Air bags: SRS malfunction warning lamp/lightRecall 21V-421 · Buick and Cadillac vehicles
General Motors, LLC recall 21V-421 covers 285,622 Buick and Cadillac vehicles for a air bags: srs malfunction warning lamp/light problem, reported to NHTSA on June 10, 2021. The manufacturer's latest report (2023 Q2) shows 97% of affected vehicles repaired.
Source: NHTSA recall 21V421000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The 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.
The fix
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.
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
97%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA. 106 vehicles were listed as unreachable.