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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1020 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Engine Front Cover Replacement >> Removal Procedure

Removal Procedure

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. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  2. Remove the water pump. Refer to Water Pump Replacement (6.6L (LLY)) in Engine Cooling.
  3. Remove the crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
  4. Remove the right wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
  5. Disconnect the crankshaft position (CKP) sensor electrical connector.
    6. Fig 1: View Of Crankshaft Position Sensor Electrical Connector
    GM1335470Courtesy of GENERAL MOTORS CORP.
  6. Remove the CKP sensor bolt and sensor.
  7. Remove the CKP sensor spacer bolts and spacer.
    8. Fig 2: View Of CKP Sensor & Bolt
    GM1336119Courtesy of GENERAL MOTORS CORP.
  8. Remove and discard the O-rings from the sensor and the spacer.
  9. Remove the upper oil pan to engine front cover bolts.
    10. Fig 3: View Of Upper Oil Pan Front To Front Cover Bolts
    GM738866Courtesy of GENERAL MOTORS CORP.
  10. Remove the engine front cover bolts.
  11. Separate the engine front cover from the cylinder block and upper oil pan using J 37228  .
    12. IMPORTANT: Do not bend the turbocharger coolant pipe.
  12. Remove the engine front cover.
    13. Fig 4: View Of Engine Front Cover
    GM1336120Courtesy of GENERAL MOTORS CORP.
  13. If necessary, remove the pressure relief valve O-ring.
    14. Fig 5: View Of Pressure Relief Valve O-Ring
    GM793901Courtesy of GENERAL MOTORS CORP.
  14. Clean and inspect the front cover. Refer to Engine Front Cover Cleaning and Inspection .
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