SIMPLE FACTS WHEN REAR ENDED THE SEATS ON 1999 BUICK LESABRE BROKE BACK SENDING IN BACK SEAT,SEAT BELT NEARLY KILLED ME , AND THE JACK PLACED ON THE RIGHT WING FLEW IN THE FRONT SEAT...... THEN IN 2002 THE CAR CAUSED A MAJOR EXPLOSION NEARLY KILLING ME WITH A FLYING BUICK SIGN CAUGHT ON FIRE THE TIRES .....ETC PROBLEM ....INTAKE MANIFOLD THE CAR ONLY HAD LITTLE MILEAGE AND YES WAS WELL MAINTAINED