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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1618 (Engine Mechanical - 4.3L) >> 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 Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the engine wiring harness bracket nuts.
  2. Remove the engine wiring harness bracket.
    Fig 1: Engine Wiring Harness Bracket & Nuts
    G02105832Courtesy of GENERAL MOTORS CORP.
  3. Remove the engine wiring harness clip bolt (4).
  4. Disconnect the engine coolant temperature (ECT) sensor electrical connector (5).
  5. Reposition the engine wiring harness and bracket.
    Fig 2: Engine Coolant Temperature (ECT) Sensor Electrical Connector & Wiring Harness Clip Bolt
    G02105833Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the power brake booster vacuum hose from the vacuum fitting.
    Fig 3: Power Brake Booster Vacuum Hose & Vacuum Fittings
    G02105834Courtesy of GENERAL MOTORS CORP.
  7. Remove the positive crankcase ventilation (PCV) valve hose from the valve cover and rocker cover.
    Fig 4: Positive Crankcase Ventilation (PCV) Valve Hose
    G02105835Courtesy of GENERAL MOTORS CORP.
  8. Remove the rocker arm cover bolts.
  9. Remove and discard the rocker arm cover bolt grommets, if necessary.
  10. Remove the rocker arm cover.
    Fig 5: Rocker Arm Cover & Bolts
    G02105836Courtesy of GENERAL MOTORS CORP.
  11. Remove and discard the rocker arm cover gasket.
  12. Clean and inspect the rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover Cleaning and Inspection .
    Fig 6: Rocker Arm Cover & Gasket
    G02105837Courtesy of GENERAL MOTORS CORP.
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