Problems · by component
2003 Pontiac Grand Prix engine problems
31 owner complaints to NHTSA about the 2003 Pontiac Grand Prix cite engine, 26% of all 119 complaints for this model year.
Complaints
31
26% of all complaints
Crashes
0
Reported by owners
Fires
24
Reported by owners
Injuries
1
Reported by owners
What owners say about the engine
Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNED A 2003 PONTIAC GRAND PRIX. WHILE THE CONTACT'S VEHICLE WAS PARKED AT A FUEL STATION, SHE WAS INFORMED THAT SMOKE WAS COMING FROM THE VEHICLE. THE CONTACT MOVED THE VEHICLE AWAY FROM THE FUEL PUMPS. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE CONTACT STATED THAT SOMEONE ATTEMPTED TO OPEN THE HOOD AND NOTICED FLAMES INSIDE THE ENGINE COMPARTMENT. THE FIRE DEPARTMENT WAS ABLE TO EXTINGUISH THE FIRE. THE POLICE WAS AT THE SCENE, BUT NO REPORT WAS FILED. THE VEHICLE WAS TOWED TO AN IMPOUND LOT. THE VIN WAS INCLUDED IN NHTSA CAMPAIGN NUMBER: 15V701000 (ENGINE AND ENGINE COOLING). THE VEHICLE WAS NOT DIAGNOSED AND WAS DEEMED DESTROYED. THE DEALER AND MANUFACTURER WERE NOT CONTACTED. THE FAILURE MILEAGE WAS 69,000. *DT*JB”
“TL* THE CONTACT OWNS A 2003 PONTIAC GRAND PRIX. WHILE DRIVING VARIOUS SPEEDS, OIL LEAKED ONTO THE ENGINE. AN INDEPENDENT MECHANIC DIAGNOSED THE VEHICLE AND STATED THAT THE VALVE GASKET COVER NEEDED TO BE REPAIRED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 192,599. *BF CONSUMER STATED RECALL WAS REPAIRED BUT HAPPENED AGAIN, MECHANIC STATED IT WASN'T DONE PROPERLY BECAUSE SILICONE IN PLACE OF GASKET. HAD ANOTHER RECALL ISSUED IN 2016 AN HAD IT REPAIRED. WITHIN A MONTH LATER, CAR STARTED RECALL WAS NOT DONE CORRECTLY BECAUSE IT WAS SILICONE. *JB”
“TL* THE CONTACT OWNED A 2003 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE VEHICLE CAUGHT FIRE WHILE PARKED. THE FIRE WAS EXTINGUISHED BY THE CONTACT. A POLICE REPORT WAS NOT FILED. THE FAILURE WAS NOT DIAGNOSED BY A DEALER OR INDEPENDENT MECHANIC. THE CONTACT RESEARCHED THE VIN ONLINE AND FOUND NHTSA CAMPAIGN NUMBER: 15V701000 (ENGINE AND ENGINE COOLING). THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS APPROXIMATELY 106,000.”
“CAR WAS IDLING IN A DRIVE THROUGH AND SMOKE BEGAN POURING OUT OF ENGINE COMPARTMENT. SHUT OFF CAR AND POPPED HOOD AND THE ENGINE WAS ON FIRE (VISIBLE FLAMES) UNDERNEATH WHERE OIL WOULD BE ADDED TO CAR. FIRE DEPARTMENT WAS CALLED TO EXTINGUISH FIRE. PREVIOUS OWNER REPAIRED 2009 RECALLED PART BUT I WAS UNAWARE OF 2015 RECALL.”
“THE CAR HAD A RECALL. THE ENGINE OIL DRIPPED INTO THE MANIFOLD AND CAUGHT FIRE. THE CAR IS TOTALED NOW. I WAS INSIDE OF A WALMART AND THE CAR WAS PARKED OUTSIDE.”
“TL* THE CONTACT OWNS A 2003 PONTIAC GRAND PRIX. WHILE DRIVING OVER 55 MPH, THE ACCELERATOR PEDAL WOULD ERRONEOUSLY DEPRESS, CAUSING THE SPEED TO INCREASE. THE CONTACT STATED THAT THE VEHICLE DID NOT HAVE A CRUSE CONTROL OPTION. THE CONTACT ALSO INDICATED THAT THE ENGINE HESITATED WHEN IDLING. THE CAUSE OF THE FAILURES WAS NOT DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE CONTACT NOTIFIED CARMART IN RADCLIFFE, KY OF THE FAILURE. THE FAILURE MILEAGE WAS 136,000.”
Showing 6 of 31 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.