GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 8001-3 Dial Indicator
    • J 8520 Cam Lobe Lift Indicator Set
    • J 28585 Snap Ring Remover

    Object Number: 28397  Size: SH

    Important: 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 8520 by attaching the threaded rod and the dial indicator holder to one of the bolt holes on the transmission case (7).
  2. Mount the J 8001-3 onto the J 8520 . Index the J 8001-3 to the end of the turbine shaft (502).
  3. Eliminate any slack by pressing down on the turbine shaft (502).
  4. Apply upward pressure on the output carrier with the J 28585 .
  5. Set the J 8001-3 to 0.
  6. Pull up on the turbine shaft (502) while holding the output carrier up with the J 28585 . Proper 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 table in the End Play 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 housing selective thrust washer (218).