Removal Procedure

Disconnect the intake air temperature (IAT) sensor connector.

Fig 1: Disconnecting Intake Air Temperature (IAT) Sensor Connector
Courtesy of GENERAL MOTORS CORP.
Loosen the clamp at the air cleaner assembly.

Fig 2: Identifying Outlet Resonator/Duct Assembly
Courtesy of GENERAL MOTORS CORP.
Remove the push pin attachment from the outlet resonator/duct assembly to support bracket.
Loosen the clamp at the throttle body assembly.
Disconnect the PCV fresh air vent hose at the cam cover.
Remove the outlet resonator/duct assembly.

NOTE: Cover the throttle body with a shop towel. Using air, clean the base of the throttle body to prevent debris from entering the manifold when the throttle body is removed.

Fig 3: Cover Throttle Body Opening With A Shop Towel

Courtesy of GENERAL MOTORS CORP.

Cover the throttle body opening with a shop towel and use the shop air to remove any dirt at the base of the throttle body.
Disconnect the electrical connector at throttle body.

Fig 4: Disconnecting/Connecting Throttle Body Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Remove the throttle body bolts.
Remove the throttle body.

IMPORTANT: The throttle body-to-manifold gasket is not reusable.

Fig 5: Removing/Installing Throttle Body Gasket

Courtesy of GENERAL MOTORS CORP.

Remove the gasket and discard.

NOTE: Cover the intake manifold opening with a shop towel whenever the throttle body is removed to prevent foreign material entry.

Fig 6: Installing Shop Towel At The Throttle Body Opening

Courtesy of GENERAL MOTORS CORP.

Block the intake manifold opening with a clean shop towel to prevent dirt from entering.