TL* THE CONTACT OWNS A 1999 CADILLAC DEVILLE. THE CONTACT STATED THAT THE ENGINE MISFIRED, WHICH CAUSED AN ENGINE COMPARTMENT FIRE. THE VEHICLE WAS TAKEN TO THE DEALER, AND REPAIRED AT AN EXPENSE OF $4500.00. ONE YEAR AFTER THE REPAIR THE FAILURE RECURRED. HE CONTACTED THE DEALER AGAIN, BUT WAS ADVISED THAT BECAUSE THE WARRANTY EXPIRED THEY WOULD NOT PROVIDE ANY ASSISTANCE. HE THEN ADDED THAT THEY WERE AWARE THAT NORTH STAR ENGINES ARE PRONE TO BACK-FIRING. NO REPAIRS WERE MADE. THE FAILURE MILEAGE WAS 52,000, THE CURRENT MILEAGE WAS 70,000. UPDATED 10/20/09 *CN THE CONSUMER ALSO STATED THE HEAD GASKET FAILED AS WELL. UPDATED 10/22/09