Removal Procedure

Partially drain the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.
Remove the air cleaner intake duct. Refer to Air Cleaner Intake Duct Replacement .
Disconnect the idle air control (IAC) valve electrical connector.

Fig 1: View Of IAC Valve Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the throttle position (TP) sensor electrical connector.

Fig 2: Disconnecting TP Sensor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the mass air flow (MAF) sensor electrical connector.

Fig 3: Disconnecting MAF Sensor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Remove the accelerator controls cable bracket. Refer to Accelerator Controls Cable Bracket Replacement .
Remove the electrical wiring harness (2) from the accelerator controls cable bracket (3).

Fig 4: Removing Electrical Wiring Harness

Courtesy of GENERAL MOTORS CORP.

Remove the vacuum hoses from the throttle body.

Fig 5: Removing Vacuum Hoses From Throttle Body

Courtesy of GENERAL MOTORS CORP.

Remove the throttle body support bracket bolts.
Remove the throttle body support bracket.

Fig 6: Removing Throttle Body Support Bracket

Courtesy of GENERAL MOTORS CORP.

Remove the throttle body nuts.
Remove the throttle body assembly.

NOTE: 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.

Clean the throttle body gasket mating surfaces.

Fig 7: Removing Throttle Body Assembly (L36)

Courtesy of GENERAL MOTORS CORP.