GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 69062  Size: SH
  1. Drain coolant. Refer to cooling and radiator.
  2. Remove the air intake tube.

  3. Object Number: 69056  Size: SH
  4. Remove the IAC valve electrical connector.

  5. Object Number: 69065  Size: SH
  6. Remove the TP sensor electrical connector.

  7. Object Number: 12735  Size: SH
  8. Remove the accelerator control and cruise control cables from the accelerator control cable bracket.

  9. Object Number: 12689  Size: SH
  10. Remove the accelerator control cable bracket.

  11. Object Number: 12688  Size: SH
  12. Remove the throttle body coolant bypass hoses.
  13. Remove the heater pipe nut at the throttle body.
  14. Remove the nuts and bolts holding the throttle body to the intake manifold.
  15. Remove the throttle body assembly.

Installation 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.


    Object Number: 12688  Size: SH
  1. Clean the gasket surface on the intake manifold and the throttle body assembly.
  2. Install a new gasket, if necessary.
  3. Install the throttle body assembly.
  4. Install the throttle body retaining nuts and bolts (3).
  5. Tighten
    Tighten the throttle body retaining nuts and bolts to 28 N·m (21 lb ft).

  6. Install the throttle body coolant bypass hoses.
  7. Install the heater pipe nut at the throttle body.

  8. Object Number: 69056  Size: SH
  9. Install the IAC valve electrical connector.

  10. Object Number: 69065  Size: SH
  11. Install the TP sensor electrical connector.

  12. Object Number: 12689  Size: SH
  13. Install the accelerator control cable bracket.

  14. Object Number: 12735  Size: SH
  15. Install the accelerator control and cruise control cables.

  16. Object Number: 69062  Size: SH
  17. Install the air intake tube.
  18. Refill the coolant. Refer to cooling and radiator.
  19. Important: The throttle should operate freely without binding between full closed and wide open throttle.

  20. Inspect and check for complete throttle opening and closing positions by operating the accelerator pedal. Also check for poor carpet fit under the accelerator pedal.