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: 334756  Size: SH
  1. Remove the turbine shaft front oil seal ring (2).

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

  4. Object Number: 28401  Size: SH
  5. Remove the 7 oil pump bolt and seal assemblies (3).
  6. Important: Install the J 37789-A so the bottom clamp portion of the tool is located under the oil pump shaft splines.

  7. Attach the J 37789-A to the oil pump shaft. Tighten the thumb screw.
  8. 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.
  9. Remove the oil pump assembly (4).
  10. Remove the J 37789-A .

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

  14. Remove the selective thrust washer (218).

Tools Required

    • J 23129 Universal Seal Remover
    • J 6125-1B Slide Hammer
    • J 45053 Universal Clamp Press

    Object Number: 334756  Size: SH
  1. Remove the turbine shaft front oil seal ring (2).

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

  4. Object Number: 774704  Size: SH
  5. Remove the 7 oil pump bolt and seal assemblies (3).
  6. Attach the J 45053 to the oil pump shaft. Tighten the bolts.
  7. Turn the handle of the J 45053 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 45053 .

  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).