GM Service Manual Online
For 1990-2009 cars only

Tools Required

    â€¢ J 25025-1 Dial Indicator Mounting Post
    â€¢ 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: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  10. Install the bolt (247).
  11. Tighten
    Tighten the 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 bolt O-ring seals (3) must be replaced.

  16. Install the pump to case bolts (2) with new O-ring seals (3).
  17. Tighten
    Tighten the 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 bolts (2) and O-ring seals (3), in the holes where the J 25025-1 were.
  21. Tighten
    Tighten the bolts to 29 N·m (21 lb ft).