I DRIVE A 2008 PONTIAC GRAND PRIX GXP AND HAVE HAD NOTHING BUT ISSUES WITH THE TRANSMISSION.WHEN COMING TO A COMPLETE STOP AND THEN TRYING TO ACCELERATE THE CAR WILL STRUGGLE TRYING TO GO.THEN WE WILL GET A BIG JOLT AS THE CAR SLIPS INTO GEAR.WE HAVE ALMOST GOT IN AN ACCIDENT FROM THIS AS WE WERE TURNING INTO A STORE AND ALL OF …
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I DRIVE A 2008 PONTIAC GRAND PRIX GXP AND HAVE HAD NOTHING BUT ISSUES WITH THE TRANSMISSION.WHEN COMING TO A COMPLETE STOP AND THEN TRYING TO ACCELERATE THE CAR WILL STRUGGLE TRYING TO GO.THEN WE WILL GET A BIG JOLT AS THE CAR SLIPS INTO GEAR.WE HAVE ALMOST GOT IN AN ACCIDENT FROM THIS AS WE WERE TURNING INTO A STORE AND ALL OF A SUDDEN THE CAR WILL NOT GO.AS ON COMING TRAFFIC IS COMING WE PURSUE TO TRY TO PUSH A LITTLE HARDER ON THE GAS PEDAL BEFORE FINALLY GETTING A BIG JOLT AND THE CAR GETS INTO GEAR. WE HAVE TOOK THE CAR OVER 9 TO 10 TIMES TO DEALERSHIP AND FILED A COMPLAINT WITH GM.THE DEALERSHIP CLAIMS THAT THEY ARE HAVING ISSUES DUPLICATING THE ISSUE.I DON'T KNOW HOW WHEN IT HAPPENS MORE THAN OFTEN. ITS GETTING PRETTY BAD AND SOON I HAVE A FEELING IT IS GOING TO GO OUT. WE WERE ABLE TO GET ARE WARRANTY ON THE CAR EXTENDED SINCE WE HAVE BEEN TAKING IT TO THE DEALERSHIP FOR THIS ISSUE SINCE AROUND 60 K MILES. WE ARE GOING BACK THIS WEEK TO DROP IT OFF AGAIN.FEELS LIKE A TORQUE CONVERTER AND THEY WILL NOT CHECK ANY OF THE TRANSMISSION PARTS. WE HAVE EVEN REQUESTED TO PAY OUT OF POCKET TO TAKE A LOOK AT THE TRANSMISSION AND TAKE IT APART TO SEE IF THEY CAN FIND ISSUES.THEY HAVE DECLINED IT AS IF THEY DON'T WANT ANYTHING TO DO WITH IT.I DID SOME RESEARCH AND THIS IS WHAT THEY CLAIM THE ISSUE IS "CONVERTER RELIEF VALVE IS THE MAIN CULPRIT IN THE 4T65-HD (AS USED IN THE LS4 APPLICATION) TCC FAILURES.THIS VALVE BLEEDS OFF AT TOO HIGH A PRESSURE,WHICH DAMAGES THE TCC OVER TIME" UPON THE DEALERSHIPS REQUEST WE HAVE HAD ARE TRANSMISSION FLUSHED,FUEL INJECTORS CLEAN AND ON THE 8TH TIME TAKING IT THERE HAVE FOUND THAT TWO MOTOR MOUNTS WERE BROKEN AND THEY CLAIM THAT THIS IS WHAT THE ISSUE WAS. $1,500 DOLLARS LATER AFTER THE REPAIR WE ARE STILL HAVING NOTHING BUT ISSUES WITH THE TRANSMISSION.GM NEEDS TO DO SOMETHING TO GET THIS FIXED BEFORE SOMEONE GETS HURT OR EVEN KILLED. *JS
NHTSA ODI #10460926
Mileage unknown · Mar 16, 2012
Power Train
TRANSMISSION FAILED WITHOUT NOTICE. DOES NOT MOVE WHEN IN DRIVE, 1ST, 2ND, OR 3RD. HOWEVER REVERSE WORKS FINE. *TR
NHTSA ODI #10451985
55,000 miles · Mar 7, 2012
Power Train
DELAYED ENGAGEMENT FROM A DEAD STOP, ENGINE REVVED, CAR DIDN'T MOVE AND THEN SLAMMED INTO FIRST GEAR. SINCE ORIGINAL DATE, IT DOES IT SPORADICALLY AS WELL AS SLIPS IN OTHER GEARS. PREPARING TO TAKE TO DEALER BUT FROM READING ONLINE, IT'S OBVIOUS THERE IS A KNOWN DEFECT IN THESE TRANSMISSIONS. *TR
NHTSA ODI #10450651
39,000 miles · Sep 21, 2011
Power Train
I HAVE TWO ISSUES WITH MY TRANSMISSION. MY VEHICLE ONLY HAS 39,000 MILES. REV-AND-CLUNK STARTS AND NOT STARTING OFF FROM A STOP. THIS IS HAPPENING MORE FREQUENTLY AS THE MILES RACK UP. I HAVE A 2008 PONTIAC GRAND PRIX GXP. *TR
NHTSA ODI #10426643
62,051 miles · Mar 18, 2011
Power Train
2008 PONTIAC GRAND PRIX GXP V8 TRANSMISSION FAILURE. CAR SHUDDERS, TRANSMISSION SLIPS, CAR SHAKES AT ALL SPEEDS. DEALER BLAMED IT ON TIRES, TIRES BEEN REPLACED AND BALANCED. HAVE BALANCING PAPER WORK TO PROVE IT. *TR
NHTSA ODI #10390571
61,000 miles · Mar 10, 2011
Power Train
2008 PONTIAC GRAND PRIX GXP. SLIPPING TRANSMISSION, STILL UNDER WARRANTY, DEALER SAYS CANNOT REPLICATE ISSUE. CAR VIBRATES HORRIBLY, SLIPS INTO EVERY GEAR. DEALER WILL NOT FIX UNTIL TRANSMISSION STOPS WORKING ALL TOGETHER. CAR HAS BEEN TURNED IN FOR THIS ISSUE 6 TIMES. GM NEEDS TO FIX IT!!!!!!!!!!!!!!!!!!!!!! *TR
NHTSA ODI #10389689
36,300 miles · Feb 20, 2011
Power Train
AFTER COMING TO A COMPLETE STOP THEN ACCELERATING THE TRANSMISSION HAS A 'SHUDDER'. OCCURS A FEW TIMES A MONTH. NOTHING HAD BEEN DONE TO FIX THE PROBLEM. CAR ONLY HAS 36,300 MILES ON IT. ORIGINAL TRANSMISSION FLUID AS WELL. *TR
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) notified the agency on July 3, 2014, that they are recalling 5,877,718 model year 2000-2005 Chevrolet Impala and Monte Carlo, 1997-2003 Chevrolet Malibu, 2004-2005 Malibu Classic, 1999-2004 Oldsmobile Alero, 1998-2002 Oldsmobile Intrigue, 1999-2005 Pontiac Grand Am and 2004-2008 Pontiac Grand Prix vehicles. In these models, the weight on the key ring and/or road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Consequence & remedy
Consequence: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury.
Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 9, 2014. GM's number for this recall is 14350.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1
RQ17002 · Loss Of Headlights
Opened Apr 24, 2017 · Closed Mar 29, 2021
Status: closed (inferred from source dates) · Exterior Lighting:headlights
The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac Grand Prix. This scope includes the Trailblazer/Envoy variants: 2002-2006 Envoy XL/Trailblazer EXT and 2004-2005 Envoy XUV. The original scope of this investigation was expanded to include all vehicles equipped with the subject Headlight Driver Module (HDM). The focus of the investigation was to determine whether actions performed by General Motors adequately addressed any unreasonable risk to motor vehicle safety in the subject vehicles concerning the headlights and the HDM that controls them.Under normal electrical load and environmental conditions, the HDM can overheat inside the Underhood Electrical Center (UEC). This can cause the module to fail and result in a simultaneous loss of both low beam headlights and both daytime running lights (DRLs), often with no warning or prior detectability to the driver. This failure can be intermittent or permanent. No other exterior lights are affected. High beams, turn signals, brake lights, and reverse lights are still operational.General Motors addressed this issue with 2 recalls (14V755 & 15V519) and a special coverage program (N172091910). In view of the recalls and special coverage program implemented by GM and the vehicle high beams continuing to operate, ODI has tentatively concluded that the actions taken by GM mitigate any unreasonable risk to safety posed by HDM failure in the subject vehicles.Accordingly, the investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
2008 Pontiac Grand Prix Problems, Complaints & Recalls | Skip That Year
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