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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 487 (Engine Mechanical - 5.3L, 6.0L, 6.2L - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Valve Rocker Arm Cover Replacement - Right Side >> Removal Procedure

Removal Procedure

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    Fig 1: View Of CPA Retainer, Engine Harness Electrical Connectors & Harness Clips
    GM1696893Courtesy of GENERAL MOTORS COMPANY
  1. Remove the intake manifold cover. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the connector position assurance (CPA) retainer (2).
  3. Disconnect the engine harness electrical connector (1) from the ignition coil wire harness.
  4. Remove the engine wiring harness (electronic throttle control branch) clip (6) from the ignition coil bracket stud.
  5. Reposition the engine wiring harness (electronic throttle control branch) as necessary.
    6. Fig 2: View Of Generator Battery Jumper Cable & Components
    GM1699546Courtesy of GENERAL MOTORS COMPANY
  6. Remove the generator battery cable clip (1) from the ignition coil bracket stud.
  7. Reposition the generator battery cable as necessary.
    8. Fig 3: View Of Heater Inlet Hose, Clamp & Waterpump
    GM1697282Courtesy of GENERAL MOTORS COMPANY
  8. Remove the heater inlet hose (2) from the heater hose bracket (3).
    9. Fig 4: View Of Radiator Surge Tank Outlet Hose, Clamp & Water Pump
    GM1697283Courtesy of GENERAL MOTORS COMPANY
  9. Remove the surge tank outlet hose (2) from the heater hose bracket (3).
    10. Fig 5: View Of Heater Hose Bracket & Nut
    GM1697280Courtesy of GENERAL MOTORS COMPANY
  10. Remove the heater hose bracket nut and bracket
    11. Fig 6: Ignition Coils & Bracket
    GM1402028Courtesy of GENERAL MOTORS COMPANY
  11. Remove the spark plug wires (724) 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.
  12. Remove the ignition coil bracket studs (720).
  13. Remove the ignition coil bracket (719).
    14. Fig 7: View Of PCV Tube & Right Valve Rocker Arm Cover Fitting
    GM1696757Courtesy of GENERAL MOTORS COMPANY
  14. Remove the positive crankcase ventilation (PCV) tube (1) from the valve rocker cover (2).
    15. Fig 8: View Of Valve Rocker Arm Cover (Right)
    GM832211Courtesy of GENERAL MOTORS COMPANY
  15. Loosen the valve rocker arm cover bolts.
  16. Remove the valve rocker arm cover.
    17. Fig 9: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS COMPANY
  17. Remove and discard the old gasket (1).
    18. Fig 10: Oil Fill Cap & Oil Fill Tube
    GM1559860Courtesy of GENERAL MOTORS COMPANY
  18. Remove the oil fill cap (424) from the oil fill tube (423), if necessary.
  19. Remove and discard the oil fill tube, if necessary.
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