GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 49594  Size: SH
  1. Remove the fuel injector sight shield.

  2. Object Number: 60220  Size: SH
  3. Remove the electrical connector from the idle air control valve (1).
  4. Remove the idle air control valve attaching screws.

  5. Object Number: 15083  Size: SH
  6. Remove the idle air control valve.
  7. Remove the idle air control valve O-ring.

Installation Procedure

Notice: The IAC valve may be damaged if installed with the cone (pintle) extended more than 28 mm (1-1/8 in). Measure the distance that the valve is extended before installing a new valve. The distance from the idle air control valve motor housing to the end of the idle air control valve pintle should be less than 28 mm (1-1/8 in). Manually compress the pintle until the extension is less than 28 mm (1-1/8 in).


    Object Number: 15083  Size: SH
  1. Install the new idle air control O-ring.
  2. Install the idle air control valve into the throttle body.
  3. Install the idle air control valve attaching screws.
  4. Tighten
    Tighten the bolt to 3 N·m (27 in lb).

  5. Install the electrical connector to the idle air control valve.
  6. The PCM will reset the idle air control valve whenever the ignition switch is turned ON, then OFF.
  7. • Turn the ignition switch ON, then OFF.
    • Turn the ignition switch OFF.
  8. Start the engine and allow the engine to reach operating temperature.

  9. Object Number: 49594  Size: SH
  10. Install the fuel injector sight shield.
  11. Tighten
    (VIN 1 Only) Tighten the bolt to 2 N·m (18 in lb).