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Home >> GMC >> 1992 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Air Control - Vehicles Without 4L80-E Transmission >> Idle Air Control System Check Chart >> PCV Valve

PCV Valve

An incorrect or faulty PCV valve may result in an incorrect idle speed. Refer to BASIC TESTING article in this section section.

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