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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Engine Flywheel Housing Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install NEW O-ring seals to the flywheel housing, if required.
  2. Fig 1: View Of Flywheel Housing O-Ring Seals
    GM663771Courtesy of GENERAL MOTORS CORP.
  3. Apply a 2 mm (1/8 in) wide bead of sealant (3) GM P/N 97720043 (Canadian P/N 88901148), or equivalent to the engine rear cover sealing surfaces.
  4. Fig 2: View Of Engine Rear Cover Sealing Surfaces Sealant Application Area
    GM663922Courtesy of GENERAL MOTORS CORP.
  5. Install a NEW oil cooler adapter gasket (2).
  6. Install a NEW oil cooler adapter to flywheel housing gasket (1).
  7. Fig 3: View Of Oil Cooler Adapter Gaskets
    GM663919Courtesy of GENERAL MOTORS CORP.
  8. Install the oil cooler adapter to the flywheel housing.
  9. Loosely install the oil cooler adapter to the flywheel housing nuts.
  10. Install the flywheel housing to the block.
  11. NOTE: Refer to Fastener Notice in Cautions and Notices.
  12. Install the flywheel housing bolts, denoted by the black circles.

    Tighten:  Tighten the bolts to 90 N.m (67 lb ft).

  13. Fig 4: View Of Engine Rear Cover Bolts & Flywheel Housing To Upper Oil Pan Bolts
    GM660335Courtesy of GENERAL MOTORS CORP.
  14. Install the oil cooler adapter to oil cooler bolts.

    Tighten:  Tighten the bolts/nuts to 21 N.m (15 lb ft).

  15. Fig 5: View Of Coolant Duct To Flywheel Housing & Oil Cooler Components
    GM739098Courtesy of GENERAL MOTORS CORP.
  16. Install a new gasket to the turbocharger oil return pipe.
  17. Install the turbocharger oil return pipe to flywheel housing nuts.

    Tighten:  Tighten the nuts to 21 N.m (15 lb ft).

  18. Fig 6: View Of Turbocharger Oil Return Pipe Nuts
    GM660327Courtesy of GENERAL MOTORS CORP.
  19. Install the upper oil pan. Refer to Oil Pan Replacement - Upper .
  20. Install the crankshaft rear oil seal. Refer to Crankshaft Rear Oil Seal Replacement .
  21. Install the starter. Refer to Starter Motor Replacement (6.6L (LB7) Engine) in Engine Electrical.
  22. Install a new oil filter.

    Tighten:  Tighten the oil filter after contact 1 to 11/4 turns.

  23. Fig 7: View Of Oil Filter
    GM660299Courtesy of GENERAL MOTORS CORP.
  24. Lower the vehicle.
  25. Fill the cooling system. Refer to Draining and Filling Cooling System (without HP2) in Engine Cooling.