GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2002 🢒 Eldorado 🢒 Engine 🢒 Engine Cooling 🢒 Engine Oil Cooler Hose/Pipe Replacement

Removal Procedure
  1. Remove the upper filler panel. Refer to Filler Panel Replacement - Upper in Body Front End.

    2. Object Number: 739341 Size: SH
  2. Disconnect the engine oil cooler inlet pipe fitting (1) from the radiator.
  3. Remove the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.

    4. Object Number: 739340 Size: SH
  4. Complete the following in order to remove the engine oil cooler outlet pipe from the radiator:
    5. 4.1. Depress the tabs inward.
    4.2. Pull outward to remove the engine oil cooler outlet pipe.

    Object Number: 739339 Size: SH
  5. Disconnect the engine oil cooler fittings (1, 2) from the engine oil filter adapter.
  6. Remove the engine oil cooler pipes from the vehicle.

Installation Procedure

    Object Number: 739342 Size: SH
  1. Make sure the O-rings are properly positioned to the engine oil cooler pipes.
  2. Position the engine oil cooler pipes to the vehicle.

    3. Object Number: 739339 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the engine oil cooler fitting with the long nut (1) to the engine oil filter adapter.
  4. Install the engine oil cooler fitting with the short nut (2) to the engine oil filter adapter.

    5. Important: Ensure the engine oil cooler pipes are positioned horizontally and parallel to each other while tightening.

    Tighten
    Tighten the engine oil cooler pipe fittings to 18 N·m (13 lb ft).


    Object Number: 739340 Size: SH

    Important: Ensure that the engine oil cooler outlet pipe is routed under the A/C compressor hose.

  5. Push the engine oil cooler outlet pipe fully into the engine oil cooler quick connect fitting, until a "click" is heard.
  6. Tug gently on the cooler pipe to ensure proper retention.
  7. Install the front air deflector. Refer to Front Air Deflector Replacement in Body Front End.
  8. Lower the vehicle.

    9. Object Number: 739341 Size: SH
  9. Install the engine oil cooler inlet pipe to the radiator.

    10. Important: Ensure the engine oil cooler pipe is positioned at a 10 degrees angle (2) while tightening.

    Tighten
    Tighten the engine oil cooler pipe fitting to 18 N·m (13 lb ft).

  10. Install the upper filler panel. Refer to Filler Panel Replacement - Upper in Body Front End.
  11. Check the engine oil level.