Removal (4.8L, 5.3L & 6.0L)
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Throttle Control (ETC) and Throttle Position (TP) sensor is not serviceable separately. Throttle body and TP sensor must be serviced as a complete assembly. See THROTTLE BODY under AIR INDUCTION SYSTEMS.