WAS HAVING A HARD TIME STARTING THE CAR AT TIMES, ESPECIALLY ON SHORT TRIPS IN TOWN. TOOK ABOUT 7 CRANKS TO FINALLY GET IT STARTED. DROVE THE CAR THE NEXT DAY, EVERYTHING SEEMED OKAY DID NOT DRIVE CAR AT ALL OVER THE WEEKEND. GOT INTO THE CAR ON MONDAY AND HEARD A HUGE NOISE. I THOUGHT THE WINDSHIELD BROKE. LOOKED UP AND SAW SMOKE COMING FROM UNDER HOOD. UNLATCHED HOOD, AND SAW THE INTAKE MANIFOLD EXPLODED ALONG WITH THE INTAKE PLENUM, AND THERE WAS A FIRE. BURNT THE INJECTOR CONNECTORS. CAR WAS NOW AT DEALERSHIP, AND CHEVROLET WAS SENDING AN INVESTIGATOR TO LOOK AT CAR AS THIS WAS A POSSIBLE RESULT FROM A RECALL BY GM REGARDING THE FUEL PRESSURE REGULATOR, WHICH I TOOK TO DEALER TO HAVE IT REPLACED. HOPEFULLY GM WILL TAKE OFF THIS.*AK