GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2005 🢒 Unit Repair 🢒 Engine 🢒 Engine Controls - 3.5L (LX9) 🢒 Throttle Body Assembly Replacement

Removal Procedure
  1. Remove the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement.
  2. Disconnect the electronic throttle control (ETC) electrical connector.

    3. Object Number: 1239021 Size: SH
  3. Remove the heater pipe nut at the throttle body.

    4. Object Number: 1239002 Size: SH
  4. Remove the nuts and the bolts from the throttle body.
  5. Remove the throttle body assembly.
  6. Remove the throttle body gasket.

    7. 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.

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

Installation Procedure

    Object Number: 1239002 Size: SH
  1. Install a new gasket, if necessary.
  2. Install the throttle body assembly.

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

  3. Install the throttle body nuts and the bolts.

    4. Tighten
    Tighten the nuts and the bolts to 10 N·m (89 lb in).


    Object Number: 1239021 Size: SH
  4. Install the heater pipe nut to the throttle body.

    5. Tighten
    Tighten the nut to 25 N·m (18 lb ft).

  5. Connect the ETC electrical connector.
  6. Install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement.
  7. Refer to Control Module References for programming and setup information.