Installation Procedure

WARNING: This page is about a different variant/trim than selected.

If installing a NEW IAC valve, measure the distance between the IAC valve pintle and the mounting flange. If the distance is more than 28 mm (1.10 in), use finger pressure, and gently push in the pintle.

Fig 1: Measuring Distance Between IAC Valve Pintle & Mounting Flange
Courtesy of GENERAL MOTORS CORP.
Install a NEW IAC valve O-ring seal.

Fig 2: Installing IAC Valve & O-Ring Seal
Courtesy of GENERAL MOTORS CORP.
Lubricate the IAC valve O-ring seal with clean engine oil.
Install the IAC valve and O-ring seal.
If installing the old IAC valve, clean the old thread locking material from the screws.
If installing the old IAC valve coat the screw threads with threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the IAC valve screws.

Fig 3: Installing IAC Valve Screws
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the screws to 3 N.m (27 lb in).
Connect the IAC valve electrical connector (2).

Fig 4: View Of TP Sensor, IAC Motor, ECT Sensor, Control Port Injector Module & Engine Harness Clip Bolt
Courtesy of GENERAL MOTORS CORP.
Install the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
Perform the IAC reset procedure:
1. Turn the ignition to the ON position, wait for 5 seconds.
2. Turn the ignition to the OFF position, wait for 10 seconds.
3. Start the engine and check for proper idle speed.