GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1641064  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Disconnect the engine harness electrical connector from the electronic throttle control (ETC).
  3. Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .

  4. Object Number: 1641081  Size: SH
  5. Remove the throttle body bolts.
  6. Remove the throttle body.
  7. Remove the throttle body gasket.
  8. 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.

  9. Clean and inspect the throttle body gasket mating surfaces.

Installation Procedure


    Object Number: 1641081  Size: SH
  1. Install a NEW throttle body gasket, if necessary.
  2. Install the throttle body.
  3. Notice: Refer to Fastener Notice in the Preface section.

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

  6. Install the thermostat bypass pipe. Refer to Thermostat Bypass Pipes Replacement .

  7. Object Number: 1641064  Size: SH
  8. Connect the engine harness electrical connector to the ETC.
  9. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .