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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1056 (Engine Mechanical - 4.8L, 5.3L & 6.0L (Repair Instructions - 2 Of 3)) >> Repair Instructions (Off-Vehicle Repair Instructions Part 2) >> Engine Valley Cover Removal

Engine Valley Cover Removal

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the knock sensor wire harness.
  2. Fig 1: View Of Knock Sensor Wire Harness
    GM309859Courtesy of GENERAL MOTORS CORP.
  3. Remove the knock sensors.
  4. Fig 2: View Of Knock Sensors
    GM309864Courtesy of GENERAL MOTORS CORP.
  5. Remove the valley cover bolts.
  6. Remove the valley cover and gasket.
  7. Fig 3: View Of Engine Valley Cover, Gasket & Bolts
    GM65048Courtesy of GENERAL MOTORS CORP.
  8. Discard the valley cover gasket.
  9. Remove the knock sensor oil seals (520) from the cover (555).
  10. Fig 4: View Of Knock Sensor Oil Seals & Valley Cover
    GM1277106Courtesy of GENERAL MOTORS CORP.