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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.5L - Repair Instructions - Off Vehicle (2 Of 3)) >> Positive Crankcase Ventilation (PCV) Valve Cleaning and Inspection

Positive Crankcase Ventilation (PCV) Valve Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Identifying Positive Crankcase Ventilation (PCV) Valve
    GM1578567Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not attempt to remove the valve from the valve rocker arm cover, as damage may occur to the rocker arm valve cover. The positive crankcase ventilation (PCV) valve is a fixed orifice system.
  1. Flush the carbon from the PCV valve orifices (1) using solvent.
  2. Dry the PCV valve orifices using compressed air.
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