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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Engine Mechanical - 5.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the connector position assurance (CPA) lock.
  2. Disconnect the main electrical connector (5) to the ignition coil wire harness.
  3. Remove the harness clips.
  4. Reposition the engine harness, if necessary.
  5. 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 To Ignition Coil Wire Harness
      G02129115Courtesy of GENERAL MOTORS CORP.
  6. If necessary, remove the ignition coil bracket studs from the rocker arm cover.
  7. If necessary, remove the ignition coils and bracket from the rocker arm cover.
    Fig 2: Removing Ignition Coils And Bracket From Rocker Arm Cover
    G02129116Courtesy of GENERAL MOTORS CORP.
  8. Remove the positive crankcase ventilation (PCV) hose from the rocker arm cover.
    Fig 3: Removing Positive Crankcase Ventilation (PCV) Hose From Rocker Arm Cover
    G02129117Courtesy of GENERAL MOTORS CORP.
  9. Remove the valve rocker arm cover bolts.
  10. Remove the valve rocker arm cover.
    Fig 4: Removing Valve Rocker Arm Cover
    G02129118Courtesy of GENERAL MOTORS CORP.
  11. Remove the gasket (1) from the rocker cover.
  12. Discard the OLD gasket.
    Fig 5: Removing Gasket From Rocker Cover
    G02129119Courtesy of GENERAL MOTORS CORP.
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