LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2004 >> Astro Van Cargo, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.3L - Introduction >> Repair Instructions >> Idle Air Control (IAC) Valve Replacement >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal Procedure

  1. Turn OFF the ignition.
  2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  3. Disconnect the harness connector from the idle air control (IAC) valve.
    Fig 1: View Of Idle Air Control (IAC) Valve Wiring Harness Connector
    GM12886Courtesy of GENERAL MOTORS CORP.
  4. Remove the IAC valve attaching fasteners.
    Fig 2: Identifying IAC Valve Attaching Fasteners
    GM12909Courtesy of GENERAL MOTORS CORP.
    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.
  5. Remove the IAC valve assembly.
    Fig 3: IAC Valve Assembly & O-Ring
    GM12910Courtesy of GENERAL MOTORS CORP.
  6. Remove the O-ring.
scientia non olet · About LEMON Manuals