GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 38588-1 Guide Pins
    • J 38557 Converter Housing to Pump Assembly Alignment Tool

    Object Number: 203386  Size: SH
  1. Install the converter housing oil seal (3).
  2. 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.

  3. Install the oil seal screws (2).
  4. Tighten
    Tighten the bolts to 3 N·m (26 lb in).


    Object Number: 175274  Size: SH
  5. Place the converter housing (6) onto the oil pump assembly (10).
  6. Install J 38588-1 into the outer bolt holes.
  7. Install the converter housing to oil pump bolts (5) finger tight only.

  8. Object Number: 175275  Size: SH

    Notice: Failure to use J 38557 will cause damage to the transmission oil pump when the transmission is operated after assembly.

    Important: Install J 38557 with the inner sleeve extended. Tightening J 38557 will cause the inner sleeve to move upward causing the outer sleeve to tighten against the pump, centering it.

  9. Install J 38557 . J 38557 should rest on the oil pump drive gear. Tighten J 38557 by holding the knurled knob and turning the handle.
  10. Tighten the oil pump bolts (5).
  11. Tighten
    Tighten the oil pump bolts (5) to 20 N·m (15 lb ft) in an alternating pattern.

  12. Remove the tools.

  13. Object Number: 175371  Size: SH
  14. Install the oil pump to adapter case seal (8).