Automatic Transmission problems of the 2008 Chevrolet Suburban

The contact owns a 2008 Chevrolet Suburban. The contact stated that while driving at various speeds, the vehicle would shut off without warning. The contact had taken the vehicle to an independent mechanic who was unable to diagnose the failure. The contact has had multiple repairs performed on the engine; however, the failure persisted. The dealer nor the manufacturer were notified of the failure. The vehicle was not repaired. The failure mileage was approximately 169,000.