WHILE VEHICLE WAS OFF AND PARKED CONSUMER SAW SMOKE COMING FROM UNDERNEATH THE VEHICLE. WITHOUT ANY WARNING VEHICLE CAUGHT ON FIRE. DEALER AND MANUFACTURER WERE NOTIFIED.*AK ORIGINALLY SEEN SMOKE COMING FROM UNDER DASH. THEN OBSERVED SMOKE COMING FROM BETWEEN CAB AND BODY OF TRUCK. LOOKED UNDERNEATH AND SEEN WIRING HARNESS ON FIRE. *YH