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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Mechanical - 6.6L - On Vehicle Repair Instructions) >> On-Vehicle Repair Instructions >> Engine Flywheel Housing Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System (w/RPO HP2) or Draining and Filling Cooling System (w/o RPO HP2) .
  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.
    Fig 1: View Of Turbocharger Oil Return Pipe Nuts
    GM1334852Courtesy of GENERAL MOTORS CORP.
  4. Remove the upper oil pan. Refer to Oil Pan Replacement - Upper .
  5. Remove the oil filter.
    Fig 2: View Of Oil Filter
    GM660299Courtesy of GENERAL MOTORS CORP.
  6. Remove the flywheel housing bolts, denoted by the black circles.
    Fig 3: Locating Flywheel Housing Bolts
    GM660335Courtesy of GENERAL MOTORS CORP.
  7. Separate the flywheel from the cylinder block using J 37228  . See Special Tools .
  8. Remove the flywheel housing.
  9. Remove the turbocharger oil return pipe gasket from the flywheel housing.
  10. Remove the oil cooler adapter bolts.
  11. Remove the oil cooler adapter and gaskets.
    Fig 4: View Of Oil Cooler Adapter
    GM1334855Courtesy of GENERAL MOTORS CORP.
  12. If required, clean and inspect the flywheel housing. Refer to Engine Flywheel Housing Cleaning and Inspection .
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