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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Right >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim .
  2. Remove the upper transmission fill tube.
  3. Remove the oil fill tube. Refer to Oil Level Indicator and Tube Replacement .
  4. Disconnect the main electrical connector (1) to the ignition coil wire harness.
  5. Remove the harness clips (2).
  6. Reposition the engine harness, if necessary.
    Fig 1: Disconnecting Main Electrical Connector & Removing Harness Clips
    G02078474Courtesy of GENERAL MOTORS CORP.
  7. 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.
  8. Remove the ignition coil bracket studs from the rocker arm cover.
  9. Remove the ignition coils and bracket from the rocker cover.
    Fig 2: Removing Ignition Coil Bracket Studs, Ignition Coils & Bracket
    G02078475Courtesy of GENERAL MOTORS CORP.
  10. Remove the vent hose from the valve rocker arm cover.
    Fig 3: Removing Vent Hose
    G02078476Courtesy of GENERAL MOTORS CORP.
  11. Remove the valve rocker arm cover bolts.
  12. Remove the valve rocker arm cover.
    Fig 4: Removing Valve Rocker Arm Cover Bolts & Cover
    G02078477Courtesy of GENERAL MOTORS CORP.
  13. Remove the gasket (1) from the rocker cover.
  14. Discard the OLD gasket.
    Fig 5: Removing Rocker Cover Gasket
    G02078478Courtesy of GENERAL MOTORS CORP.
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