2005 Pontiac Grand Prix Powertrain & Transmission Problems

The contact owns a 2005 Pontiac Grand Prix. The contact stated that it was difficult to shift the vehicle into gear. There was an abnormal banging sound coming from the vehicle. There were no warning lights illuminated. The vehicle was taken to an independent mechanic where the transmission fluid was flushed and refilled. The contact was also informed that a spacer was missing. The local dealer was not contacted. The manufacturer was not notified of the failure. The approximate failure mileage was 100,000.

I WAS DRIVING DOWN THE ROAD AND ALL OF A SUDDEN MY CAR LOST POWER AND SAID "REDUCED ENGINE POWER" I WAS PRESSING THE GAS GOING 55 MPH AND IT SUDDENLY LOST ALL RPMS AND SPEED DROPPED. I WAS ALMOST REAR ENDED BY ANOTHER VEHICLE TRAVELING BEHIND ME. I WAS VERY UPSET ON THE SIDE OF THE ROAD WITH MY SON. I WAS TOLD ABOUT MANY OTHERS WHO HAVE HAD THIS PROBLEM WITH PONTIACS. WHAT IS BEING DONE ABOUT THIS? AND IF NOTHING WHY? MY SON AND I WERE VERY LUCKY WE WEREN'T I'M AN ACCIDENT. WANT ANSWERS AND WHY THERE ISN'T A RECALL GETTING THESE CARS FIXED. IT IS VERY UNSAFE.

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE GEAR LEVER SHIFTED FROM PARK TO DRIVE WITHOUT THE BRAKE PEDAL BEING DEPRESSED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 148,000.

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER FOR A SCHEDULED TRANSMISSION FLUSH. THE CONTACT ALSO STATED THAT THE TRANSMISSION FLUID UTILIZED BY THE VEHICLE WAS DEXRON 3, BUT THE DEALER UTILIZED DEXRON 6, WHICH HAD A DIFFERENT VISCOSITY. THE CONTACT ALSO STATED THAT THE VEHICLE STARTED TO JERK WHEN PLACED INTO DRIVE. THE VEHICLE WAS TAKEN BACK TO THE DEALER FOR DIAGNOSTIC TESTING AND THE RESULTS WERE THAT THE TRANSMISSION SOLENOID WAS FAULTY AND NEEDED REPLACEMENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 85,000.

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE TRANSMISSION FAILED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE FAILURE WAS CONFIRMED. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE MANUFACTURER WAS CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS 130,000.

THE CAR WAS ABOUT TO ENTER THE MASS PIKE WHEN ALL FORWARD MOTION STOPPED. THE TRANSMISSION WAS IN 'DRIVE' BUT IT ACTED AS THOUGH IT HAD SLIPPED INTO NEUTRAL. THE CAR WAS DEAD IN THE MIDDLE OF THE ROAD AND THERE WERE A NUMBER A NEAR MISS COLLISIONS BEFORE THE EMERGENCY VEHICLE ARRIVED. THE CAR IS NOW AT A GM DEALERSHIP AWAITING A TRANSMISSION REBUILD. WE BOUGHT THIS CAR NEW AND HAVE HAD A NUMBER OF TRANSMISSION ISSUES STARTING AT 12,456 MILES. WITHIN THE FIRST YEAR OF OWNERSHIP WE REPORTED A 'CLUNKING' NOISE TO THE DEALERSHIP - THEY SAID THEY COULD NOT RECREATE THE PROBLEM. WE HAD ADDITIONAL ISSUES WHERE THE CAR WOULD 1) NOT MOVE WHEN STARTING FROM A TRAFFIC LIGHT OR 2) WOULD ACT AS THOUGH IT WAS IN NEUTRAL WHEN COASTING AND THEN 'BANG' INTO GEAR SEVERAL SECONDS AFTER STEPPING ON THE GAS PEDAL. THESE ISSUES WERE REPORTED TO THE DEALER AT 33657, 45381, 51284, 56446, 61543 AND 72552 MILES. IN EACH CASE, EXCEPT FOR THE ONE AT 56446 MILES THE DEALER SAID THEY COULD NOT REPLICATE THE ISSUE - BUT THEY CHARGED FOR THE TIME. AT 56446 MILES WE TRIED ANOTHER DEALERSHIP AND THEY SPENT OVER AN HOUR TESTING THE CAR. FINALLY, THEY DID EXPERIENCE THE PROBLEM. THEY REPLACED SEVERAL TRANSMISSION PARTS BUT WE EXPERIENCED A SHUDDERING PROBLEM LESS THAN A YEAR LATER. THEY DETECTED A POSSIBLE TORQUE CONVERTER PROBLEM AT THAT POINT BUT SAID IT THE COULD BE DRIVEN AND NO OTHER PARTS OF THE TRANSMISSION WOULD BE AFFECTED. THERE IS A COMMON ISSUE WITH THE TRANSMISSION IN GM V8 CARS - THERE ARE MANY REPORTS OF FAILURES AND EXPENSIVE REPAIRS. IT APPEARS TO BE A DESIGN ISSUE. THE SYMPTOMS STARTED EARLY ON, AND DESPITE OUR MULTIPLE REPORTS OF PROBLEMS AND EXACT ADHERENCE TO THE MAINTENANCE SCHEDULE THERE WAS ALMOST A SERIOUS ACCIDENT. *TR

I BOUGHT THIS CAR FROM AN OLDER MAN WHO RARELY DROVE THIS GRAND PRIX KEPT IT IN GREAT SHAPE AFTER A YEAR WHEN I BOUGHT IT I NOTICED THE TRANSMISSION WOULD GO UP TO 212 DEGREES AND IT WOULD SHIFT VERY HARD OUT OF FIRST AND OUT OF SECOND THEN IT STARTED DOING IT AT 180 DEGREES I TOOK IT TO A GM DEALER TO GET A TRANSMISSION FLUSH AND THEY SAID I WOULD BE DOING MORE HARM THEN GOOD BECAUSE OF ALL THE BROKEN DOWN GEARS IN THE TRANSMISSION. IT SLIPS A LOT NOW AND THEY WANT ME TO BUY A NEW TRANSMISSION AFTER A YEAR OF OWNING IT WHEN THEIR WAS ABSOLUTELY NOTHING WRONG WITH IT WHEN I PURCHASED THE CAR. *TR

MY CAR STARTED HAVING VERY ERRATIC SHIFTING, AND REVVING.

I HAD MY TRANSMISSION REBUILT ON 8/17/12 AFTER IT BLOW ON ME WITH 128,900 MILES. I HAD IT REBUILT BY AAMCO. I TOOK IT BACK TO AAMCO AFTER IT SEEN LIKE I WAS HAVING PROBLEMS ON 12/28/12. GOT IT BACK ON 1/5/13 AFTER THEY SAID THERE WAS NO PROBLEMS IT WAS THE OIL IN MY CAR. SO I SAID OK BUT STILL DIDN'T BELIEVE THEM. SO A MONTH WENT BY AND MY TRANSMISSION JUST BLOW AGAIN 2/23/13. *TR

MY 2005 PONTIAC GRAND PRIX GXP TRANSMISSION JUST STOPPED WHILE I WAS DRIVING. I HAVE READ HOW ABOUT 225 PEOPLE HAVE DOCUMENTED ON A WEBSITE OF THEIR TRANSMISSION ISSUES WITH THIS SAME MAKE AND MODEL VEHICLE HERE HTTP://WWW.GMLS4.COM/INDEX.PHP/TOPIC,33.0.HTML WITH MY CAR ONLY HAVING AROUND 80,000 MILES AND HAS NOT BEEN DRIVEN HARD I AM REALLY DISAPPOINTED IN GM FOR MAKING A VEHICLE LIKE THIS. THE TRANSMISSION IS NOW WHINING AND I CAN DRIVE IT ABOUT TEN YARDS AND THERE WILL BE LOSE OF POWER AND IT WILL NOT DRIVE IN ANY GEAR ON THE VEHICLE. I AM VERY DISAPPOINTED AND NEED THIS CORRECTED AND WILL ULTIMATELY NEED A NEW TRANSMISSION WHICH WILL ULTIMATELY HAVE THE SAME PROBLEM DOWN THE ROAD. *TR

WHILE TRYING TO CROSS AN INTERSECTION MY CAR WOULD NOT TAKE OFF FROM STOP, TRANSMISSION THEN GRABBED AND JERKED INTO FIRST GEAR. THIS HAS BEEN A PROBLEM FOR A WHILE, IT ALSO JERKS INTO SECOND AND THIRD GEAR. SEEMS TO ONLY DO IT WHEN TRANSMISSION IS HOT. THIS SEEMS TO BE A COMMON PROBLEM WITH THIS TRANSMISSION AND WHEN I BROUGHT THE CAR TO GM DEALERSHIP THEY TOLD ME THAT I HAD TO HAVE MY TRANSMISSION REBUILT FOR AROUND $3,000, MY CAR HAD THE EXTENDED WARRANTY RUN OUT AT 72,000 MILES AND I NOW HAVE 80,000 MILES. I DID PURCHASE THE EXTENDED WARRANTY. *TR

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. WHILE DRIVING 65 MPH, THE SPEEDOMETER GAUGE FLUCTUATED. THE VEHICLE JERKED VIOLENTLY, ACCELERATED, AND DECELERATED INDEPENDENTLY. THE CONTACT HEARD A LOUD ABNORMAL NOISE COMING FROM THE ENGINE. THE FAILURE OCCURRED ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

2005 PONTIAC GRAND PRIX GXP TRANSMISSION FAILED ON THE FREEWAY AND THIS IS THE THIRD TIME THE TRANSMISSION HAS BEEN REPLACED THERE IS OBVIOUSLY SOMETHING DEFECTIVE ON THE CAR FOR THIS TO HAPPEN. *TR

I HAVE A 2005 PONTIAC GRAND PRIX GXP WITH RECURRING TRANSMISSION TROUBLE. THE TRANSMISSION HAS BEEN REPLACED BY GM AT 50% COST AND THE SAME SYMPTOMS ARE OCCURRING AGAIN. FAILURE IS EMINENT. I HAVE WHAT MOST ARE CALLING THE REV AND CLUNK SYNDROME IN MY CURRENT TRANSMISSION. MY 50,000 MILE WARRANTY ON THE NEW TRANSMISSION HAS JUST RAN OUT, BUT I HAVE RECORDS WHERE COMPLAINTS WERE FILED WITH THE DEALER WITH NOTHING FOUND. AFTER DOING SOME RESEARCH I SEE THAT I AM ONE OF HUNDREDS THAT HAVE HAD THIS SAME PROBLEM. HELP! *TR

I PURCHASED THIS USED CAR FROM A GO DEALER IN LITTLETON COLORADO. THEY SOLD ME A DEFECTIVE VEHICLE, KNOWING THE TORQUE CONVERTOR/ TRANSMISSION HAD SEVERE PROBLEMS. I COMPLAINED ABOUT IT WITHIN 24 HRS. I HAD A EXTENDED SERVICE CONTRACT ON THIS VEHICLE IT WAS IN THEIR SHOP. 3 TIMES . THEY MADE ME PAY FOR THE DIAGNOSIS IT STILL HAS THEY SAME PROBLEM AND IT IS GETTING WORSE, THEY COULD NOT DUPLICATE THE PROBLEMS AT ALL. IT SHIFTS HARD FROM 1ST TO 2ND GEAR LOSES POWER, STEERING LOCKS UP. VERY SCARY WHEN I HAVE MY 2 YEAR OLD GRANDSON IN THIS VEHICLE.... PLEASE PLEASE PLEASE HELP ME. I AM A SINGLE PARENT WITH 3 CHILDREN, AND NO CHILD SUPPORT. I TRADED MY CHRYSLER 300 M TO THIS DEALERSHIP. I SHOULD HAVE KEEP MY CHRYSLER.... PLEASE PLEASE HELP ME AND REPLACE THIS CAR. I NEED A CAR TO TRANSPORT MY CHILDREN IN. I AM DESPERATE YOU CAN NOT RELY ON THIS CAR. IF I HAVE TO WALK WITH MY CHILDREN, HOW WILL I DO THAT, I NEED A CAR TO GO TO COLLEGE, AND GET TO WORK. PLEASE I AM BEGGING YOU TO HELP ME. I HAVE THIS CAR FINANCIED ON A LOAN. PLEASE PLEASE HELP ME GET A NEW SAFE VEHICLE. I OWNED A 77 FIREBIRD FORMULA FROM 1989 TO 1997. THAT CAR WAS THE BEST, THAT IS WHY I THOUGHT I COULD TRUST ANOTHER PONTIAC. I AM SO DESPERATE FOR YOUR HELP. I CAN NOT AT ALL AFFORD THE REPAIRS THIS CAR WOULD TAKE. PLEASE REPLACE THIS VEHICLE AND HELP A MIDDLE CLASS WORKING MOTHER KEEP TRYING TO LIVE THE DREAM IN THIS WORLD.... SINCERELY, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I HAVE A 2005 GRAND PRIX GXP IN WHICH THE TRANSMISSION HAS FAILED. I TOOK THE VEHICLE IN FOR SERVICE LAST YEAR BECAUSE IT WOULD HESITATE FROM A STOP AND SLAM VIOLENTLY INTO FIRST GEAR. AT THE TIME THE DEALER COULD NOT REPRODUCE THE CONCERN AND TOLD ME TO BRING IT BACK WHEN IT GOT WORSE. MY EXTENDED WARRANTY THAT I PURCHASED SEPARATELY FROM GMPP EXPIRED ON THE 22ND OF SEPTEMBER. THIS IS A DANGEROUS FLAW WHEN YOU ARE UNABLE TO ACCELERATE WHEN PULLING INTO TRAFFIC, ESPECIALLY ON THE GXP MODEL WHICH HAS OVER 300 HORSEPOWER AND TORQUE STEER THAT IS HARD TO CONTROL WHEN IT FINALLY SHIFTS INTO GEAR. *KB

TRANSMISSION SLIPS OR SHUTTERS FROM A STOP, THEN SLAMS INTO GEAR. SHIFT FROM 1ST TO 2ND IS SLOW. SHIFTING MANUALLY WORKS OK. THIS IS A COMMON PROBLEM WITH THE GM 5.4L ENGINE 4T65E-HD COMBINATION AND HAS BEEN HAPPENING NEARLY EVERY TIME I DRIVE THE CAR. LOCAL TRANSMISSION DEALER SAYS HE SEES THIS ALL THE TIME AND IS A KNOWN ISSUE. THIS HAS BEEN HAPPENING FOR QUITE SOME TIME, BUT BECAUSE IT STARTED AFTER THE WARRANTY EXPIRED THE DEAL WOULD NOT DO ANYTHING. *TT

TRANSMISSION SHOWING SIGNS OF FAILURE DESPITE USING THE BEST SYNTHETIC TRANNY OIL AND REGULAR TRANNY OIL CHANGES. THE CAR HAS ONLY 117 000 KMS AND SLAMS INTO GEAR AFTER A SLOW START. ALSO SHUDDERS SOMETIMES BEFORE A GEAR LOCKS IN. APPARENTLY THESE ARE COMMON PROBLEMS THAT OCCUR JUST BEFORE COMPLETE TRANSMISSION FAILURE. *TR

TRANSMISSION ON MY 2005 PONTIAC GRAND PRIX GXP FAILED ON 11/23/09 AT 94,622 MILES. CAR WAS BROUGHT TO DAVE SINCLAIR BUICK/PONTIAC/GMC AND THE TRANSMISSION WAS REPLACED UNDER WARRANTY. THE SECOND TRANSMISSION STARTED BUCKING WHILE GOING UP HILLS AT 120,000 MILES. TOOK THE CAR IN AT 120,703 TO THE SAME DEALERSHIP. THEY SAID NO PROBLEM WAS FOUND WITH THE TRANSMISSION AND IT WAS IN GOOD CONDITION. THE TRANSMISSION FAILED AGAIN AT 124190 WITH LESS THAN 30,000 MILES ON IT. DAVE SINCLAIR REPLACED THE TRANSMISSION FOR $2979.19. I HAVE COMPLAINED TO GM DISTRICT MANAGERS ABOUT THIS NOT BEING AN ISOLATED INCIDENT WITH THESE TRANSMISSIONS AND THAT I SHOULD NOT BE RESPONSIBLE FOR THIS REPLACEMENT. THERE IS AN ISSUE WITH THE 4T65E-HD TRANSMISSIONS WHERE THERE IS NOT ENOUGH LINE PRESSURE GETTING TO THE TRANSMISSION DUE TO A FAULTY TRANSMISSION PAN MAGNET UNDER TECHNICAL SERVICE BULLETIN NUMBER 08-07-30-040B FROM MAY 2009. SINCE MY TRANSMISSION WAS REPLACED WELL AFTER THAT, MY TRANSMISSION SHOULD NOT HAVE FAILED AS THE SYMPTOMS WERE EXACTLY THE SAME AS WHAT SHOULD HAPPEN WITH THIS ISSUE. FURTHERMORE, THIS NEW TRANSMISSION IS DOING ALL THE SAME THINGS THE OLD ONE STARTED TO DO BEFORE IT DIED. GM HAS DENIED MY REIMBURSEMENT CLAIM 2 TIMES AND I HAVE NOT STOPPED COMPLAINING. I AM ABOUT TO DROP OFF MY CAR FOR THE THIRD TIME IN LESS THAN A MONTH BECAUSE DAVE SINCLAIR HAS NOT RESOLVED THE ISSUES WITH THIS NEW TRANSMISSION. GM SHOULD RECALL THIS TRANSMISSION AND REIMBURSE ALL PEOPLE THAT HAVE PAID FOR REPLACEMENTS. *TR

TRANSMISSION IS SLIPPING FOR SEVERAL SECONDS, THEN CATCHING WITH A SUDDEN "THUNK". APPARENTLY THIS IS A COMMON PROBLEM FOR GM CARS (PONTIAC GRAND PRIX GXP, CHEVY IMPALA SS & CHEVY MONTE CARLO SS) EQUIPPED WITH AN LS4 ENGINE AND TRANSMISSION. THIS IS A DANGEROUS SITUATION AS IT COMES AND GOES WITHOUT WARNING. SOMETIMES EVERYTHING IS FINE, BUT IF YOU ARE PULLING OUT INTO TRAFFIC AND THE PROBLEM OCCURS WITHOUT WARNING YOU MAY NOT BE ABLE TO ACCELERATE APPROPRIATELY AND RESULT IN A CRASH. *TR