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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1678 (Engine Mechanical - 6.6L (LMM) - Repair Instructions - On Vehicle) >> Flywheel Housing Replacement >> Removal Procedure

Removal Procedure

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    Fig 1: View Of Turbocharger Oil Return Pipe Nuts
    GM1334852Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) .
  2. Remove the crankshaft rear oil seal. Refer to Crankshaft Rear Oil Seal Replacement .
  3. Remove the turbocharger oil return pipe nuts from the top of the flywheel housing.
  4. Remove the oil cooler adapter studs and nuts from the flywheel housing.
    5. Fig 2: View Of Oil Filter
    GM660299Courtesy of GENERAL MOTORS CORP.
  5. Remove the upper oil pan. Refer to Upper Oil Pan Replacement .
  6. Remove the oil filter.
    7. Fig 3: View Of Engine Rear Cover Bolts & Flywheel Housing To Upper Oil Pan Bolts
    GM660335Courtesy of GENERAL MOTORS CORP.
  7. Remove the flywheel housing bolts, denoted by the black circles.
  8. Separate the flywheel from the cylinder block using J 37228  . See Special Tools .
  9. Remove the flywheel housing.
    10. Fig 4: View Of Oil Cooler Adapter
    GM1334855Courtesy of GENERAL MOTORS CORP.
  10. Remove the turbocharger oil return pipe gasket from the flywheel housing.
  11. Remove the oil cooler adapter bolts.
  12. Remove the oil cooler adapter and gaskets.
  13. If required, clean and inspect the flywheel housing. Refer to Flywheel Housing Cleaning and Inspection .
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