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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1401 (Engine Mechanical - 6.6L (2 Of 5)) >> Repair Instructions - On Vehicle >> Engine Front Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Crankshaft Position Sensor Electrical Connector
    GM1335470Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (With Single Battery) or Battery Negative Cable Disconnection and Connection (With Auxiliary Battery) or Battery Negative Cable Disconnection and Connection (With Dual Batteries) .
  2. Remove the water pump. Refer to Water Pump Replacement (LMM) .
  3. Remove the crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
  4. Remove the right wheelhouse panel. Refer to Front Wheelhouse Liner Replacement - Right Side (Chevrolet) or Front Wheelhouse Liner Replacement - Right Side (GMC) .
  5. Disconnect the crankshaft position (CKP) sensor electrical connector.
    6. Fig 2: View Of CKP Sensor & Bolt
    GM1336119Courtesy of GENERAL MOTORS CORP.
  6. Remove the CKP sensor bolt and sensor.
  7. Remove the CKP sensor spacer bolts and spacer.
  8. Remove and discard the O-rings from the sensor and the spacer.
    9. Fig 3: View Of Upper Oil Pan To Engine Front Cover Bolts
    GM738866Courtesy of GENERAL MOTORS CORP.
  9. Remove the upper oil pan to engine front cover bolts.
    10. Fig 4: View Of Engine Front Cover
    GM1336120Courtesy 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  . See Special Tools .
    12. NOTE: Do not bend the turbocharger coolant pipe.
  12. Remove the engine front cover.
    13. Fig 5: View Of Pressure Relief Valve O-Ring
    GM793901Courtesy of GENERAL MOTORS CORP.
  13. If necessary, remove the pressure relief valve O-ring.
  14. Clean and inspect the front cover. Refer to Engine Front Cover Cleaning and Inspection .
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