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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 >> Engine Valley Cover Replacement >> 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 intake manifold. Refer to INTAKE MANIFOLD REPLACEMENT   . 
  2. Gently pry up the rubber covers.
  3. Disconnect the knock sensor electrical connectors.
    Fig 1: Disconnecting Knock Sensor Electrical Connectors
    G02129107Courtesy of GENERAL MOTORS CORP.
  4. Remove the knock sensors.
    Fig 2: Removing Knock Sensors
    G02129108Courtesy of GENERAL MOTORS CORP.
  5. Remove the engine valley cover bolts.
  6. Remove the engine valley cover and gasket.
  7. Discard the old gasket.
    Fig 3: Removing Engine Valley Cover And Gasket
    G02129109Courtesy of GENERAL MOTORS CORP.
  8. Remove the knock sensor oil seals (1) from the cover (2).
  9. Clean and inspect the engine valley cover. Refer to ENGINE VALLEY COVER CLEANING AND INSPECTION   . 
    Fig 4: Removing Knock Sensor Oil Seals From Cover
    G02129110Courtesy of GENERAL MOTORS CORP.
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