GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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.

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

  1. Remove the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement .

  2. Object Number: 783168  Size: SH
  3. Disconnect the idle air control (IAC) valve harness connector (1).
  4. Disconnect the throttle position (TP) sensor harness connector (2).
  5. Disconnect the vacuum hoses at the throttle body.
  6. Remove the accelerator control bracket and cable from the throttle body. Refer to Accelerator Control Cable Bracket Replacement .

  7. Object Number: 898518  Size: SH
  8. Remove the throttle body attaching bolts (1).
  9. Remove the throttle body (4) from the intake manifold.

Installation Procedure


    Object Number: 898518  Size: SH
  1. Inspect the throttle body gasket (3) and replace if necessary.
  2. Install the throttle body (4) to the intake manifold.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the throttle body attaching bolts (1).
  5. Tighten
    Tighten the throttle body attaching bolts to 10 N·m (89 lb in).

  6. Install the accelerator cable bracket and cable. Refer to Accelerator Control Cable Bracket Replacement .
  7. Connect the vacuum hoses to the throttle body.

  8. Object Number: 783168  Size: SH
  9. Connect the TP sensor harness connector (2).
  10. Connect the IAC valve harness connector (1).
  11. Install the air cleaner resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  12. Test the accelerator movement by depressing the pedal to the floor and releasing the pedal.