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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankcase Ventilation Hoses/Pipes Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim .
  2. Disconnect the positive crankcase ventilation (PCV) tube from the air cleaner duct.
  3. Disconnect the PCV tube from the right valve rocker arm cover.
    Fig 1: Disconnecting PCV Tube
    G02077689Courtesy of GENERAL MOTORS CORP.
  4. Disconnect the PCV valve hose assembly from the intake manifold.
  5. Disconnect the PCV valve hose assembly from the left valve rocker arm cover.
  6. Inspect the tube and hose for cuts or cracking.
  7. Inspect the grommets in the valve rocker arm covers for cuts or cracking.
  8. Replace the PCV hose/tube as required.
    Fig 2: Disconnecting PCV Valve Hose Assembly
    G02077690Courtesy of GENERAL MOTORS CORP.
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