I was driving down the highway at 60 MPH and a display warning came on the display monitor. It said shift into neutral and restart engine. Then the engine died and I had to try and get off the highway. There was a complete lose of power so getting off the highway was difficult without any power including steering. The engine would not restart and when to tow truck came about 2 hours later it still would not start or shift into neutral to be loaded. Eventually the tow driver got it to shift into neutral so he could loaded the truck. My safety was at risk because it was difficult to get off the road and had there been more traffic it could of resulted in a collision. I was in a dead area for phone service and I had to sit there for about 2 hours waiting for someone to stop and help me get to an area with cell service. The pickup was dropped off at the nearest GM dealership and they looked at it and the engine had a catastrophic failure. It requires a new engine, but since it is under warranty it may take up to 1 years for a replacement.