General Motors today announced a recall of 4.3 million vehicles globally with 3.64 million of those vehicles located in the US. The recall involves a software bug in the sensing and diagnostic module that could prevent the deployment of the front airbags in certain circumstances preceded by a specific series of events. Most of the vehicles involved are GM's recent trucks and large SUVs.
The repair for this recall requires a software update and no physical parts are required for most vehicles.
The following vehicles are affected by this recall:
2014 - 2016 Chevrolet SS, Spark EV / Buick Lacrosse
2014 - 2017 Chevrolet Corvette, Trax, Caprice, and Silverado 1500 / Buick Encore / GMC Sierra 1500
2015 - 2017 Chevrolet Tahoe, Suburban, Suburban HD / GMC Yukon, Yukon XL / Cadillac Escalade, Escalade ESV
GM stated that it was originally made aware of the problem in May 2016 via an internal Speak Up program that encourages employees to report potential safety issues in its vehicles. GM received a report that a 2014 Silverado involved in a crash did not deploy its front airbags or seat-belt pretensioners. The investigation started on June 7th and GM spent the next several weeks working with Delphi, the supplier of the part, and investigating other possible incidents with similarities to the original report.