GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 25025-1 Dial Indicator Mounting Post
    • J 39855 Stator Shaft Seal Installer

    Object Number: 190471  Size: SH
  1. Install the J 25025-1 .

  2. Object Number: 1552969  Size: SH
  3. Remove the J 39855-2 which is part of kit J 39855 .

  4. Object Number: 1745043  Size: SH
  5. Install the pump to drum thrust washer (601).
  6. Use J 36850 or equivalent to retain the washer to the pump.
  7. For pump assemblies with an ISS hole plug (248), lubricate a NEW O-ring (249) with transmission fluid, and install onto the ISS hole plug (248).
  8. Install the ISS hole plug (248) into the ISS hole and align with the mounting hole.
  9. Notice: Refer to Fastener Notice in the Preface section.

  10. Install the retaining bolt (247).
  11. Tighten
    Tighten the retaining bolt to 9-11 N·m (6.6-8.1 lb ft).


    Object Number: 1552970  Size: SH
  12. Install the pump cover to case gasket (6).
  13. Important: The oil pump to case seal is installed after the oil pump assembly, during torque converter installation. Refer to Converter Housing Installation.

  14. Install the oil pump assembly (4) into the case and align all holes properly.

  15. Object Number: 7503  Size: SH

    Important: The pump to case retaining bolt O-ring seals (3) must be replaced.

  16. Install the pump to case retaining bolts (2) with new O-ring seals (3).
  17. Tighten
    Tighten the retaining bolts to 29 N·m (21 lb ft).

  18. Remove the J 25025-1 .

  19. Object Number: 7504  Size: SH
  20. Install the remaining pump to case retaining bolts (2) and O-ring seals (3), in the holes where the J 25025-1 were.
  21. Tighten
    Tighten the retaining bolts to 29 N·m (21 lb ft).