GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 41239-10 Cooler Pipe Seal Remover

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the transmission oil cooler lines from the transmission. Refer to Automatic Transmission Oil Cooler Pipes Replacement .
  3. Install the J 41239-10 into the cooler line seal.

  4. Object Number: 643333  Size: SH
  5. Remove the oil cooler line seals. Use the J 41239-10 .

  6. Object Number: 643345  Size: SH
  7. Remove the cooler line bracket stud.

Installation Procedure

Tools Required

J 41239-1A Cooler Pipe Seal Installer


    Object Number: 643327  Size: SH
  1. Use Mercon® III Automatic Transmission Fluid in order to lube the seal and the transaxle bores thoroughly.
  2. Install the J 41239-1A on the transmission case using cooler line bracket stud hole.

  3. Object Number: 643327  Size: SH
  4. Install a new seal in the case bore.

  5. Object Number: 643345  Size: SH
  6. Press the new seals in. Install the cooler line bracket stud.
  7. Install the transmission oil cooler lines. Refer to Automatic Transmission Oil Cooler Pipes Replacement .
  8. Lower the vehicle.
  9. Check the fluid level.