The front airbags may not deploy properly.
General Motors is recalling 3,640,162 model year 2015-2017 Chevrolet Silverado 2500 HD, 3500 HD, Tahoe, Suburban, GMC Sierra 2500 HD and 3500 HD, GMC Yukon, GMC Yukon XL, Cadillac Escalade and Cadillac Escalade ESV vehicles; 2014-2017 Chevrolet Corvette, Silverado 1500, Trax, Caprice Police Pursuit Vehicle, GMC Sierra 1500, Buick Encore; and 2014-2016 Buick Lacrosse, Chevrolet Spark EV and SS vehicles.
Certain driving conditions may cause the airbag sensing and diagnostic module (SDM) software to activate a diagnostic test. During this test, deployment of the front airbags and the seat belt pretensioners would not occur in the event of a crash.
A failure of the front airbags or seat belt pretensioners to deploy in the event of a crash increases the risk of injury to the driver and front passenger.
What to do
GM will notify owners and dealers will reflash the SDM software. Vehicles that have had a previous air bag deployment will have the SDM replaced. These repairs will be performed free of charge. The manufacturer has not yet provided a notification schedule.
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 16007.