NHTSA Recall 21V421000: Srs malfunction warning lamp/light (air bags) and software (electrical system)
General Motors, LLC reported this safety recall to NHTSA on , covering an estimated 285,622 vehicles. It affects 10 models including the Buick Envision.
| NHTSA campaign | 21V421000 |
|---|---|
| Manufacturer campaign | N212338110 |
| Components | AIR BAGS › SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM › SOFTWARE |
| Report received | June 10, 2021 |
| Owner notification | July 1, 2021 |
| Initiated by | Manufacturer |
Defect
General Motors, LLC (GM) is recalling certain 2021 Buick Envision, Cadillac CT4, CT5, Escalade, Escalade ESV, Chevrolet Tahoe, Corvette, Suburban, GMC Yukon, Yukon XL vehicles. The communications gateway module incorrectly processes a loss of communication with the sensing diagnostic module (SDM), causing the air bag malfunction indicator light to inconsistently illuminate.
Safety risk
The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.
Remedy
The communications gateway module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N212338110.
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.
Vehicles covered by recall 21V421000
| Make and model | Model years |
|---|---|
| Buick Envision | 2021 |
| Cadillac CT4 | 2021 |
| Cadillac CT5 | 2021 |
| Cadillac Escalade | 2021 |
| Cadillac Escalade ESV | 2021 |
| Chevrolet Corvette | 2021 |
| Chevrolet Suburban | 2021 |
| Chevrolet Tahoe | 2021 |
| GMC Yukon | 2021 |
| GMC Yukon XL | 2021 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.