TL*THE CONTACT OWNS A 2004 GMC SIERRA 2500. THE CONTACT WAS WARMING UP HIS VEHICLE WITH A PORTABLE COMPRESSOR HOOKED UP TO THE AUXILIARY POWER IN THE CENTER OF THE DASHBOARD TO INFLATE A TIRE. HE NOTICED SMOKE NEAR THE WINDSHIELD ON THE DRIVER'S SIDE. THE CONTACT UNPLUGGED THE COMPRESSOR, SHUT OFF THE VEHICLE, OPENED THE HOOD, AND DISCONNECTED THE BATTERY. THE FRONT OF THE VEHICLE, UNDERNEATH THE DASHBOARD AND THE CABIN WERE ENGULFED IN FLAMES. THE FIRE DEPARTMENT EXTINGUISHED THE FIRE. THERE WERE NO INJURIES. A POLICE REPORT WAS FILED. THE CURRENT AND FAILURE MILEAGES WERE 63,000.