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 (L36) or Fuel Injector Sight Shield Replacement (L67) in Engine Mechanical - 3.8L.
Remove the air cleaner intake duct. Refer to Air Cleaner Intake Duct Replacement .

Fig 1: View Of IAC Valve Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the idle air control (IAC) valve electrical connector.

Fig 2: View Of TP Sensor & Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the throttle position (TP) sensor electrical connector.

Fig 3: View Of MAF Sensor & Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the mass air flow (MAF) sensor electrical connector.
Remove the accelerator controls cable bracket. Refer to Accelerator Controls Cable Bracket Replacement .

Fig 4: Locating Electrical Wiring Harness To Accelerator Controls Bracket

Courtesy of GENERAL MOTORS CORP.

Remove the electrical wiring harness (2) from the accelerator controls cable bracket (3).

Fig 5: View Of Vacuum Hoses To Throttle Body

Courtesy of GENERAL MOTORS CORP.

Remove the vacuum hoses from the throttle body.

Fig 6: Locating Throttle Body Support Bracket

Courtesy of GENERAL MOTORS CORP.

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

Fig 7: View Of Throttle Body Assembly

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.