General Motors has decided that a safety defect exists in certain 2018-2020 Buick, Cadillac, Chevrolet and GMC vehicles. They will be notifying owners with instructions about how to get their vehicle repaired.

According to the defect report, some of these vehicles are equipped with a start / stop accumulator that may have missing bolts on the end cap. These loose bolts could result in a transmission oil leak that could progress into a complete loss of vehicle propulsion. A transmission leak in the presence of an ignition source could also result in a vehicle fire.

Dealers will inspect the start-stop transmission accumulator and replace any missing bolts. GM’s number for this recall is N202313440 and the NHTSA campaign number is 20V-668.