GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1503824  Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Lower and support the rear of the exhaust system.
  3. Install a drain pan under the vehicle.
  4. Disconnect the differential cooler pump outlet pipe from the differential cooler. Refer to Differential Cooler Hose/Pipe Quick Connect Fitting.

  5. Object Number: 1503938  Size: SH
  6. Disconnect the transmission fluid cooler inlet pipe from the differential cooler. Refer to Differential Cooler Hose/Pipe Quick Connect Fitting.
  7. Disconnect the transmission fluid cooler outlet pipe from the differential cooler. Refer to Differential Cooler Hose/Pipe Quick Connect Fitting.

  8. Object Number: 1503804  Size: SH
  9. Remove the differential cooler mounting bolts.
  10. Note: Pull the differential oil cooler straight out to ensure the return pipe in the back of the differential oil cooler clears the differential housing.

  11. Remove the differential cooler from the vehicle.

Installation Procedure


    Object Number: 1503804  Size: SH
  1. Install the differential cooler to the vehicle.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the differential cooler mounting bolts.
  4. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1503938  Size: SH
  5. Connect the transmission fluid cooler outlet pipe to the differential cooler. Refer to Differential Cooler Hose/Pipe Quick Connect Fitting.
  6. Connect the transmission fluid cooler inlet pipe to the differential cooler. Refer to Differential Cooler Hose/Pipe Quick Connect Fitting.

  7. Object Number: 1503824  Size: SH
  8. Connect the differential cooler pump outlet pipe to the differential cooler. Refer to Differential Cooler Hose/Pipe Quick Connect Fitting.
  9. Fill the differential fluid. Refer to Rear Axle Lubricant Level Inspection.
  10. Fill the transmission fluid. Refer to Transmission Fluid Check.
  11. Remove the drain pan from under the vehicle.
  12. Raise and secure the rear of the exhaust system.
  13. Lower the vehicle. Refer to Lifting and Jacking the Vehicle.