The throttle valve in the throttle body has a shield riveted to it and the shield sticks to the throttle body housing. When you step on the gas pedal it causes the shield to be pull away from the throttle valve, this causes metal fatigue at the rivets the shield then brakes loose and falls into the intake manifold causing the engine to run at about 4000 RPM and very fast down the road. A new throttle body from GM cost about$739 plus labor.

- Pensacola, FL, USA

The throttle body assembly malfunctioned and jammed while the consumer's son was driving on the highway which caused unwanted acceleration. The driver put the gear into neutral, secured the emergency brake and turned the ignition off. The failed part remained in the consumer's possession. The rivets on the half moon deflector attached to the lower throttle body butterfly cracked and caused the butterfly to jam open, which kept the vehicle at high speed. The dealer stated the failure was caused by metal fatigue.

- Washington, DC, USA

The metal plate on the throttle body assembly cracked causing my 1997 Oldsmobile Bravada to accelerate continuously to a speed of 100 miles per hour. The mechanic described the result as red lining. This occurred while driving on the highway. Breaking only slowed the car down momentarily.

- Baltimore, MD, USA

Leased vehicle; while driving and at intersection, when stepped on the accelerator, it accelerated at full speed. Vehicle was involved in one car accident, frontal impact. Dealer contacted and GM contacted, they cannot remedy the problem. Vehicle in shop. Provide further information. *akthe dash brake light indicator would come on when the steering wheel was adjusted, the light also came on intermittently while driving. While making a right turn the vehicle suddenly accelerated causing loss of control and resulting in the vehicle hitting a center divider in the street *

- Lincoln, NE, USA