Curtain: inflatorRecall 21V-504 · Chevrolet and GMC vehicles
General Motors, LLC recall 21V-504 covers 410,019 Chevrolet and GMC vehicles for a curtain: inflator problem, reported to NHTSA on July 1, 2021. The manufacturer's latest report (2025 Q1) shows 55% of affected vehicles repaired.
Source: NHTSA recall 21V504000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
General Motors LLC (GM) is recalling certain 2015-2016 GMC Sierra 1500, 2500, 3500, and Chevrolet Silverado 1500, 2500, and 3500 trucks. The roof-rail air bag (RRAB) inflator end cap may detach from the inflator, or the inflator sidewall may rupture.
The risk
A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
The fix
Dealers will replace the left and right side RRAB modules, free of charge. Interim owner notification letters informing owners of the safety risk were mailed on August 18, 2021. Owners will receive a second notice when the remedy is available. Phase I owner notification letters were mailed on May 5, 2022. Phase II owner notification letters are expected to be mailed on May 31, 2022. Owners may contact GMC customer service at 1-888-988-7267 or Chevrolet customer service at 1-800-222-1020. This recall supersedes NHTSA recall number 20V-736. GM's number for this recall is N202324251.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
55%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA. 3,057 vehicles were listed as unreachable.