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Campaign 21V421000

High Priority NHTSA Official Language
ID: #21V421000 MFR: General Motors, LLC

What This Recall Means

Component

AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT

What Happened
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.
Risk if Unfixed
The air bag malfunction indicator light may fail to warn the driver of a problem with the air bag, increasing the risk of injury.

How to Get This Fixed

Free 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.

Affected Vehicles

Is YOUR vehicle affected?

This page lists the models and model years named in NHTSA campaign #21V421000. Matching a model and year on this list does not prove an individual vehicle is affected — some vehicles in an affected model year are never part of the recall population. The authoritative way to know is a VIN check against NHTSA's own records.