General Motors said in an NHTSA recall report that 7,840 vehicles may have faulty transmissions that were built with an incorrect part.
“The transmission may have been built with an incorrect sun gear, which can result in the driver-side half-shaft disengaging from the transmission,” the report said. “This condition can cause the driver-side half-shaft to disengage from the transmission, causing a loss of propulsion and/or a loss of mechanical park.”
The recall affects different makes and models manufactured by GM.
According to the report, the loss of propulsion or mechanical park can increase the risk of a crash and a roll-away. If the vehicle has the problem, drivers might hear a clicking or grinding noise from the front of the vehicle.
· 2023 Cadillac XT6 (613 vehicles)
· 2023 GMC Acadia (1,059 vehicles)
· 2022-2023 Cadillac XT5 (783 vehicles)
· 2023 Chevrolet Blazer (444 vehicles)
· 2023 Chevrolet Traverse (4,941 vehicles)
GM said it had received 164 complaints potentially related to the issue, but none that resulted in crash or injury.
Owners will receive a letter about the fix by May 1. The repair is free.