GMC Sierra Throttle Bodies

In 1998, General Motors unveiled the successor of their GMC C/K truck, the GMC Sierra. The vehicle was based on the corporate GMT800 platform in the light-duty version, and heavy-duty Sierras featured the GMT880. This full-size pickup came powered with a Vortec engine, both V6 and V8 configurations were available. In the first generation, this truck could be ordered with a classic five-speed manual gearbox, though for the second generation and up, this transmission option was discontinued in favor of the new six-speed automatic. The upscale version of the truck appeared in 2000 and was marketed as the C3, and by 2002, the name was changed to the Sierra Denali.

The throttle body is an important part of the vehicle’s fuel delivery system and its function is to control the airflow into the fuel-injected engine. Usually it is located between the intake manifold and the air cleaner, and has got a valve which operates in accordance with the position of the accelerator pedal. When this part does not perform properly or is broken, you may get poor performance and inadequate gas mileage, or even engine breakdown. In our catalog of GMC Sierra throttle bodies, you will find OE-quality components to restore your full-size pickup.