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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 885 (Engine Mechanical - 4.3L (LU3)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation (PCV) Valve Replacement >> Installation Procedure

Installation 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. Install the PCV valve cover using the following procedure:
    1. Install a NEW seal (O-ring) on the PCV valve cover.
    2. Lubricate the seal with clean engine oil.
    3. Install the PCV valve cover in the upper intake manifold.
    4. Turn and lock the PCV valve cover in position.
      Fig 1: PCV Valve Cover
      G01977374Courtesy of GENERAL MOTORS CORP.
  2. Connect the PCV valve hose assembly to the valve rocker arm cover.
  3. Connect the PCV valve hose assembly to the intake manifold.
    Fig 2: View of PCV Valve Hose
    G01977375Courtesy of GENERAL MOTORS CORP.
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