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Home >> Chevrolet >> 2005 >> Astro Van Cargo, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - (Introduction) Specifications & Repair Instructions >> Repair Instructions >> Idle Air Control (IAC) Valve Replacement >> Removal Procedure
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Removal Procedure

  1. Turn OFF the ignition.
  2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
    3. Fig 1: View Of Idle Air Control (IAC) Valve Wiring Harness Connector
    GM12886Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the harness connector from the idle air control (IAC) valve.
    4. Fig 2: View Of IAC Valve Screws
    GM12909Courtesy of GENERAL MOTORS CORP.
  4. Remove the IAC valve attaching fasteners.
    5. NOTE: If the IAC valve has been in service: DO NOT push or pull on the IAC valve pintle. The force required to move the pintle may damage the threads on the worm drive. Also, DO NOT soak the IAC valve in any liquid cleaner or solvent, as damage may result.
    Fig 3: View Of IAC Valve & O-Ring Seal
    GM12910Courtesy of GENERAL MOTORS CORP.
  5. Remove the IAC valve assembly.
  6. Remove the O-ring.
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