GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Oil Filter Adapter and Oil Cooler Assembly Replacement

Removal Procedure
  1. Drain the engine coolant and the engine block. Refer to Cooling System Draining and Filling .

    2. Object Number: 660299 Size: SH
  2. Remove the oil filter.

    3. Object Number: 660519 Size: SH
  3. Remove the water pump outlet pipe nuts from the coolant pipe.
  4. Remove the engine wiring harness retainer from the inner stud.

    5. Object Number: 1334852 Size: SH
  5. Remove the oil cooler adapter nuts from the flywheel housing.

    6. Object Number: 1334855 Size: SH
  6. Remove the oil cooler adapter bolts from the oil filter adapter/oil cooler.
  7. Remove the oil cooler adapter.

    8. Object Number: 1336118 Size: SH
  8. Remove the oil filter adapter/oil cooler bolts.
  9. Remove the oil filter adapter/oil cooler.
  10. Remove and discard the oil filter adapter/oil cooler O-ring seals.
  11. If required, clean and inspect the oil filter adapter/oil cooler. Refer to Oil Filter Adapter and Oil Cooler Assembly Cleaning and Inspection .

    12. Object Number: 1336117 Size: SH
  12. Remove the engine coolant pipe.
  13. Remove and discard the coolant pipe O-ring.

Installation Procedure

    Object Number: 1336117 Size: SH
  1. Install a NEW coolant pipe O-ring.
  2. Lubricate the O-ring with clean engine coolant. Do not use oil or grease.
  3. Install the engine coolant pipe.

    4. Object Number: 1336115 Size: SH
  4. Install the engine wiring harness retainer to the inner stud.
  5. Install the water pump outlet pipe nuts to the coolant pipe.

    6. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 870004 Size: SH
  6. Install NEW O-rings (2) to the oil filter adapter/oil cooler.
  7. Lubricate the O-rings with engine oil.
  8. Apply sealer to the O-ring sealing area (1). Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.

    9. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1336118 Size: SH
  9. Install the oil filter adapter/oil cooler.
  10. Install the oil filter adapter/oil cooler bolts.

    11. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 1334855 Size: SH
  11. Install the oil cooler adapter.
  12. Install the oil cooler adapter bolts to the oil filter adapter/oil cooler.

    13. Tighten
    Tighten the bolts to 21 N·m (15 lb ft).


    Object Number: 1334852 Size: SH
  13. Install the oil cooler adapter nuts to the flywheel housing.

    14. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 660299 Size: SH
  14. Install the oil filter.
  15. Fill the cooling system. Refer to Cooling System Draining and Filling .
  16. Inspect the engine oil level and add as necessary.