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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1444 (Engine Mechanical - 5.3L (Lm4)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Right >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Electrical Components At Top Of Engine
    GM898331Courtesy of GENERAL MOTORS CORP.
  1. Remove the air conditioning (A/C) compressor hose. Refer to Compressor Hose Assembly Replacement (LM4) in Heating, Ventilation, and Air Conditioning.
  2. Remove the connector position assurance (CPA) lock.
  3. Disconnect the main electrical connector (1) to the ignition coil wire harness.
  4. Remove the harness clips.
  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: Ignition Coil View
    GM825840Courtesy of GENERAL MOTORS CORP.
  7. If necessary, remove the ignition coil bracket studs from the rocker arm cover.
  8. If necessary, remove the ignition coils and bracket from the rocker cover.
    9. Fig 3: Locating Breather Hose
    GM647795Courtesy of GENERAL MOTORS CORP.
  9. Remove the vent hose from the throttle body and valve rocker arm cover.
    10. Fig 4: View Of Valve Rocker Arm Cover & Bolts (Right)
    GM260084Courtesy of GENERAL MOTORS CORP.
  10. Remove the valve rocker arm cover bolts.
  11. Remove the valve rocker arm cover.
    12. Fig 5: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  12. Remove the gasket (1) from the rocker cover.
  13. Discard the OLD gasket.
    14. Fig 6: View Of Oil Fill Tube
    GM647798Courtesy of GENERAL MOTORS CORP.
  14. Remove the oil fill cap from the oil fill tube.
  15. Remove the oil fill tube from the rocker cover, if required.
  16. Discard the oil fill tube.
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