GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2008 🢒 Unit Repair 🢒 Engine 🢒 Engine Controls and Fuel - LS Engines 🢒 Throttle Body Assembly Replacement

Removal Procedure

    Object Number: 1552478 Size: SH

    Notice: Handle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.

  1. Remove the air cleaner outlet duct.
  2. Disconnect the throttle body electrical connector.
  3. Remove the throttle body attaching bolts (538).

    4. Important: Do not reuse the throttle body gasket. Install a new gasket during assembly.

  4. Remove the throttle body (508) and discard the gasket (509).

Installation Procedure

    Object Number: 1552478 Size: SH
  1. Install a new throttle body gasket (509).
  2. Install the throttle body assembly (508).

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the throttle body attaching bolts (538).

    4. Tighten
    Tighten the throttle body bolts to 12 N·m (106 lb in).

  4. Connect the throttle body electrical connector.
  5. Install the air cleaner outlet duct.
  6. Check for complete throttle opening and closing positions by operating the accelerator pedal. Monitor the throttle angles, using a scan tool. The accelerator pedal should operate freely without binding between full closed throttle and wide open throttle.