2005 Pontiac Grand Prix transmission problems

Filed Aug 2, 2022 · Transmission · 100,000 miles · KS

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.

Filed Sep 3, 2016 · Engine, Transmission · 134,300 miles · MO

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.

Filed Oct 30, 2015 · Transmission · 148,000 miles · AR

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.

Filed Oct 6, 2015 · Transmission · 85,000 miles · MI

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.

Filed May 18, 2015 · Driver assistance, Transmission · 118,000 miles · OH

My car started having very erratic shifting, and revving.

Filed Sep 19, 2014 · Transmission · UT

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.

Filed Jul 9, 2014 · Steering, Transmission · 80,000 miles · CA

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.

Filed Jun 17, 2014 · Driver assistance, Engine · 140,000 miles · MN

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).

Filed Mar 9, 2014 · Transmission · 68,300 miles · MI

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.

Filed Nov 3, 2013 · Transmission · 79,000 miles · OH

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.