GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Impala 🢒 Engine 🢒 Engine Cooling 🢒 Auxiliary Engine Oil Cooler Replacement

Removal Procedure

    Object Number: 537687 Size: SH
  1. Remove the radiator air baffle retainers.
  2. Tilt the rear of the air baffle upward slightly. Slide the air baffle rearward in order to disengage the upper and lower clips of the air baffle from the fascia support.
  3. Remove the radiator air baffle.
  4. Remove the upper bolt from the engine oil cooler.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    6. Object Number: 879442 Size: SH
  6. Remove the 2 lower bolts from the engine oil cooler.

    7. Object Number: 882648 Size: SH
  7. Lower the engine oil cooler below the front bumper.

    8. Object Number: 882645 Size: SH
  8. Remove the engine oil cooler line block connector (3) from the engine oil cooler lines.
  9. Remove the oil cooler lines from the engine oil cooler. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .

Installation Procedure

    Object Number: 879442 Size: SH
  1. Install the engine oil cooler lines to the engine oil cooler. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .

    2. Object Number: 882645 Size: SH
  2. Install the engine oil cooler line block connector (3) to the engine oil cooler lines.

    3. 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 bolt through the engine oil cooler block connector and install nut.

    4. Tighten
    Tighten the bolt to 3.4 N·m (30 lb in).


    Object Number: 882648 Size: SH
  4. Install the engine oil cooler to the vehicle.
  5. Install the 2 lower bolts to the engine oil cooler.

    6. Tighten
    Tighten the bolts to 2 N·m (18 lb in).

  6. Install the upper bolt to the engine oil cooler.

    7. Tighten
    Tighten the bolt to 2 N·m (18 lb in).

  7. Lower the vehicle.

    8. Object Number: 537687 Size: SH
  8. Position the radiator air baffle to the vehicle. Tilt the rear of the air baffle upward slightly. Position the upper clip of the air baffle to the lower edge of the front fascia support C-channel.
  9. Slide the baffle towards the front of the vehicle in order to completely engage the upper and lower clips of the baffle onto the fascia support.
  10. Align the tabs at the rear of the air baffle to the openings in the upper radiator support.
  11. Install the radiator air baffle retainers.
  12. Add the proper amount of engine oil.