GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2003 🢒 L300/LW300 🢒 Engine 🢒 Engine Mechanical - 3.0L (L81) 🢒 Engine Oil Cooler Replacement

Removal Procedure
  1. Remove the intake manifold and spacer. Refer to Intake Manifold Replacement .
  2. Remove the coolant intake hose.
  3. Remove the heater hose.

    4. Object Number: 895745 Size: SH
  4. Remove the coolant bridge bolts.
  5. Remove the coolant bridge upper seals.
  6. Remove the coolant bridge.
  7. Remove the coolant bridge lower seals.
  8. Remove the oil feed line from the engine oil cooler.
  9. Remove the return line from the engine oil cooler.
  10. Take note of the 4 seals.
  11. Remove the engine oil cooler line clamp.

    12. Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  12. Raise and support the vehicle.

    13. Object Number: 894746 Size: SH
  13. Remove the crank sensor bolt.
  14. Remove the crank sensor.

    15. Object Number: 894870 Size: SH
  15. Remove the oil filter cap and the filter element.
  16. Remove the oil filter housing.

    17. Object Number: 894781 Size: SH
  17. Remove the oil feed line from the engine block.
  18. Remove the return line from the engine block.
  19. Lower the vehicle.
  20. Remove the oil feed line.
  21. Remove the return line.

    22. Object Number: 894245 Size: SH
  22. Remove the engine oil cooler inlet and outlet nuts.
  23. Remove the engine oil cooler cover bolt.
  24. Remove the engine oil cooler cover.
  25. Remove the engine oil cooler.
  26. Clean the sealing surfaces.

Installation Procedure

    Object Number: 881249 Size: SH
  1. Install the engine oil cooler and O-rings.
  2. Apply a 2 mm (5/64 in) bead of silicone sealer P/N 12378521, or equivalent, in the groove around the engine oil cooler cover.
  3. Install the engine oil cooler cover.

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


    Object Number: 881212 Size: SH
  4. Install the engine oil cooler cover bolts. Torque in the sequence shown.

    5. Tighten
    Tighten the engine oil cooler cover bolt to 30 N·m (22 lb ft).

  5. Install the engine oil cooler inlet and outlet nuts.

    6. Tighten
    Tighten the engine oil cooler inlet and outlet nut to 20 N·m (15 lb ft).

  6. Install the oil feed line.
  7. Install the return line.

    8. Object Number: 894781 Size: SH

    Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  8. Raise and support the vehicle.
  9. Install the oil feed line to the engine block.

    10. Tighten
    Tighten the oil cooler feed and return lines to engine block to 30 N·m (22 lb ft).

  10. Install the return line to the engine block.

    11. Tighten
    Tighten the oil cooler feed and return lines to engine block to 30 N·m (22 lb ft).


    Object Number: 894870 Size: SH
  11. Install the O-ring onto the oil filter housing.
  12. Install the oil filter housing onto the engine block and tighten.

    13. Tighten
    Tighten the oil filter cartridge housing-to-engine to 45 N·m (33 lb ft).

  13. Install the oil filter element, the O-ring, and the oil filter cap onto the housing.

    14. Tighten
    Tighten the oil filter cap to 15 N·m (11 lb ft).


    Object Number: 894746 Size: SH
  14. Install the crank sensor.
  15. Install the crank sensor bolt.

    16. Tighten
    Tighten the crankshaft position sensor bolt to 8 N·m (71 lb in).


    Object Number: 894246 Size: SH
  16. Lower the vehicle.
  17. Install the oil feed and install the return lines to the engine oil cooler. Use 4 new seals.

    18. Tighten
    Tighten the oiler cooler feed and return lines to engine block to 30 N·m (22 lb ft).

  18. Install the engine oil cooler line clamp.

    19. Object Number: 895745 Size: SH
  19. Install the coolant bridge and install the coolant bridge lower seals.
  20. Install the coolant bridge upper seals and the coolant bridge bolts.

    21. Tighten
    Tighten the coolant bridge bolts to 30 N·m (22 lb ft).


    Object Number: 894858 Size: SH
  21. Install the coolant intake housing and install the coolant intake housing O-ring seal.
  22. Install the coolant intake housing bolts.

    23. Tighten
    Tighten the coolant intake housing bolts to 20 N·m (15 lb ft).

  23. Install the intake manifold and spacer. Refer to Intake Manifold Replacement .
  24. Check and fill the engine oil as necessary.