GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 647997  Size: SH
  1. Remove the transfer case. Refer to Transfer Case Assembly Replacement .
  2. Support the transmission with a suitable jack stand.
  3. Remove the transmission mount nuts.

  4. Object Number: 652595  Size: SH
  5. Remove the crossmember bolts.
  6. Remove the crossmember.

  7. Object Number: 715661  Size: SH
  8. Remove the transmission mount bolts.

  9. Object Number: 648001  Size: SH
  10. Remove the transmission mount.

  11. Object Number: 652614  Size: SH
  12. Remove the transfer case adapter bolts.
  13. Remove the transfer case adapter.
  14. Remove the transfer case seal.

  15. Object Number: 654219  Size: SH
  16. Remove the transfer case gasket, if necessary.

Installation Procedure

Important: If the gasket or the seal becomes damaged, replace it. DO NOT use any type of silicone sealer or liquid gasket maker in place of the seal or gasket.


    Object Number: 652614  Size: SH
  1. Install a NEW transfer case adapter seal.
  2. Install the transfer case adapter.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the transfer case adapter bolts.
  5. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 648001  Size: SH
  6. Install the transmission mount.

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


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


    Object Number: 647997  Size: SH
  13. Install the transmission mount nuts.
  14. Tighten
    Tighten the nuts to 40 N·m (30 lb ft).

  15. Remove the transmission jack.

  16. Object Number: 654219  Size: SH
  17. Install a NEW transfer case gasket, if necessary.
  18. Install the transfer case. Refer to Transfer Case Assembly Replacement .
  19. Check the fluid level. Add fluid if necessary.