OEM GMC Savana 2500 Idle Control Valve

GMC Savana 2500 Idle Control Valve Parts Questions & Experts Answers

• Idle Speed Control
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  Q: How to replace the Idle Control Valve on GMC Savana 2500?

  A:

  The first action before replacing the idle control (IC) valve should include engine ignition off and removal of the engine cover. The first step began with removing the ic valve connecting harness and afterward proceeded with removing its attaching fasteners. Pulling or pushing the ic valve pintle should be avoided to keep the worm drive threads safe because the ic valve must never be immersed in any liquid cleaner or solvent. Take off the ic valve assembly together with the o-ring. A parts cleaning brush combined with carburetor cleaner will clean carbon deposits from the ic valve o-ring sealing surface and pintle valve seat and air passage. Ensure to avoid using cleaners with methylethylketone (MEK). It is normal to observe shiny spots on the pintle and seat surface however a thorough cleaning of the Throttle Body should be performed when heavy deposits block the air passage. Any cuts or cracks or visual deformation in the ic valve o-ring requires for replacement. The ic valve needs to be an exact match for the original unit because its pintle shape and diameter requirement is application-specific. Depress the ic valve pintle with finger pressure carefully until distance a measures less than 28 mm (1.10 in). Apply engine oil to the o-ring before installing the ic valve assembly alongside its attaching fasteners which need to be tightened at 3.0 n.m (26 lb in). First connect the ic harness then place back the engine cover while resetting the ic valve pintle back to its original position.