Throttle Position Sensor
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
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.