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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Engine Mechanical - 4.8L, 5.3L, & 6.0L (On-Vehicle)) >> Repair Instructions >> Valve Rocker Arm Cover Replacement - Right >> Removal Procedure

Removal Procedure

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    Fig 1: Right Ignition Coil Electrical Connectors & Harness Clips
    GM679598Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine sight shield, if required. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (LQ4))  or Engine Sight Shield Replacement (6.0L (LQ9)) .
  2. Remove the connector position assurance (CPA) lock.
  3. Disconnect the main electrical connector (1) feeding the ignition coils.
  4. Remove the harness clips (2).
  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.
    7. Fig 2: Heater Hose Bracket & Nut
    GM688018Courtesy of GENERAL MOTORS CORP.
  7. If equipped with the 4.8L, 5.3L, or 6.0L (LQ4) engine, perform the following:
    1. Reposition the surge tank/heater hoses from the heater hose bracket.
    2. Remove the heater hose bracket nut and bracket.
    8. Fig 3: Left Ignition Coil, Bracket & Studs
    GM647792Courtesy of GENERAL MOTORS CORP.
  8. Remove the ignition coil bracket studs from the rocker arm cover.
  9. Remove the ignition coils and bracket from the rocker cover.
    10. Fig 4: Locating Breather Hose
    GM647795Courtesy of GENERAL MOTORS CORP.
  10. Remove the positive crankcase ventilation (PCV) hose from the throttle body and rocker cover.
    11. Fig 5: View Of Valve Rocker Arm Cover & Bolts (Right)
    GM260084Courtesy of GENERAL MOTORS CORP.
  11. Remove the valve rocker arm cover bolts.
  12. Remove the valve rocker arm cover.
    13. Fig 6: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  13. Remove the gasket (1) from the rocker cover.
  14. Discard the OLD gasket.
    15. Fig 7: View Of Oil Fill Tube
    GM647798Courtesy of GENERAL MOTORS CORP.
  15. Remove the oil fill cap from the oil fill tube.
  16. Remove the oil fill tube from the rocker cover, if required.
  17. Discard the oil fill tube.
  18. Clean and inspect the rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection in Engine Mechanical - 4.8L, 5.3L, and 6.0L Unit Repair.
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