AFTER NOT BEING USED FOR APPROXIMATELY ONE MONTH, I TRIED TO START MY 2000 CHEVROLET IMPALA WITH 114,000 (+/-) MILES. THE CAR DID NOT START. I CONNECTED JUMPER CABLES AND AGAIN TRIED. THE CAR DID NOT TURN OVER. I WAITED A FEW MOMENTS AND THEN TRIED AGAIN. WHEN I TURNED THE KEY, THERE WAS AN EXPLOSION AND FIRE. I TURNED THE KEY OFF AND DISCONNECTED THE CABLES. THE TOP OF THE UPPER INTAKE HAD EXPLODED. THE PLASTIC ENGINE COVER HAD DISCONNECTED AND THE OIL FILLER CAP/TUBE HAD PROJECTED TO THE NEIGHBOR'S YARD. THE TOP OF THE MOTOR, FUEL LINE AND SURROUNDING WIRES/INSULATION WAS ON FIRE. THE FIRE WAS PUT OUT BY SMOTHERING. I CALLED A MECHANIC DIRECTLY AFTER THE INCIDENT AND WAS INFORMED OF A RECALL FOR THE FUEL PRESSURE REGULATOR. AFTER VIEWING THE RECALL FOR FOR THE 3.8L (VIN K) FUEL PRESSURE REGULATOR, THE POTENTIAL SITUATION OF A LOW BATTERY COMBINED WITH THE LEAKING REGULATOR CAUSING A BACKFIRE AND THUS EXPLOSION WAS EXACTLY WHAT HAPPENED. I CONTACTED LOCAL CHEVROLET DEALERSHIPS AND WAS THERE WAS NO RECALL FOR MY VEHICLE. I THEN CONTACTED CHEVROLET CUSTOMER SERVICE VIA A PHONE CALL ON DECEMBER 4, 2006. AFTER MULTIPLE PHONE CALLS OVER THE NEXT FEW WEEKS, I WAS REQUESTED TO HAVE THE CAR TOWED, AT MY EXPENSE, TO A LOCAL DEALERSHIP SO CHEVROLET COULD SENT A REPRESENTATIVE TO INSPECT. CHEVROLET THEN CALLED ME THE BEGINNING OF JANUARY TO TELL ME THAT THEY FEEL THE LOW BATTERY CAUSED THE EXPLOSION AND THUS, THEY WERE NOT RESPONSIBLE. I ASKED FOR A COPY OF THEIR INS