GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 8001 Dial Indicator Set
    • J 25025-B Dial Indicator Post and Guide Pin Set
    • J 28585 Snap Ring Remover

For equivalent regional tools, refer to Special Tools.


    Object Number: 334755  Size: SH

    Caution: If the front end play check procedures are not closely followed, you may select an incorrect selective thrust washer thickness. This could result in severe damage to the internal transmission components.

  1. Assemble the J 25025-B post and guide pin set by attaching the threaded rod and the dial indicator holder to one of the bolt holes on the transmission case assembly (7).
  2. Assemble the J 8001-3 dial indicator onto the dial indicator holder. Index the J 8001-3 dial indicator to the end of the turbine shaft (502).
  3. Eliminate any slack by pressing down on the turbine shaft (502).
  4. Using J 28585 snap ring remover , apply upward pressure on the output carrier assembly to remove free play in the retainer ring.
  5. Set the J 8001-3 dial indicator to 0.
  6. Pull up on the turbine shaft (502) while holding up the output carrier assembly with the J 28585 snap ring remover . The correct end play is 0.102-0.559 mm (0.004-0.022 in).
  7. Remove the tools from the transmission.
  8. If the front end play measurement is incorrect, refer to the Overrun Clutch Housing Selective Thrust Washer Specifications. Choose a new selective thrust washer based on the original selective washer and the information contained in the table.
  9. Correct the end play by changing the overrun clutch housing selective thrust washer.