AFTER MAKING A FEW ERRANDS, I PARKED MY 2004 CHEVY TRAILBLAZER EXT IN MY DRIVEWAY AROUND NOON. I IMMEDIATELY WENT INSIDE MY HOUSE. AROUND 4:30 PM I WENT TO GET IN MY TRUCK AND FOUND THE DRIVERS SEAT HAD BEEN ON FIRE. THE ENTIRE SEAT AND CEILING WAS DESTROYED. THE CEILING'S MELTED PLASTIC/MATERIALS WERE ALL OVER EVERYTHING. EVERYTHING WAS COOL TO THE TOUCH AT THIS TIME.THERE IS FIRE DAMAGE THROUGHOUT THE ENTIRE INSIDE OF THE TRAILBLAZER. EVERYTHING INSIDE IS COVERED WITH HEAVY BLACK SOOT OR PIECES OF MELTED PLASTIC. YOU CAN'T SEE THROUGH THE WINDOWS. I HAD MY HUSBAND CALL 911. POLICE & FIRE RESPONDED. THEY DISCONNECTED THE BATTERY. THE TRUCK IS A TOTAL LOSS. I AM THE ORIGINAL OWNER. THE FIRE MARSHALL SAYS IT STARTED IN ONE OF THE MOTORS IN THE DRIVER'S SEAT. I DO NOT HAVE HEATED SEATS. HE ALSO STATED THAT WE WERE FORTUNATE THAT THERE WAS NO OPEN WINDOW TO HELP FUEL THE FIRE AND THAT VEHICLE WAS PARKED WITHOUT OCCUPANTS WHEN THIS OCCURRED. *TR