Vehicle recall defect – General Motors Llc (Gm) Is Recalling Certain 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 And 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. In The Affected Vehicles, Certain Driving Conditions May Cause The Air Bag Sensing And Diagnostic Module (Sdm) Software To Activate A Diagnostic Test. During This Test, Deployment Of The Frontal Air BAGS And The Seat Belt Pretensioners Would Not Occur In The Event Of A Crash.