TRUCK HAD BEEN PARKED FOR 12 HOURS ON DRIVEWAY. I HAD JUST LEFT MY RESIDENCE AND 10 MINUTES LATER WAS NOTIFIED TRUCK WAS ON FIRE. AS I LEFT I HAD TO BACK PAST THE TRUCK( 2 FEETAWAY) I SAW NO SMOKE OR SMELLED ANYTHING. WHEN I RETURNED TO HOUSE FIRE DEPT WAS PUTTING OUT FIRE. FIRE WAS CONCENTRATED ON LEFT FRONT FENDER JUST ABOVE WHEEL IN THE AREA OF THE POWER DISTRIBUTION BOX. NEIGHBOR ADVISED THE FIRE WAS COMING OUT UNDER LEFT FRONT SIDE ABOVE TIRE ,WHEN HE CALLED FIRE DEPT. THE TRUCK WAS IN EXCELLENT CONDTION. THERE HAD BEEN NO WORK PERFORMED ON VEHICLE.*AK