THIS WAS THE FIRST INCIDENT: AS I WAS DRIVING THEN SUDDENLY THE TRUCK STARTED TO BEEP AND MOVES BACK AND FORTH AND MADE A BRAKING SOUND. AND I WENT INTO THE SIDE AND HIT A SMALL POST AND THE SEAT BELT TIGHTEN. NOW MY BACK HAS BEEN HURTING ME SINCE. AND SOME LIGHTS WERE ON. THE VSC TRAC AND TRAC OFF LIGHTS WERE ON. THEN AFTER THAT ONE I HAVE BEEN DRIVING VERY CAREFUL BUT IT WILL STILL DO THE SAME THING. THE BEEP STARTS AND THE SWIRLING BACK AND FORTH. BUT I HAVE BEEN DRIVING SLOWER TOO SO I DON'T GET OUT OF CONTROL. THIS IS VERY SCARY. AFTER THE I TURN OFF THE TRUCK THE LIGHTS ARE NOT ON. BUT THE THING IS THAT IT JUST HAPPENS. I HAVE NO I IDEA WHEN OR WHAT TIME. I HOPE I CAN GET HELP ON FIXING THIS PROBLEM. THANK YOU *TR