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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Engine Mechanical) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Right Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Right Side Main Electrical Connectors
    GM1235686Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement (6.0L (LQ4)) .
  2. Remove the connector position assurance (CPA) lock (5).
  3. Disconnect the main electrical connector (4) feeding the ignition coils.
  4. Remove the harness clips (1).
  5. Reposition the engine harness.
  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.
    7. Fig 2: View Of Heater Hose Bracket Nut
    GM688018Courtesy of GENERAL MOTORS CORP.
  7. Reposition the surge tank/heater hoses from the heater hose bracket.
  8. Remove the heater hose bracket nut and bracket.
    9. Fig 3: Ignition Coils And Bracket
    GM647792Courtesy of GENERAL MOTORS CORP.
  9. Remove the ignition coil bracket studs from the rocker arm cover.
  10. Remove the ignition coils and bracket from the rocker cover.
  11. Remove the positive crankcase ventilation (PCV) fresh air hose.
    12. Fig 4: View Of Valve Rocker Arm Cover & Bolts (Right)
    GM260084Courtesy of GENERAL MOTORS CORP.
  12. Remove the valve rocker arm cover bolts.
  13. Remove the valve rocker arm cover.
    14. Fig 5: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  14. Remove the gasket (1) from the rocker cover.
  15. Discard the OLD gasket.
    16. Fig 6: View Of Oil Fill Tube
    GM647798Courtesy of GENERAL MOTORS CORP.
  16. Remove the oil fill cap from the oil fill tube.
  17. Remove the oil fill tube from the rocker cover, if required.
  18. Discard the oil fill tube.
  19. Clean and inspect the rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection .
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