Removal Procedure

Fig 1: Loosening Air Cleaner Outlet Duct Clamps

Courtesy of GENERAL MOTORS CORP.

NOTE: Handle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.

Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.
Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
Partially drain the cooling system in order to allow the hoses at the throttle body to be removed. Refer to Draining and Filling Cooling System (LP1, LY7) or Draining and Filling Cooling System (LS6) in Engine Cooling.
Lower the vehicle.

IMPORTANT: Cover or plug any openings when servicing the throttle body in order to prevent possible contamination.

Loosen the air cleaner outlet duct clamps (1, 2).
Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .

Fig 2: View Of Air Control Valve Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the air control valve electrical connector.

Fig 3: Identifying TP Sensor Electrical Connector

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Disconnect the throttle position (TP) sensor electrical connector.
Disconnect the crankcase ventilation hose from the throttle body.

Fig 4: View Of Throttle Body

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Disconnect the coolant hoses from the throttle body.
Remove the throttle body attaching bolts.
Remove the throttle body and the gasket.
IMPORTANT: Do not reuse the throttle body gasket. Install a new gasket during assembly.
Discard the throttle body gasket.
Inspect the crankcase ventilation hose and the tube. Replace any damaged components.