NHTSA Complaint #10118501 — 2005 PONTIAC GRAND PRIX

2005 PONTIAC GRAND PRIX GT SEDAN VIN #[XXX] PURCHASED 12/16/2004. INTERMITTENTLY VEHICLE STALLS/ LOSS OF POWER IN THE ENGINE. WHILE DRIVING THE VEHICLE IT WILL SUDDENLY JUST LOSES POWER. YOU CONTINUE TO PRESS THE ACCELERATOR PEDAL AND THEN THE ENGINE WILL SUDDENLY TAKE BACK OFF AT A GREAT SPEED. THIS HAS HAPPENED WHILE DRIVING NORMALLY WITHOUT TRYING TO ACCELERATE AND ALSO WHILE TRYING TO ACCELERATE. THE CAR HAS LOST POWER WHILE TRYING TO MERGE IN TRAFFIC. THE CAR HAS LOST POWER WHILE TRYING TO CROSS HIGHWAYS. THE CAR HAS LOST POWER WHILE JUST DRIVING DOWN THE ROAD. GMC HAS PERFORMED THE FOLLOWING REPAIRS WITHOUT FIXING THE PROBLEM. 12/30/2004 [XXX]-MODULE, POWERTRAIN CONTROL-ENGINE REPROGRAMMING. 01/24/2005 [XXX]-SOLENOID,PRESSURE CONTROL-REPLACED. 02/04/2005 [XXX]-MODULE, PCM/VCM-REPLACED. 02/14/2005 [XXX]-PEDAL,ACCELERATOR-REPLACED. DEALERSHIP PURCHASED FROM CAPITAL BUICK-PONTIAC-GMC 225-293-3500. DEALERSHIP HAS ADVISED THAT THEY DO NOT KNOW WHAT IS WRONG WITH THE CAR. WE HAVE BEEN TOLD THAT WE HAVE TO GO DIRECT TO PONTIAC WITH THE PROBLEM. HAVE BEEN IN CONTACT WITH PONTIAC SINCE 02/15/05. PONTIAC ADVISED THAT THEY WERE GOING TO RESEARCH THE PROBLEM AND SEE IF ANY OTHER GRAND PRI WAS REPORTING LIKE PROBLEMS. SO FAR THE ONLY ADVICE FROM PONTIAC IS THEY WANT US TO COME IN AND TAKE ANOTHER GRAND PRIX OFF THE LOT AND SEE IF WE CAN GET THIS CAR TO DUPLICATE THE SAME PROBLEM. THIS DID NOT IMPRESS ME AT ALL. SO AFTER WAITING FOR 2-1/2 MONTHS FOR PONTIAC TO DO SOMETHING TO FIX THE PROBLEM, I HAVE DECIDED TO REPORT THIS TO NHTSA. *AK *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)