Was on the interstate driving 75 mph, with my daughter, her friend, my wife. And the car cut off, and dealership said engine locked. 45 minutes prior i was on a snowy mountain road, and this vehicle has 939 miles on it, one month old. Now i am reading about the investigation, and feel this is negligence on gmc. This could have been a disaster and life changing for me. I dont care if its a 75k vehicle or 135k like mine, this is dangerous!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! the vehicle is currently at the dealership! Told my wife to start recording in case something happened.