GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: 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.

Notice: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.


    Object Number: 1773494  Size: SH
  1. Remove the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  2. Disconnect the engine wiring harness electrical connector from the electronic throttle control (ETC).

  3. Object Number: 1773486  Size: SH
  4. Remove the throttle body bolts.
  5. Remove the throttle body from the intake manifold.

Installation Procedure


    Object Number: 1773486  Size: SH
  1. Inspect the throttle body gasket and replace if necessary.
  2. Position the throttle body to the intake manifold.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the throttle body bolts.
  5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1773494  Size: SH
  6. Connect the engine wiring harness electrical connector to the ETC.
  7. Install the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement .