Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2007 Pontiac Grand Prix owners, lightly cleaned up (personal details are redacted by NHTSA).
I have same problem as others. Have been able to start car sometimes by putting it in neutral. Several years ago I left the car with our son to see if he could figure out the problem because my wife quit driving the car after being stranded a few times. When using blinkers the high beam would come on. It has a roaring sound like a wheel bearing going out.the key fob doesn't work. I've been told the BCM body control module could be causing problems. Had estimate of $500 to replace and program new BCM.. We have towed car home after going to store. I used to drive otr so we got a second vehicle to drive. After reading other posts on this car 4/4/2021 I don't think I want to put more money into it. Especially when I've read GM techs can't fix the problems.. Once the vacuum line to brake booster came off when my wife was going down hill. I put the line back on, it hasn't done that again. …
Tl* the contact owns a 2007 Pontiac Grand Prix. While approaching an intersection, the vehicle seized without warning. The contact managed to move the vehicle to the shoulder of the road with the help of a bystander. The contact believes the key fell out of the ignition. The power steering and brakes went out, place the gear into park. The vehicle was taken to an independent mechanic who was unable to duplicate the failure. The vehicle was not repaired. The dealer and manufacturer were not made aware of the failure. The failure mileage was approximately 52,000.
Crank shafts position sensor causes the engine to shut off while driving down the road. Resulting in the loss of power steering, and power brakes. This occurs at all speeds from stop and go traffic at less than 5 MPH to highway speeds of 70 MPH +. This is a very dangerous issue. Adding the recall piece to the key did nothing to remedy the issue. This has been occurring for 2 years now.
Another gxp transmission issue... There seems to be a very high number of issues w/the gxp transmissions considering how few they sell since it's the top of the line version w/the v8 engine. Seems like they tried to use the transmission from the lower models w/the v6 engines & it's not holding up to the engine power. When is there finally going to be a recall for the design issue/poor quality? I had the dealership service the transmission at ~50K miles as preventative maintenance & it was running fine at the time. I don't spend a lot of time at high speeds on the highway & don't drive it hard, but the transmission failed after ~72,200 miles. Early feb 2013, the transmission started slipping for a fraction of a second ~3rd to 4th. Brought it to the dealership, but the technician did not notice anything unusual during the test drive & said to bring it back if it got worse. …
Update on 10192218 and 10192426. 2007 Grand Prix gxp dealer attempted repair transmission. Per gms tech support, dealer pulled transmission, replaced final drive gears , and bearings. Problem not resolved. Dealer then replaced transmission, but with GM re-manufactured"part. Also, dealer stated they could not obtain a brand new transmission for any repair because the factory saved new transmissions for the production line vehicles. 15 days at dealer. And was told car ready for pick-up. Drove the car around the parking lot and noticed gear shift did not lock into place in any gear but manual. Reverse, didn't work, and transmission shifted itself into neutral going down an incline. Brought vehicle immediately back to dealer, who had to replace both front Bridgestone tires due to out of round and irregular wear. …
Purchased 2007 Pontiac Grand Prix gxp new, approx 3 months ago. At 500 miles, loud metal-on-metal "clanking" noise began. Traced noise to transmission bell housing. Taken for service at 1,500 miles, requested service writer listen to the noise and take care of problem. Returned as "no problem found". Again, took vehicle to dealer for same noise, along with harsh and sudden shifts around 25-30mph. Dealer attempted to return vehicle, stating it was "normal, and covered by a TSB". I refused to accept the vehicle. Dealer gave me a very hard time about covering a loaner vehicle, even though this was 2nd time to dealer with same complaint, unresolved, with just over 3,200 miles on odometer. Dealer called GM. Mechanics now have to tear out the transmission to "attempt a diagnosis". Apparently, there May be a "clutch pack issue". Vehicle still in service after 4 days, no diagnosis yet. …
Update regarding original odi case number: 10191952. Car has now been in service for ten days. Dealer stated GM "aware of a potential defect" in the transmission, in the final drive gear(s). Dealer replaced two gears and a bearing in the transmission. Pursuant to discussion with dealer representative today, repair did not correct problem. Transmission is now making "clanking" noise at various speeds instead of just at idle. No details received regarding harsh shift, just that dealer felt transmission repair was "unacceptable". Dealer has ordered a replacement transmission from GM. Note: dealer, ferman at cypress creek in lutz, fl has been quite accommodating and rudy schmidt, service director, has made this ordeal much more tolerable. This appears to be a design or manufacturing flaw, which GM did not correct prior to delivery.
On 12/12/13, car wouldn't accelerate properly in 1st gear when gas pedal was pushed and transmission shifted roughly through remaining gears. Transmission fluid temp was 220+ degrees. Took car to GM dealership, was told TCM needed to be replaced, along with transmission fluid flush and refill. Did as recommended. On 2/4/14, at a traffic light, attempted to accelerate when light turned green and car wouldn't move in any gear. Trans fluid temp was fine. No check engine light or other warnings. Called OnStar, had it towed to the same GM dealership, and was told that transmission pan was filled with metal flakes. There were no metal flakes as of 12/12/13, and no issues between those dates. Bought a rebuilt transmission and picked up car 3/12/14. Filing my complaint due to the excessive number of complaints about this specific transmission.
Vehicle had symptoms of transmission problems. Dealership could not find any, serviced it with a transmission flush since did not know what else to do. The car was shifting roughly at highway speed. Could not find anything wrong with transmission, said it was likely the displacement on demand, and shifting between 4cyl and 8 cyl. It is now shifting hard, not each time driven, but most times. I own 2 of these cars and the transmission on the 2006 just completely failed, and I recognize now that the problem is the transmission, not the dod. I see far too many complaints with the particular transmission croaking way before it should. I am afraid this 2007 is going to require the same fix, a factory rebuilt transmission, which is 3,000.00. Please, please force a recall as these transmissions should not be failing at the rate they are.
New owner of pontica Grand Prix. Never owned a pontica, purchace for wifey red color she like im a pro mechanic 20 years or better and had did the research heard about trans in pont. Failure also door acturator been bad could bet the price 2 months later trans b/o (bad operation) I drop pan and found the foward band broken it look like it was stop welded on and broke right after the spot weld should have been cast one pieces but no! (I believe defect in manufacturing) should have been casted I love USA but if they dont stand-up its nissian for me. I replace trans. Lkq low miles 25,000! Will be trading for guest what wont be GM! You stop weld body parts not trans parts by GM they should'nt got bail out not just pontica the trans 4t65e are defects 2007 uplanders ect if u have a 3.8 look out GM messed up this one.
Transmission complaints in other Grand Prix years
Frequently asked questions
How common are transmission problems on the 2007 Pontiac Grand Prix?
NHTSA has 29 complaints about the transmission & drivetrain of the 2007 Pontiac Grand Prix, 13% of the model year's 220 complaints. The component named most often is automatic transmission (10 mentions).
Is there a recall for 2007 Pontiac Grand Prix transmission problems?
No. NHTSA lists no transmission & drivetrain recall for the 2007 Pontiac Grand Prix, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2007 Pontiac Grand Prix transmission problems start?
Half of the complaints with a recorded mileage happened before about 72,000 miles, and 19% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.