GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 26958 Output Shaft Aligning & Loading Tool
    • J 26958-10B Adaptor Plug
    • J 25025-7A Post
    • J 8001 Dial Indicator
    • J 28585 Snap Ring Remover

    Object Number: 15883  Size: SH
  1. Rotate the transmission so that the final drive is facing upward.
  2. Important: Leave J 26958-10B adaptor in position.

  3. Remove J 26958 which was installed in order to perform the Low Roller Clutch Race End Play Check procedure.
  4. Install J 25025-7A and J 8001 with the indicator stem touching J 26958-10B .
  5. Set the dial indicator so that the pointer is at zero.

  6. Object Number: 409457  Size: SH
  7. Insert J 28585 into the oil weir hole, and gently pry up on the pinion cross pin.
  8. The dial indicator should read 0.12-0.82 mm (0.005-0.032 in).
  9. Record the reading.
  10. In order to select the correct final drive thrust washer (680), refer to the Selective Thrust Washer table in End Play Specifications .

Tools Required

    • J 26958 Output Shaft Aligning & Loading Tool
    • J 26958-10B Adaptor Plug
    • J 25025 Post
    • J 8001 Dial Indicator
    • J 28585 Snap Ring Remover

    Object Number: 15883  Size: SH
  1. Rotate the transmission so that the right side axle seal (117) is facing upward.
  2. Important: Leave J 26958-10B adaptor in position.

  3. Remove J 26958 which was installed in order to perform the Low Roller Clutch Race End Play Check procedure.
  4. Install J 25025 and J 8001 with the indicator stem touching J 26958-10B .
  5. Set the dial indicator so that the pointer is at zero.
  6. Insert J 28585 into the case through the governor bore, and gently pry up on the governor drive gear (679).
  7. The dial indicator should read 0.12-0.82 mm (0.005-0.032 in).
  8. Record the reading.
  9. Select the correct final drive thrust washer (680) from the chart below.