TL*THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 1500 HD. WHILE DRIVING APPROXIMATELY 55 MPH, THE VEHICLE LOST COMPLETE POWER. UPON FURTHER INSPECTION, THE CONTACT NOTICED FLAMES UNDER THE HOOD OF THE VEHICLE. THE FIRE DEPARTMENT EXTINGUISHED THE FLAMES, BUT THE VEHICLE WAS COMPLETELY DESTROYED. THE CAUSE OF THE FAILURE WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGES WERE 60,000.