GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the floor panel tunnel reinforcement. Refer to Floor Panel Tunnel Panel Reinforcement Replacement .
  3. Install a drain pan under the vehicle.
  4. Important: 

       • The front transmission fluid cooler pipes connect to the rear transmission fluid cooler pipes near at the rear of the engine next to the starter motor.
       • Cap or plug the open transmission fluid cooler pipes immediately to prevent system contamination.


    Object Number: 1503871  Size: SH
  5. Disconnect the rear transmission fluid cooler upper pipe from the front transmission fluid cooler upper pipe. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .

  6. Object Number: 1503776  Size: SH
  7. Disconnect the rear transmission fluid cooler upper pipe from the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .

  8. Object Number: 1503852  Size: SH
  9. Remove the transmission fluid cooler pipes clip.

  10. Object Number: 1503772  Size: SH
  11. Remove the rear transmission fluid cooler upper pipe retaining bolts from the driveline support.
  12. Important: Spread the clamps holding the two pipes together to remove the pipe from the vehicle.

  13. Disconnect the rear transmission fluid cooler upper pipe from the vehicle.

Installation Procedure


    Object Number: 1503776  Size: SH
  1. Connect the rear transmission fluid cooler upper pipe to the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .

  2. Object Number: 1503871  Size: SH
  3. Connect the rear transmission fluid cooler upper pipe to the front transmission fluid cooler upper pipe. Refer to Transmission Fluid Cooler Hose/Pipe Quick-Connect Fitting Disconnection and Connection .

  4. Object Number: 1503852  Size: SH
  5. Install the transmission fluid cooler pipes clip.
  6. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1503772  Size: SH
  7. Install the rear transmission fluid cooler upper pipe retaining bolts to the driveline support.
  8. Tighten
    Tighten the bolt to 12 N·m (9 lb ft).

  9. Check the transmission fluid level, add fluid if necessary. Refer to Transmission Fluid Level Inspection .
  10. Remove the drain pan.
  11. Install the floor panel tunnel reinforcement. Refer to Floor Panel Tunnel Panel Reinforcement Replacement .
  12. Lower the vehicle. Refer to Lifting and Jacking the Vehicle .