GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Aveo 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Idle Air Control Valve Replacement

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 2042527 Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Disconnect the idle air control valve (IACV) connector (2).

    3. Object Number: 2042528 Size: SH

    Note: Clean the IAC valve O-ring seal area, the pintle valve seat and the air passage with a suitable fuel system cleaner. Do not use methyl ethyl ketone.

  3. Remove the IACV retaining bolts (2).
  4. Remove the IACV (1).

Installation Procedure

    Object Number: 2042528 Size: SH

    Note: If installing a new IAC valve, be sure to replace it with an identical part. On IACV that have been in service, do not push on the valve pintle. The force required to move the pintle may damage the threads on the worm drive.

  1. Install the new O-ring seal with the IACV (1).

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Install the IACV retaining bolts (2) and tighten to 3 N·m (27 lb in).

    3. Object Number: 2042527 Size: SH
  3. Connect the IACV connector (2).
  4. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.