GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 23129 Universal Seal Remover
    • J 6125-1B Slide Hammer
    • J 37789-A Oil Pump Remover/Installer

    Object Number: 28399  Size: SH
  1. Remove the turbine shaft oil seal ring (2).

  2. Object Number: 28400  Size: SH
  3. Remove the torque converter oil seal assembly (201) using the J 23129 and the J 6125-1B .

  4. Object Number: 28401  Size: SH
  5. Remove the seven pump to case bolt and seal assemblies (3).
  6. Attach the J 37789-A to the oil pump shaft. Tighten the thumb screw.
  7. Turn the handle of the J 37789-A down onto the turbine shaft in order to raise the oil pump assembly (4) out of the case.
  8. Remove the oil pump assembly (4).
  9. Remove the J 37789-A .

  10. Object Number: 28402  Size: SH
  11. Remove the transmission oil pump gasket (6).
  12. Important: The selective thrust washer (218) may be stuck to the pump cover.

  13. Remove the selective thrust washer (218).