TRAVELING DOWN THE HIGHWAY AT NORMAL HIGHWAY SPEEDS, MY TRUCK WILL START SHAKING VIOLENTLY TO THE POINT OF BARELY BEING ABLE TO KEEP CONTROL. I HAVE TO SLOW DOWN AND ALMOST COME TO A STOP FOR IT TO STOP SHAKING. THIS HAS HAPPENED ON MULTIPLE OCCASIONS. THE FIRST TIME I SIDE SWIPED A CONCRETE BARRIER AND TORE OFF MY RUNNING BOARD. MY FAMILY REFUSES TO TRAVEL IN THE TRUCK NOW. *TR