2005 PONTIAC GRAND PRIX Power Train 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.

Mileage: 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.

Mileage: 134,300

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.

Mileage: 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.

Mileage: 85,000

MY CAR STARTED HAVING VERY ERRATIC SHIFTING, AND REVVING.

Mileage: 118,000

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.

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE STEERING WHEEL SEIZED. THE CONTACT MENTIONED THAT WHEN ATTEMPTING TO START THE VEHICLE, THE KEY WAS DIFFICULT TO TURN AND DIFFICULT TO SHIFT INTO ANOTHER GEAR. IN ADDITION, THE CONTACT STATED THAT WHEN DRIVING, THE KEY WOULD RELEASE FROM THE IGNITION AND THE VEHICLE WOULD DECELERATE. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE RACK AND PINION NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 80,000 AND THE CURRENT MILEAGE WAS 119,300.

Mileage: 80,000

VEHICLE STARTED DISENGAGING CRUISE CONTROL AND TRACTION CONTROL , VEHICLE THEN STARTED JERKING/SHIFTING HARD AND OVERHEATING, FOLLOWED BY VEHICLE SHIFTING FROM ONE SET POSITION OF DRIVE TO NEUTRAL, TOOK INTO SHOP TO LOOK AT TRANSMISSION WAS TOLD JUST A DIRTY SENSOR , HAD SENSOR CLEANED , ABOUT A MONTH LATER SAME THING, HAD IT CLEANED AGAIN AND THEN DEC 2013 THE TRACTION CONTROL AUTO DISENGAGED AGAIN AND THEN ONE DAY IT TURNED ITSELF ON AGAIN, NO THERE'S A COOLANT LEAK ISSUE AND OIL LEAK AND CHECK ENGINE LIGHT ON FOR THE CATALYTIC CONVERTER...[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

Mileage: 140,000

I LEASED MY 05 GRAND PRIX GT NEW IN 2005 AND PURCHASED IT IN 2008 AFTER I PURCHASED THE VEHICLE I TOO NOTICED THE CHANGE IN SHIFTING GEARS LOSS OF POWER OR NO MOVEMENT THEN ALL OF A SUDDEN THE TRANSMISSION WOULD POP INTO GEAR WHEN THE VEHICLE HAD APPROX 68K MILES. I HAD TAKEN THE VEHICLE TO SEVERAL DEALERS, AND THEY TOLD ME EITHER THEY COULD NOT REPLICATE THE PROBLEM OR THEY SOLD ME ON SOMETHING ELSE INCLUDING TRANSMISSION FLUSHES. ONE MECHANIC INFORMED ME QUIT AS FEW VEHICLES BEEN IN FOR COMPLAINING ABOUT THE SAME THING. THERE SEEMS TO BE A PROBLEM IN THE DESIGN OF THESE TRANSMISSION. *TR

Mileage: 68,300

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

Mileage: 79,000

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.

Mileage: 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

Mileage: 78,600

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH, THERE WAS A SUDDEN LOSS OF ACCELERATION POWER. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE TRANSMISSION NEEDED TO BE REPLACED. ALSO, THE CONTACT MENTIONED THAT THE VEHICLE WAS TAKEN TO A DEALER FOR THE SAME FAILURE ON THREE OCCASIONS. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE APPROXIMATE FAILURE MILEAGE WAS 36,000 AND THE CURRENT MILEAGE WAS 86,000. *TR

Mileage: 36,000

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

Mileage: 140,000

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

Mileage: 75,000

MY 2005 PONTIAC GRAND PRIX GXP WOULD OFTEN LOSE SPEED IN CURVES, CLIMBING HILLS, OR AT HIGH RATES OF SPEED. I TOOK IT TO A GM DEALER AND WAS DIAGNOSED WITH TRANSMISSION PROBLEMS. I WAS QUOTED ONE PRICE FOR TRANSMISSION, LABOR, AND RADIATOR REPLACEMENTS, BUT ENDED UP PAYING OVER $4000. GWATNEY IN NORTH LITTLE ROCK, AR HAS A HORRIBLE SERVICE STAFF. THEY WERE NOT WILLING TO WORK OUT A DEAL EVEN AFTER INFORMING THEM I WAS QUOTED A DIFFERENT PRICE. THEY THREATENED TO CHARGE ME ADDITIONAL STORAGE FEES IF I DIDN'T PICK UP MY CAR. I EVENTUALLY PAID, BUT I WROTE IN DISPUTE OF PRICE ON THE RECEIPT. HERE I AM 9 MONTHS LATER WITH THE SAME PROBLEM! GO FIGURE. *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

Mileage: 80,000

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

TORQUE CONVERTER FAILED CAUSING ABRUPT STOP IN ACCELERATION WHILE MERGING ON EXPRESSWAY. THE DAMAGE TO THE TORQUE CONVERTER ALSO CAUSED DAMAGE TO THE TRANSMISSION AS WELL. *TR

Mileage: 64,000

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)

Mileage: 98,000

TL* THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE CONTACT STATED THAT THE TRANSMISSION FAILED WHILE DRIVING. THE CONTACT STATED THAT LITTLE PIECES OF METAL WERE SCATTERED AS A RESULT. NEITHER THE DEALER NOR THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. A LOCAL MECHANIC REPLACED THE TRANSMISSION. THE FAILURE MILEAGE WAS 70,000 AND THE CURRENT MILEAGE WAS 85,000.

Mileage: 70,000

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

Mileage: 52,000

ON 1/23/12, WHILE BACKING OUT OF A PARKING SPACE ON A LEVEL LOT, MY 2005 PONTIAC GRAND PRIX LUNGED FORWARD. I IMMEDIATELY HIT THE BRAKE. THE CAR WAS IN REVERSE NOT DRIVE! I ATTEMPTED TO BACK OUT AGAIN AND THE SAME THING HAPPENED! THE SECOND TIME IT LUNGED FORWARD SO QUICKLY I WAS AFRAID THE CAR WOULD NOT STOP, EVEN WITH THE BRAKE FULLY APPLIED. THIS SECOND LUNGING INCIDENT DAMAGED/CRACKED THE AIR DAM, AS IT WAS NOW WEDGED AGAINST THE CONCRETE PARKING SPACE DIVIDER. AT THE SAME MOMENT, THE DASHBOARD FLASHED/LIT UP LIKE A CHRISTMAS TREE....AND THE ENGINE STALLED. I PUT THE CAR IN PARK AND TURNED THE IGNITION OFF..THEN GOT OUT TO INSPECT THE DAMAGE. UPON RE-ENTERING THE CAR, IT WOULD NOT START! IT FINALLY RESTARTED ON THE THIRD ATTEMPT AND I WAS FINALLY ABLE TO BACK OUT OF THE PARKING SPACE. *TR

Mileage: 93,580

TL* THE CONTACT OWNED A 2005 PONTIAC GRAND PRIX. WHEN THE CONSUMER EXITED THE VEHICLE, IT ROLLED BACKWARDS AND CRASHED INTO ANOTHER VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING BUT THE TECHNICIANS WERE UNABLE TO DIAGNOSE THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 5,000. UPDATED 02/14/12*LJ

Mileage: 5,000

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

Mileage: 74,000

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

Mileage: 74,000

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 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

Mileage: 60,000

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

Mileage: 120,703

1. EVENTS LEADING UP TO FAILURE = REGULAR DAY-TO-DAY VEHICLE USE. 2. FAILURE = TRANSMISSION, WHEN ACCELERATING FROM A STOP, TRANSMISSION SEEMS TO SLIP AND THEN SLAM INTO GEAR. ALSO, OCCASIONAL HARD SLAM INTO 2ND HEAR UNDER PART THROTTLE. 3. WHAT WAS DONE TO CORRECT FAILURE = REPAIR SHOP INSPECTION WITH PAN REMOVED 1-YEAR AGO, NOTHING FOUND. PROBLEM STILL EXISTS.. *TR

Mileage: 37,000

TRANSMISSION FALIURE. *TR

Mileage: 34,046

MY CAR AT ONLY 54K MILES, TRANSMISSION FAILED, CAUSING TO LOOSE POWER IN TRAFFIC. I HAD THE TRANSMISSION REBUILT ($2400), 8 MONTHS LATER IT FAILED AGAIN ($1200), 2 MONTHS LATER, FAILED AGAIN ($0-WARRANTY). MECHANIC FINALLY FIGURED OUT IT WAS SOME PRESSURE RELIEVE VALVE ON THE TRANSMISSION, CAUSING PRESSURE TO BUILD UP, CAUSING THE TORQUE CONVERTER TO EXPLODE, SENDING DEBRIS THROUGHOUT THE TRANSMISSION. I DID NOT GO TO DEALER AS CAR FOR THAT MODEL YEAR WAS OUT OF WARRANTY, BUT WENT TO TRANSMISSION SHOP WHO HAS BEEN IN BUSINESS FOR ABOUT 30 YEARS. I WROTE TO GM, BUT GOT NO MONETARY SATISFACTION. MANY PEOPLE I'VE READ ABOUT ONLINE WITH THIS TYPE OF TRANSMISSION HAVE HAD SIMILAR PROBLEMS. I'VE NEVER HAD TRANSMISSION TROUBLE IN ALL THE CARS I'VE EVER OWNED. IT WOULD SEEM THERE IS A DEFECT IN THIS MODEL, AND WOULD LIKE TO RECOUP THE MONEY SPENT ON THIS ISSUE. IT SEEMS IT'S ON GM MODELS WITH A V8 FRONT WHEEL DRIVE TRANSMISSION. LIKE THE PONTIAC GRAND PRIX GXP, AND MONTE CARLO SS, BUICK LUCERNE V8. *TR

Mileage: 54,000

MY TRANSMISSION HAS BLOWN ONCE, AND THE REPLACEMENT (FACTORY WARRANTY) IS ACTING UP AND GETTING READY TO GO AGAIN. (EXCESSIVE SLIPPAGE, GRABBING, AND FAIL TO ENGAGE). I AM NOT AN AGGRESSIVE OR SPIRITED DRIVER, SO THERE IS NO REASON TO HAVE TRANSMISSIONS FAIL THIS OFTEN. IN RESEARCHING ONLINE, IT APPEARS THIS IS COMMON WITH THIS VEHICLE/ENGINE COMBO. *TR

Mileage: 33,000

I OWN A 2005 GRAND PRIX GXP LS4 V8 WITH 60KMI. THE TRANSMISSION HAS SHUDDERED ON THE 1-2 SHIFT AND SOMETIMES DELAYED ON THE 2-3 SHIFT SINCE 40KMI. EVERY TIME I HAVE TAKEN THE CAR IN OUT OF WARRANTY, AND EVEN WHILE IT WAS IN WARRANTY, THE PROBLEM COULD NOT BE REPLICATED. I KNOW THE 4T65E-HD TRANSMISSION IN THIS CAR IS SUBJECT TO FAILURE AS I AM A MEMBER OF MANY ONLINE FORUMS THAT HAVE CARS WITH THE LS4 V8 AND 4T65E-HD AND THE TRANSMISSION FAILURE IS THE NUMBER ONE TOPIC OF DISCUSSION. IT WILL LEAVE YOU STRANDED WITHOUT WARNING, AND MAY BREAK IN THE MIDDLE OF TRAFFIC CAUSING A DANGEROUS SITUATION TO BE IN. IT SEEMS TO BE TOO MUCH FOR A TRANSMISSION THAT WAS DESIGNED TO BE MATED TO A V6 ENGINE TO BE MATED TO A 5..3L V8. *TR

TL*THE CONTACT OWNS A 2005 PONTIAC GRAND PRIX. THE VEHICLE HAS BEEN EXPERIENCING TRANSMISSION FAILURE SINCE JUNE OF 2007. WHILE DRIVING 15 MPH, THE VEHICLE JERKS INTO GEAR AND SURGES UNEXPECTEDLY, MAKING IT DIFFICULT TO CONTROL. THE CONTACT TOOK THE VEHICLE TO TWO DIFFERENT DEALERS BECAUSE THEY COULD NOT DETERMINE THE CAUSE OF THE FAILURE. THE FAILURE MILEAGE WAS 23,000 AND CURRENT MILEAGE WAS 33,000.

Mileage: 23,000

I HAVE A 2005 PONTIAC GRAND PRIX SOMETIMES WHEN I PRESS ON THE PEDAL THE CAR HESITATES. THERE IS ALSO A WHINING NOISE COMING FROM UNDER THE CAR. AT FIRST I THOUGHT IT NEEDED A TUNE UP SO I HAD THE SPARK PLUGS CHANGED. I THOUGHT THIS WOULD CORRECT THE PROBLEM, BUT THE CAR CONTINUES TO STALL. JUST THE OTHER DAY I WAS DRIVING AND THE CAR WOULD NOT GO. IT FELT LIKE THE TRANSMISSION WAS SLIPPING. SO I TOOK IT THE SHOP AND THEY SAID I HAVE A PROBLEM WITH MY TRANSMISSION WHICH I ALREADY KNEW THAT. I HAVE TALKED TO OTHER PEOPLE WITH THIS SAME CAR AND THEY HAVE ALSO HAD TRANSMISSION PROBLEMS. I WOULD LIKE TO KNOW IF PONTIAC IS AWARE OF THIS OR DID I GET A BAD CAR. *TR

Mileage: 70,580

I TOOK MY CAR IN TO AN CERTIFIED AUTOMOTIVE CENTER TO RECEIVE A DIAGNOSTIC CHECK BECAUSE THE CAR HAD COMPLETELY STOPPED ON THE BAY BRIDGE AND I COULD NOT ACCELERATE. THANK GOD I WAS COMPLETELY OVER INTO THE LEFT HAND LANE BECAUSE THE STEERING WHEEL HAD COMPLETELY LOCKED. THE AUTOMOTIVE CENTER COULD NOT FIND ANYTHING WRONG BUT DETECTED THAT THE MODEL AND YEAR HAD A RECALL ON INTERGRATED CIRCUIT CHIP DAMAGE THAT CONTROLLED THE CAR. SO THEY TOLD ME TO GO BACK TO THE DEALERSHIP FOR THAT RECALL SO WHEN I WENT BACK TO THE DEALER THEY STATED THAT THERE WAS NO RECALL. SO I HAD TO PAY AN ADDITIONAL FEE TO GET MY CAR CHECKED BY THE DEALER. SINCE I PURCHASED THIS VEHICLE IN JULY 2005 I HAVE HAD SEVERAL PROBLEMS WITH TRANSMISSION, SENSORS, FUEL FILTER AND HAD TO PUT ON ROTORS TWICE SINCE I PURCHASE MY MILEAGE IS 69,000. I AM ASKING FOR INVESTIGATIONS ON THIS CAR TO SEE WHETHER OR NOT I WAS SOLD A LEMON. *JB

Mileage: 69,381

DT*: THE CONTACT STATED AFTER ACCELERATING TO 65 MPH TO CHANGE LANES, THE VEHICLE SPEED CONTINUED TO INCREASE AFTER THE FOOT OF THE CONTACT WAS REMOVED FROM THE ACCELERATOR AND BEGAN DEPRESSING THE BRAKE PEDAL. THE TIRES CONTINUED TO SPIN IN A FORWARD MOTION. THE TRANSMISSION WAS PLACED INTO NEUTRAL IN ORDER TO STOP THE VEHICLE, BUT THE ENGINE CONTINUED TO RACE UNTIL THE ENGINE WAS TURNED OFF. WHEN THE VEHICLE WAS RESTARTED, THE VEHICLE DROVE NORMALLY, BUT THE BRAKES HAD BEEN DAMAGED WHEN STOPPING THE VEHICLE. THE SERVICE DEALER REPAIRED THE BRAKES, BUT WAS UNABLE TO DETECT THE PROBLEM. THE MANUFACTURER WAS NOTIFIED. THE 3RD GEAR OF THE AUTOMATIC TRANSMISSION BURNED OUT, CAUSING THE VEHICLE TO ACCELERATE BADLY. THE VEHICLE WAS SERVICED BUT THE VEHICLE CONTINUED TO HAVE PROBLEMS AND STALLED WHEN THE VEHICLE SPEED WAS REDUCED TO 45 MPH. THE VEHICLE WAS COASTED TO A STOP AND THEN TAKEN TO THE SERVICE DEALER.

Mileage: 32,400

DT*: THE CONTACT STATED WHILE DRIVING 45 MPH, THERE WAS A LONG LAG IN THE VEHICLE ACCELERATION. THE VEHICLE WAS PULLED TO SHOULDER, SHUT OFF, AND RESTARTED. WHEN THE VEHICLE WAS SHIFTED INTO GEAR, IT WAS NOT ABLE TO BE MOVED IN ANY DIRECTION. THE VEHICLE WAS TOWED TO A SERVICE DEALER WHO WAS UNABLE TO DETERMINE THE PROBLEM. LATER ON THAT SAME DAY, THE SAME PROBLEM OCCURRED A SECOND TIME. THE VEHICLE WAS TAKEN TO A SECOND DEALER WHO DETERMINED THAT THE TRANSMISSION HAD LOCKED UP DUE TO THE HEAT. THE DEALER INFORMED THE CONTACT THAT THEY WOULD BE UNABLE TO REPAIR THE VEHICLE DUE TO THE CONTACT PURCHASING THE VEHICLE FROM A DIFFERENT DEALER. THE VEHICLE WAS THEN TAKEN BACK TO THE ORIGINAL DEALER, WHO REBUILT THE AUTOMATIC TRANSMISSION. THIS WAS THE THIRD TIME THE TRANSMISSION HAD BEEN REBUILT DUE TO THE SAME ISSUE. UPDATED 10/17/2006 - *NM

Mileage: 40,342

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)

Mileage: 4,200