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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 516 (Engine Mechanical - 4.3L (LU3)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Right >> 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. Remove the PCV tube from the air cleaner outlet duct and the valve rocker arm cover.
  2. Disconnect the spark plug wires from the spark plugs for the right side of the engine. Refer to SPARK PLUGS in Service & Adjustment Specifications - 47.3L in Engine Performance.
  3. Remove the EVAP canister purge solenoid valve. Refer to EVAP CANISTER in Removal and Installation in Engine Performance.
    Fig 1: Removing PCV Tube from Air Cleaner Outlet Duct
    G01977464Courtesy of GENERAL MOTORS CORP.
  4. Unfasten the heater hose retainer above the valve rocker arm cover.
  5. Move and secure the heater hoses aside.
    Fig 2: Unfastening Heater Hose Retainer
    G01977465Courtesy of GENERAL MOTORS CORP.
  6. Remove the bolt (3) holding the engine wiring harness bracket to the generator.
  7. Disconnect the crankcase position (CKP) sensor electrical connector (2).
  8. Move and secure the engine wiring harness aside.
    Fig 3: Identifying Engine Wiring Harness Bracket Bolt, CKP Sensor, & Electrical Connector
    G01977466Courtesy of GENERAL MOTORS CORP.
  9. Remove the valve rocker arm cover bolts.
  10. Remove the valve rocker arm cover bolt grommets.
  11. Discard the valve rocker arm cover bolt grommets.
    Fig 4: Identifying Valve Rocker Arm Cover Bolts
    G01977467Courtesy of GENERAL MOTORS CORP.
  12. Remove the valve rocker arm cover.
    Fig 5: Removing Valve Rocker Arm Cover
    G01977468Courtesy of GENERAL MOTORS CORP.
  13. Remove the valve rocker arm cover gasket.
  14. Discard the valve rocker arm cover gasket.
    Fig 6: Removing Valve Rocker Arm Cover Gasket
    G01977469Courtesy of GENERAL MOTORS CORP.
  15. Clean the valve rocker arm cover in cleaning solvent.
  16. Dry the valve rocker arm cover with the compressed air.
  17. Inspect the valve rocker arm cover for the following:
    • Damage to the PCV valve grommet (1)
    • Damage to the bolt holes (2)

      A damaged valve rocker arm cover may interfere with the valve rocker arms.

    • Damage to the exterior of the valve rocker arm cover (3)
    • Gouges or damage to the sealing surface (4)
    • Damage to the oil fill tube grommet (5)
    • Restrictions to the ventilation system passages
      Fig 7: Cleaning and Inspecting Valve Rocker Arm Cover
      G01977470Courtesy of GENERAL MOTORS CORP.
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