Removal (4.2L)
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Remove air cleaner resonator from top of engine. Disconnect EVAP canister purge line from throttle body. Disconnect throttle body harness connector. Remove 4 throttle body-to-intake manifold bolts. See Figure. Remove throttle body. Remove flange gasket and discard.