Removal Procedure

CAUTION: Do not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.
Use care in cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as sharp tools may damage the gasket surfaces.

Fig 1: HO2S & ETC Electrical Connectors & CPA Retainer

Courtesy of GENERAL MOTORS CORP.

Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
Disconnect the electronic throttle control (ETC) electrical connector (2).

Fig 2: Heater Inlet & Outlet Pipe Nuts

Courtesy of GENERAL MOTORS CORP.

Remove the heater inlet and outlet pipe nuts (1).
Remove the heater inlet and outlet pipe bracket from the throttle body studs. Reposition the pipes.
Remove the throttle body bolts/studs.
Remove the throttle body.
Remove the throttle body gasket.