The contact owns a 2006 Pontiac Grand Prix gxp. The contact stated that while driving 55 mph, the vehicle decreased speed and lost power. The vehicle was inoperable and no warning lights were illuminated. The vehicle was taken to a private mechanic who diagnosed that the failure was with the transmission, which was not suitable for the engine size. The dealer was notified who stated that in order to diagnose a test on the vehicle, the vehicle had to be towed to an authorized dealer. The manufacturer was notified of the failure who filed a case on the contact's behalf (case number: 71-1090706145). The VIN was not available. The failure and current mileage was 85,000.

- Sacramento, CA, USA

The transmission failed. Was told this was a problem that occurs in GM cars. Should be recall on cars in transmission that failed. Cost $1200 to repair.

- Trenton, FL, USA

When taking off from a stop, the transmission harshly jerks into first gear. Sometimes when coming from a stop, it feels the same as a manual transmission - holding the clutch down. I have had a few close calls as the car sometimes fails to give out full power from a stop. I am afraid that I will get into an accident because of this. GM cannot find any problem.

- Sacramento, CA, USA

The transmission failed and needs to be replaced.

- Wellesley, MA, USA

I have a 2006 Pontiac Grand Prix gxp, I have had all the maintenance done on this car since I owned it. The transmission went out on this car at 80,000 miles and from what I have been reading this has been a problem with all the gxp's that have comeout and GM is not willing to recall this problem or even fix the problem they know about. GM should take responsibility and fix this for each customer. I have seen where people have bought the car and at 39000 miles the transmission is slipping. This is very poor customer service by GM and they should have to have all the gxp models recalled and the transmissions replaced. Thank you

- Bristol, PA, USA

2006 Pontiac Grand Prix gxp. 104K miles. The transmission is going out again. Slippage in reverse and drive. This is the 3rd GM/serta transmission. The original stock transmission failed and 39K miles. 2nd at 71K, 3rd at 88K. Car is not driven hard and has never seen the race track. Trans fluid and filter changed every 10K miles.

- Hinesville, GA, USA

Auto transmission is shifting hard and slipping. Shifts hard from 3 to 4 and will slip just driving down road at road speed. Getting worse day by day, and much worse when cold. Started as a whinning noise about a month ago. I have been told by GM dealer that transmission will probably need rebuilt. I am original owner, car has never been driven hard.

- Xenia, OH, USA

Bought a "nice" used Pontiac Grand Prix gxp in 2008 (an 06 model). The car only had around 17,000 miles on it. This car has been the biggest money pit ever. I am so disappointed with this vehicle. I have prided myself in buying american made vehicles, but not anymore! first of all, the tire sizing and the price of the tires, ridiculous! the power steering line broke, and of course it wasn't the line that was covered under recall, there has always been a noise in the front end, especially going at a slower speed and over bumps, kind of popping, I've always felt that there was something wrong in the front end. In Oct. 2010, the hubs and bearings were replaced, they were still under warranty, but we had to pay a deductible, which was quite a bit, then in July 2011, with 60,000 some odd miles on it, the traction control light, the ABS light came on, took it to the dealership, they say it's a sensor, in the left hub (that we just had changed, less than a year ago), the warrant had ran out on it, so we paid almost 500 to replace that, then surprise, surprise, it has happened again the lights are back on! also, sometimes when I accelerate at say a stop sign or stop light, there's sort of a "grabbing" and the car doesn't want to go, like it could be the transmission slipping. These are actually just a few of the things that I've had go wrong, there's been odds and ends things that of course have cost a fortune to fix, everything on this car is...oh, the tie rod end, that was something else that had to be replaced...I could go on and on money pit. I want to get rid of it, but it's one of those things, I've got too much invested in it..I'd never get out of it what I need..no wonder they no longer produce Pontiac. From the things I've read, it seems that I am not the only person who has had trouble out of this vehicle. It seems as though there should have been alot more recalls.

- Pedro, OH, USA