IWAS DRIVING AT LOW SPEED WENT TO STOP AT STOP SIGN WHEN BRAKE PEDDLE WENT TO FLOOR.I CRASHED INTO STOP SIGN TO STOP . TRUCK WAS TOWED TO DEALER. I WAS TOLD TO MAJOR BRAKE LINE BURST. TRUCK IS NOW AT DEALER BEING FIXED. AT A PRICE OF 2800.00. SOMETHING HAS TO BE DONE. THIS CAN'T GO ON ANY LONGER.