Automatic Transmission problems of the 1999 GMC Yukon

The contact owns a 1999 GMC Yukon. On April 20, 2009, the vehicle would not accelerate past 20 mph. There had been no prior failures with the transmission since purchasing the vehicle used in January of 2009. In addition, there were alignment issues that caused the tires to explode, tie rod failure, brake failure, and the fuel gauge displays the incorrect amount of fuel in the vehicle. The failure mileage was 100,000. Updated 5/27/09 the upper and lower ball joints, lower ball joints, idler arm, steering gear, rack and pinion were all replaced. Updated 06/02/09.

Transmission shifts hard from 1st to 2nd. Transmisson does not shift to 4th (od). Intermittent problem but happens most often after driving at freeway speeds or using engine braking on downgrades by shifting into lower gears. Seems to be more frequent in warm/hot weather. Vehicle is always lightly loaded.

Had taken vehicle to dealer for brake service on front disc brakes due to wear on disc. Work after 15000 miles had to be performed again due to disk wearing out. Consumer believed that brakes were not heavy enough for vehicle. Disc warped causing vibrations and brake failure. The disc was turned a t 15k miles and was replaced at 28k. Transmission does not hold on hills. Front end was leaking due to front pinion seal failure . .

The vehicle was placed in reverse but it would not move. It was placed back in park and left running in my garage. I got out of the vehicle in order to look over the extierior for problems; none found. I then kicked/pushed the back bumper and immediately heard a clunk, the vehicle was thrown into reverse and headed at me. It caused a great deal of damage to the vehicle, my other vehicle parked in the garage and my house. I was almost run over by this driver-less vehicle. I do have a witness that saw the vehicle charging at me.

While driving on the highway all of a sudden vehicle cut off and stalled. Contacted dealer.

Transmission was stalling.