Cleaning and Inspection Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Clean the IAC valve O-ring sealing surface, pintle valve seat, and air passage.

Remove any excess carbon deposits with a small amount of carburetor cleaner on a parts cleaning brush. Follow any instructions on the cleaner container regarding cleaner usage.
Do not use a cleaner containing an extremely powerful solvent such as methyl ethyl ketone.
Shiny spots on the pintle and seat do not represent a bent or misaligned pintle shaft.
If heavy deposits are present in the air passage, remove the throttle body for a complete cleaning. Refer to Throttle Body Cleaning Procedure .