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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 - Left 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: View Of Main Coil Harness & Fuel Injector Electrical Connectors (Left Side)
    GM679597Courtesy 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.
  3. Disconnect the main electrical connector (2) 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 Ignition Coil, Bracket Assembly, Wire Harness & Bolts (Left)
    GM1342458Courtesy of GENERAL MOTORS CORP.
  7. Remove the ignition coil bracket studs from the rocker arm cover.
  8. Remove the ignition coils and bracket from the rocker arm cover.
  9. Remove the valve rocker arm cover bolts.
  10. Remove the valve rocker arm cover.
    11. Fig 3: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  11. Remove the gasket (1) from the rocker cover.
  12. Discard the OLD gasket.
  13. Clean and inspect the rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection .
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