DRIVING AROUND A CORNER WHEN THE STEERING LOCKED ITS SELF IN POSITION CAUSING THE TRUCK TO NOT TURN, ALMOST AS IF WHEN YOU SHUT THE VEHICLE OFF AND TURN THE WHEEL IT LOCKS IN POSITION. THIS CAUSED THE VEHICLE TO LEAVE THE ROAD AND HIT A TREE. THE DRIVER SIDE AIRBAG DID NOT DEPLOY. THE PASSENGER SIDE AIRBAG DID DEPLOY.