The vehicle stalled while driving 40 mph. Engine hesitation at various speeds also experienced as if the car does not react to gas pedal and is not in gear. Hesitation also experienced right before engine stalled (lighting continued to work). Dealer unable to replicate issue and says the computer has not recorded the issue.

- Glenn Dale, MD, USA

: the contact stated while driving various speeds the vehicle stalled intermittently without warning. The vehicle would not start intermittently. The dealer inspected the vehicle several times but could not duplicate the problem.

- Port Saint Lucie, FL, USA

2004 Pontiac Grand Prix engine shuts down while driving. Immediate failure of power steering (impossible to make a turn while driving= scary!); electric/ electronic failure also. Then, after a complete stop, and key off ignition, the car restarts like nothing happens. The car when twice to the dealership, and did not find anything. They think that we don't know how to drive a car! this is a serious matter, and very dangerous! if someone dies from this occurrence, investigation will not concluded to this problem, but more likely to the lost of control of the driver! it happens 3 times to us already, and once with a grand-prix rental. Please check it.

- Miami, FL, USA

While driving vehicle will completely shut down. This happens at different rates of speed. It does not matter if the fuel tank is full or half full. This happened a total of 5 times. GMC is aware of the problem but does not know how to fix it. Currently, consumer has the vehicle at repair shop.

- Tinley Park, IL, USA

While driving 60 mph, the engine died. A few minutes prior to this occurring the transmission felt like the gears were dropping. When the engine died the vehicle immediately lost power steering. The consumer pulled off the road, removed the keys from the ignition, let the vehicle sit for 10 seconds before restarting. The vehicle restarted. The dealership will be contacted. The consumer was informed by other Grand Prix owners that this is a common problem with these vehicles in which a chip has to be replaced.

- Danbury, CT, USA

On May 31,2004 I went to nimnicht Pontiac @ 3919 phillips highway. Jacksonville, fl 32207. I found one vehicle, that I purchased. On Tuesday, June 8,2004, the car started having problems with acceleration, it was smoking from under the hood ( smoke boiling out from under the hood), running hot, & smelled as if it were burning. Wednesday, June 9,2004 they picked up the car. Trent stated the temperature gauge was reading high & that was unusual. Thursday, June 10,2004. Trent rogers called @ 2:30 pm to tell me that they could not find anything wrong with the car. I informed him that I did not want that car back.he would speak to john comer.@ 3:20pm, I called john comer, informed me that he did not have to make me happy. I told him I did not want to wait around, that I needed another vehicle or I wanted my trade-in car back.also stated trent rogers had not made any such comment concerning the vehicle running hot. 3:45pm, richard reese (general manager for nimnicht Pontiac) called me & informed me that they found nothing wrong with the car. I told him I did not want that car back. He said, "it does not have a cracked or warped head." That concerned me more that he even mentioned a cracked or warped head. He told me that I could come & get another vehicle off his lot if I was not satified. Informed him, none on this lot. I wanted another vehicle equivalent to the one I purchased.same color & options as the vehicle I purchased. I then called GM buyback @ 1-800-762-2737. I spoke to Ms. C.C.smith @ 3:50pm on 6/10/04. I informed Ms. Smith of the problems. She called the dealership & they told her that I had requested another car with added options.at no time did I request that. He also informed Ms. Smith that I needed to return the 24hr test drive vehicle, not me. Ms. Smith gave me a claim/reference # [xxx], but she really could not help me, other than file my claim. I called richard reese back @ 4:45pm & informed him to pick up his vehicle @ my house. Updated 07/27/2012 information redacted pursuant

- Hilliard, FL, USA