WHILE DRIVING 10 MP AND TURNING THE VEHICLE STALLED. VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION , AND THE MECHANIC COULD NOT DUPLICATE THE PROBLEM. THE PASSENGER FRONT SEAT BELT WAS INOPERATIVE. VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION AGAIN, AND THE MECHANIC REPLACED THE SEAT BELT. HOWEVER, THE PROBLEM RECURRED. THEN, VEHICLE WAS INVOLVED IN A FRONTAL COLLISION AND BOTH FRONTAL AIR BAGS FAILED TO DEPLOY. THIS INFORMATION WAS PROVIDED BY MRS. SIKAKOY'S DAUGHTER LESLIE SANCHEZ.*AK