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.

Note: DO NOT prop open the throttle blade with the ignition key in the ON position as it may set a diagnostic trouble code (DTC).


    Object Number: 1647528  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement.
  3. Disconnect the throttle actuator control (TAC) electrical connector (1).

  4. Object Number: 1623767  Size: SH
  5. Remove the throttle body bolts.
  6. Remove the throttle body.
  7. Inspect the throttle body gasket, and replace if necessary.

Installation Procedure


    Object Number: 1623767  Size: SH
  1. Install the throttle body.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the throttle body bolts and tighten to 10 N·m (89 lb in).

  4. Object Number: 1647528  Size: SH
  5. Connect the TAC electrical connector (1).
  6. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement.
  7. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.