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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 481 (Engine Mechanical - 6.6L V8 Diesel) >> Removal & Installation >> Engine Flywheel Housing >> Removal

Engine Flywheel Housing: Removal

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain engine coolant and engine block. See DRAINING & REFILLING COOLING SYSTEM . Remove starter. Remove transmission. See appropriate AUTOMATIC TRANSMISSIONS article in TRANSAXLES/TRANSMISSIONS. Remove flywheel. See ENGINE FLYWHEEL .
  2. Remove turbocharger oil return pipe nuts from top of flywheel housing. Remove crankshaft rear oil seal. See REAR CRANKSHAFT OIL SEAL . Remove oil filter.
  3. NOTE: The engine flywheel housing has dowels that protrude into upper oil pan and engine block. The upper oil pan requires removal for proper installation of engine flywheel housing.
  4. Remove upper oil pan. See OIL PAN . Remove engine rear cover bolts (denoted by a Black circle). Remove nuts retaining coolant duct to engine flywheel housing. Remove bolts retaining coolant duct to oil filter adapter and oil cooler assembly. Separate flywheel housing from cylinder block using Seal Cutter (J-37228). Remove engine rear cover.
  5. Remove O-rings from engine flywheel housing. Clean sealing surfaces on engine flywheel housing and engine block. Clean engine flywheel housing in clean solvent and air dry. Clean engine flywheel housing O-ring sealing area. Inspect engine flywheel housing for cracks. Inspect crankshaft rear oil seal bore for damage. Replace engine flywheel housing if any damage is found.