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. Turn OFF the ignition.
  2. Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .

  3. Object Number: 373176  Size: SH
  4. Disconnect the idle air control (IAC) valve harness connector.

  5. Object Number: 373182  Size: SH
  6. Disconnect the throttle position (TP) sensor harness connector.

  7. Object Number: 388408  Size: SH
  8. Remove the vacuum hoses from the throttle body.
  9. Remove the accelerator cable. Refer to Accelerator Control Cable Replacement .
  10. Remove the cruise control cable, if applicable.
  11. Remove the accelerator cable bracket. Refer to Accelerator Control Cable Bracket Replacement .

  12. Object Number: 14994  Size: SH
  13. Remove the throttle body attaching bolts (1).
  14. Remove the manifold absolute pressure (MAP) sensor.
  15. Remove the throttle body from the intake manifold.

Installation Procedure

    Notice: The EVAP canister may have released carbon particles which caused this part to fail and may cause damage to other components. Check the EVAP canister for loose carbon before returning the vehicle to service.


    Object Number: 13710  Size: SH
  1. Install the throttle body (3).
  2. Install the accelerator cable bracket (2). Refer to Accelerator Control Cable Bracket Replacement .

  3. Object Number: 14994  Size: SH
  4. Install the MAP sensor.
  5. 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.

  6. Install the MAP sensor bolts.
  7. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

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

  10. Reinstall the accelerator cable to the throttle body. Refer to Accelerator Control Cable Replacement .
  11. Install the cruise control cable, if applicable.

  12. Object Number: 388408  Size: SH
  13. Install the vacuum hoses to throttle body.

  14. Object Number: 373176  Size: SH
  15. Connect the IAC valve harness connector.

  16. Object Number: 373182  Size: SH
  17. Connect the TP sensor harness connector.
  18. Connect the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
  19. Important: With the engine OFF, inspect to see that the accelerator pedal moves freely by pressing the pedal to the floor and releasing.

  20. Reconnect the negative battery cable.
  21. Reset the IAC valve pintle position:
  22. 13.1. Turn ON the ignition, with the engine OFF.
    13.2. Turn OFF the ignition for 10 seconds.
    13.3. Start the engine and verify the correct idle operation.