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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Right >> Removal Procedure

Removal Procedure

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  1. Remove the engine sight shield, if required. Refer to ENGINE SIGHT SHIELD REPLACEMENT (4.8L, 5.3L, AND 6.0L (RPO LQ4))  or ENGINE SIGHT SHIELD REPLACEMENT (6.0L (RPO 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.
    Fig 1: Disconnecting Main Electrical Connector (Left)
    G02116369Courtesy of GENERAL MOTORS CORP.
  7. If equipped with the 4.8L, 5.3L, or 6.0L (LQ4) engine, perform the following:
    1. 7.1. Reposition the surge tank/heater hoses from the heater hose bracket.
    2. 7.2. Remove the heater hose bracket nut and bracket.
    Fig 2: Removing Heater Hose Bracket Nut & Bracket (Left)
    G02116370Courtesy of GENERAL MOTORS CORP.
  8. Remove the ignition coil bracket studs.
  9. Remove the ignition coil bracket.
    Fig 3: Removing Ignition Coil Bracket & Studs (Left)
    G02116371Courtesy of GENERAL MOTORS CORP.
  10. Remove the positive crankcase ventilation (PCV) hose.
    Fig 4: Removing PCV Hose (Left)
    G02116372Courtesy of GENERAL MOTORS CORP.
  11. Loosen the valve rocker arm cover bolts.
  12. Remove the valve rocker arm cover.
    Fig 5: Removing Valve Rocker Arm Cover (Left)
    G02116373Courtesy of GENERAL MOTORS CORP.
  13. Remove and discard the old gasket (1).
    Fig 6: Removing Gasket (Left)
    G02116374Courtesy of GENERAL MOTORS CORP.
  14. Remove the oil fill tube from the rocker cover, if required.
  15. If required, clean and inspect the rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection  .
    Fig 7: Removing Oil Fill Tube From Rocker Cover (Left)
    G02116375Courtesy of GENERAL MOTORS CORP.
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