GM Service Manual Online
For 1990-2009 cars only

Transmission Case


    Object Number: 1538834  Size: SH
  1. Clean the transmission case in a suitable solvent. Air dry the transmission case.
  2. Clean all sealant material from retainer bolt threads.
  3. Inspect the transmission case for the following conditions:
  4. • Cracks
    • Scratches
    • Damaged threads
    • Burrs
    • Nicked mounting surfaces
    • Damaged sealing surfaces
    • Damaged front or rear bearing bores
  5. Inspect the machined mating surfaces for flatness with a straight edge.
  6. Inspect the bearing races and bores for wear, scratches or grooves.
  7. Inspect the bushing for excessive wear.
  8. Use a fine mill file to dress minor scratches or burrs.
  9. If scratches, or grooves or scoring cannot be removed by hand with a soft stone or crocus cloth, replace the component.
  10. Clean up damaged threads with the correct size tap.
  11. Replace a cracked housing.
  12. Replace worn bushings.

Adapter Plate


    Object Number: 1887605  Size: SH
  1. Clean the adapter plate parts with a suitable solvent. Air dry all the parts.
  2. Inspect the adapter plate parts for the following conditions:
  3. • Cracks
    • Replace the adapter plate parts if cracks are found.
    • Scratches
    • Burrs
    • Nicked mounting surfaces
    • Damaged sealing surfaces
    • Damaged front or rear bearing bores
  4. Inspect the machined mating surfaces for flatness. Check the mating surfaces with a straight edge.
  5. Inspect the bearing races and bores for wear, scratches or grooves.
  6. Inspect the bushing for excessive wear. Replace worn bushings.
  7. Use a fine mill file to dress minor scratches or burrs.
  8. If scratches, or grooves or scoring cannot be removed by hand with a soft stone or crocus cloth, replace the component.