GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 102222  Size: SH
  1. Remove the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement .
  2. Drain the transfer case of fluid.
  3. Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement .
  4. Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  5. Remove the transmission shift control cable clip from the transfer case.
  6. Remove the transmission vent hose clip from the bracket , if equipped.

  7. Object Number: 662044  Size: SH
  8. Disconnect the speed sensor electrical connector.
  9. Disconnect the inline to engine harness electrical connector.
  10. Remove the inline connector from the harness bracket.
  11. Disconnect the encoder motor electrical connector.
  12. Remove the clips from the transfer case brackets.

  13. Object Number: 715667  Size: SH
  14. Disconnect the transfer case vent hose.
  15. Support the transmission with a suitable transmission jack stand.

  16. Object Number: 647997  Size: SH
  17. Remove the transmission mount nuts.

  18. Object Number: 652595  Size: SH
  19. Remove the crossmember bolts.
  20. Remove the crossmember.

  21. Object Number: 715661  Size: SH
  22. Remove the transmission mount bolts
  23. Remove the transmission mount from the adapter.
  24. Support the transfer case with a suitable jack stand.

  25. Object Number: 715663  Size: SH
  26. Remove the transfer case adapter nuts.
  27. Remove the harness bracket.
  28. Important: The following service procedure must be performed with the assistance from another technician.

  29. Remove the transfer case, perform the following:
  30. 22.1. Slide the transfer case straight back toward the rear of the vehicle.
    22.2. Rotate the transfer case so that the front output shaft is above the torsion bar bracket.
    22.3. Rotate the transfer case (with the input shaft slightly lowered) so that the transfer case is parallel to the torsion bar bracket.
    22.4. Lower the transfer case.

Installation Procedure

Important: The following installation procedure must be performed with the assistance of another technician.


    Object Number: 715663  Size: SH
  1. Install the transfer case, perform the following:
  2. 1.1. Raise the transfer case into position (the transfer case should be parallel to the torsion bar bracket).
    1.2. Rotate the transfer case so that it is in line with the adapter.

    Notice: Refer to Fastener Notice in the Preface section.

    1.3. Install the transfer case to the adapter.
  3. Install the transfer case adapter nuts.
  4. Tighten
    Tighten the nuts to 50 N·m (37 lb ft).


    Object Number: 715661  Size: SH
  5. Install the transmission mount.
  6. Install the transmission mount bolts.
  7. Tighten
    Tighten the bolts to 47 N·m (35 lb ft).


    Object Number: 652595  Size: SH
  8. Install the crossmember.
  9. Install the crossmember bolts.
  10. Tighten
    Tighten the bolts to 70 N·m (52 lb ft).


    Object Number: 647997  Size: SH
  11. Lower the transmission/transfer case.
  12. Install the transmission mount nuts.
  13. Tighten
    Tighten the nuts to 40 N·m (30 lb ft).

  14. Remove the transmission jack stand.

  15. Object Number: 715667  Size: SH
  16. Connect the transfer case vent hose.

  17. Object Number: 662044  Size: SH
  18. Install the clips to the transfer case brackets.
  19. Connect the encoder motor electrical connector.
  20. Install the inline connector to the harness bracket.
  21. Connect the inline to engine harness electrical connector.
  22. Connect the speed sensor electrical connector.

  23. Object Number: 102222  Size: SH
  24. Install the transmission vent hose clip to the bracket , if equipped.
  25. Install the transmission shift control cable clip to the transfer case.
  26. Install the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  27. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement .
  28. Fill the transfer case with fluid.
  29. Install the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement .