This is due to air bag software that goes into test mode and thus, does not inflate airbags and can cause seat belts not to function.
GM will notify customers and update the software for free. The recall involves:
- 2014-2016 Buick LaCrosse, Chevrolet SS and Spark EV
- 2014-2017 Buick Encore, GMC Sierra and Chevrolet Corvette, Trax, Caprice and Silverado
- 2015-2017 Chevrolet Tahoe, Suburban and Silverado HD, GMC Yukon, Yukon XL and Sierra HD and Cadillac Escalade and Escalade ESV