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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Engine Mechanical - 5.3L) >> 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 Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the air conditioning (A/C) compressor hose. Refer to COMPRESSOR HOSE ASSEMBLY REPLACEMENT (BODY VIN TYPE 3)  or  COMPRESSOR HOSE ASSEMBLY REPLACEMENT (BODY VIN TYPE 6)  in Heating, Ventilation, and Air Conditioning.
  2. Remove the connector position assurance (CPA) lock.
  3. Disconnect the main electrical connector (1) to the ignition coil wire harness.
  4. Remove the harness clips.
  5. Reposition the engine harness, if necessary.
  6. Remove the spark plug wires from the ignition coils.
    • Twist each plug wire 1/2 turn.
    • Pull only on the boot in order to remove the wire from the ignition coil.
      Fig 1: Disconnecting Main Electrical Connector To Ignition Coil Wire Harness
      G02129125Courtesy of GENERAL MOTORS CORP.
  7. If necessary, remove the ignition coil bracket studs from the rocker arm cover.
  8. If necessary, remove the ignition coils and bracket from the rocker cover.
    Fig 2: Removing Ignition Coils And Bracket From Rocker Cover
    G02129126Courtesy of GENERAL MOTORS CORP.
  9. Remove the vent hose from the throttle body and valve rocker arm cover.
    Fig 3: Removing Vent Hose From Throttle Body And Valve Rocker Arm Cover
    G02129127Courtesy of GENERAL MOTORS CORP.
  10. Remove the valve rocker arm cover bolts.
  11. Remove the valve rocker arm cover.
    Fig 4: Removing Valve Rocker Arm Cover
    G02129128Courtesy of GENERAL MOTORS CORP.
  12. Remove the gasket (1) from the rocker cover.
  13. Discard the OLD gasket.
    Fig 5: Removing Gasket From Rocker Cover
    G02129129Courtesy of GENERAL MOTORS CORP.
  14. Remove the oil fill cap from the oil fill tube.
  15. Remove the oil fill tube from the rocker cover, if required.
  16. Discard the oil fill tube.
    Fig 6: Removing Oil Fill Tube From Rocker Cover
    G02129130Courtesy of GENERAL MOTORS CORP.
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