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Home >> GMC >> 2005 >> Jimmy Part Time, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - (Introduction) >> Repair Instructions >> Idle Air Control (IAC) Valve Replacement >> Cleaning and Inspection Procedure
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Cleaning and Inspection Procedure

  1. Clean the IAC valve O-ring sealing surface, pintle valve seat, and air passage.
    • Remove 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 Assembly Replacement .
  2. IMPORTANT: DO NOT reuse the original O-ring.
  3. Replace the IAC valve O-ring.