GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: 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.

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


    Object Number: 1590626  Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement.
  2. Remove the air cleaner outlet. Refer to Air Cleaner Outlet Resonator Replacement.
  3. Disconnect the electronic throttle control (ETC) electrical connector (3).

  4. Object Number: 1578462  Size: SH
  5. Remove the throttle body bolts.
  6. Remove the throttle body from the intake manifold.

Installation Procedure


    Object Number: 1578462  Size: SH
  1. Inspect the throttle body gasket and replace if necessary.
  2. Caution: Refer to Fastener Caution in the Preface section.

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


    Object Number: 1590626  Size: SH
  6. Connect the ETC electrical connector (3).
  7. Install the air cleaner outlet. Refer to Air Cleaner Outlet Resonator Replacement.
  8. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement.