DRIVING ON TO AND ON RAMP AT ABOUT 7MPH THE TRUCK BEGAN ACCELERATING ON ITS OWN. BRAKES WERE APPLIED AND WE SPINNED OUT OF CONTROL TO THE LEFT AND HIT A GAURDRAIL, CAUSING DAMAGE TO THE FRONT BUMPER/RIGHT FENDER AND RADIATOR, MAYBE MORE I WILL GET AND ACTUALL COST ESTIMATE TODAY. IT SEEMS TO ME THAT THE CRUSIE CONTROL IS ACTIVATING BY ITSELF. *AK