13-21 AUG TRUCK WAS PARKED IN DRIVEWAY WHILE WE VISITED FAMILY IN SOUTH CAROLINA. TRUCK NOT DRIVEN. DROVE TRUCK 22 AUG TO WORK APPROX. 12.5 MILES. TRUCK WAS PARKED IN PARKING LOT UNTIL 4PM WHEN I DROVE IT HOME. TRUCK WAS PARKED IN DRIVEWAY FROM 4:30 PM UNTIL THE FIRE WAS DISCOVERED BETWEEN 8:30 AND 9:00 PM. I DO NOT KNOW WHEN THE FIRE STARTED AND I HAVE HAD NO PROBLEMS AT ALL WITH THE TRUCK AND I DO NOT KNOW WHAT STARTED THE FIRE. BUT I BELIEVE THE HOTEST PART OF THE FIRE WAS ON THE LEFT SIDE OF THE ENGINE NEAR THE TOP WHERE MOST OF THE DESTRUCTION WAS LOCATED.