Express 1500 RWD V6-4.3L VIN X (2005)
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Shiny spots on the pintle or seat are normal and do not indicate misalignment or a bent pintle shaft.
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If the air passage has heavy deposits, remove the throttle body for a complete cleaning.
2. Inspect the IAC valve O-ring for cuts, cracks, or distortion. Replace the O-ring if damaged.
INSTALLATION PROCEDURE
1. Measure the distance between tip of the IAC valve pintle and the mounting flange.If the distance is more than 28 mm (1.10 in), use finger pressure
in order to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause damage to the valve.
IMPORTANT: If you are installing a new IAC valve, replace the valve with an identical part. The IAC valve pintle shape and diameter are designed
for the specific application.
2. Lubricate the IAC valve O-ring with clean engine oil.
3. Install the IAC valve assembly.
4. Install the attaching fasteners.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the IAC valve fasteners to 3 N.m (27 lb in).
5. Connect the IAC harness connector.
6. Install the engine cover.
7. Reset the IAC valve pintle position.
IAC VALVE RESET PROCEDURE
1. Turn ON the ignition for 20 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Start the engine.
4. Check for the proper idle speed.
