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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1075 (Engine Mechanical - 6.6L (4 Of 5)) >> Off-Vehicle Repair Instructions (3 Of 4) >> Engine Flywheel Housing Cleaning and Inspection

Engine Flywheel Housing Cleaning and Inspection

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Flywheel Housing O-Ring Seals
    GM663771Courtesy of GENERAL MOTORS CORP.
  1. Remove the O-rings from the flywheel housing and discard.
  2. Clean the flywheel housing.
  3. Clean the flywheel housing mating surfaces.
  4. Clean the flywheel housing O-ring sealing area.
  5. Inspect the flywheel housing for cracks.
  6. Inspect the flywheel housing mating surfaces for damage.
  7. Inspect the crankshaft rear oil seal bore for damage.
  8. Replace the flywheel housing if any damage is found.
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