TL*THE CONTACT OWNS A 2005 DODGE RAM 2500. WHILE DRIVING AT AN UNKNOWN SPEED, THE TRANSMISSION WARNING LIGHT ILLUMINATED ON THE INSTRUMENT PANEL. IMMEDIATELY, SMOKE AND VAPORS APPEARED FROM THE ENGINE COMPARTMENT. THE CONTACT USED A 10-POUND FIRE EXTINGUISHER, BUT WAS NOT SUCCESSFUL IN EXTINGUISHING THE FLAMES. THE FIRE DEPARTMENT WAS CALLED TO EXTINGUISH THE FIRE. BOTH A POLICE AND FIRE REPORT WERE FILED. THE VEHICLE WAS DESTROYED. THE FAILURE AND CURRENT MILEAGES WERE LESS THAN 28,400.