WHILE DRIVING AT 25 TO 30 MPH ON ICY ROADS UPHILL THE VEHICLE SUDDENLY ACCELERATED UNEXPECTADLY. THE ACCELERATOR PEDAL WENT TO THE FLOOR BY ITSELF. I STOMPED THE PEDAL BUT IT WOULD NOT DECELERATE. I DID NOT TOUCH THE BRAKES BECAUSE OF THE ICY CONDITIONS. I WAS ALREADY OUT OF CONTROL SO I SHIFTED TO NEUTRAL AND TRIED TO RECOVER THE TRUCK. NO RECOVERY WAS POSSIBLE AND A ACCIDENT INVOLVING THE TRUCK ROLLING OVER OCCURED. THANKFULLY I WAS THE ONLY PERSON INVOLVED OR HURT.