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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 906 (Engine Mechanical - 4.3L (LU3)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation (PCV) Valve Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the positive crankcase ventilation (PCV) valve hose assembly from the intake manifold.
  2. Disconnect the PCV valve hose from the valve rocker arm cover.
    Fig 1: View of Positive Crankcase Ventilation Valve Hose
    G01977372Courtesy of GENERAL MOTORS CORP.
  3. Turn and remove the PCV valve cover from the upper intake manifold.
  4. Remove and discard the seal (O-ring).
    Fig 2: PCV Valve Cover And Upper Intake Manifold
    G01977373Courtesy of GENERAL MOTORS CORP.
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