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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1619 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> 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 Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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: Rubber Covers & Knock Sensor Electrical Connectors
    G02106631Courtesy of GENERAL MOTORS CORP.
  4. Remove the knock sensors.
    Fig 2: Removing Knock Sensors
    G02106632Courtesy 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, Bolts & Gasket
    G02106633Courtesy of GENERAL MOTORS CORP.
  8. Remove the knock sensor oil seals (1) from the cover (2).
  9. If required, clean and inspect the engine valley cover. Refer to Engine Valley Cover Cleaning and Inspection .
    Fig 4: Knock Sensor Oil Seals & Engine Valley Cover
    G02106634Courtesy of GENERAL MOTORS CORP.
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