other structures until the recall repair is completed. Dealers will replace the BPMV assembly, free of charge. Owner notification letters were mailed on October 20, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020 or GMC customer service at 1-800-462-8782. GM's number for this recall is N212349181.
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Recall details
- NHTSA campaign
- 21V758000
- Reported to NHTSA
- September 29, 2021
- Filed by
- General Motors, LLC
- Manufacturer campaign
- N212349181
- Owner notification
- October 20, 2021
- Vehicles potentially affected
- 3,241
- Initiated by
- the manufacturer
- Components
- Service brakes, hydraulic › Power assist › Electric › Control module
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Chevrolet Silverado 2500 (2021-2022): 2022, 2021
- Chevrolet Silverado 3500 (2021-2022): 2022, 2021
- GMC Sierra 2500 (2021-2022): 2022, 2021
- GMC Sierra 3500 (2021-2022): 2022, 2021
Has your Chevrolet been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Chevrolet dealer can also check your VIN. Recall repairs are free.