GM Service Manual Online
For 1990-2009 cars only

    Object Number: 180675  Size: SH
  1. Remove the input sun gear bearing (330).
  2. Remove the input sun gear to the planetary carrier thrust washer (337).
  3. Remove the planetary carrier assembly (338).
  4. Inspect the planetary carrier (338) and output shaft for damage and distortion.
  5. Inspect the planetary pinions for damage and chipped teeth.

  6. Object Number: 180678  Size: SH
  7. Remove the reaction sun gear and drum (403).
  8. Remove the reaction sun gear bearing and thrust washer (401).
  9. Inspect the reaction sun gear and drum for chipped teeth, worn bushing and scored drum.
  10. Remove the reaction sun gear bearing and thrust washer assembly (401) located in the case or on the bottom of the planetary carrier assembly.

  11. Object Number: 180681  Size: SH
  12. Remove the brake band (404) from the transmission case. Note the location.
  13. Inspect the brake band (404) for cracks, flaking and heat damage.