Sierra 3500 4WD V8-6.0L VIN U (2004)
Case Adapter: Service and Repair
Transfer Case - NVG 261-NP2
Transfer Case Adapter Replacement
Removal Procedure
1. Remove the transfer case.
2. Lower the transmission slightly.
3. Remove the transfer case adapter bolts.
4. Remove the transfer case adapter.
5. Remove the transfer case adapter seal.
6. Remove the transfer case gasket, if necessary.
Installation Procedure
1. Important:
Always use a new gasket and seal for the transfer case and the transfer case adapter. Do not use any type of sealant or adhesive in place of or with
the gasket or the seal.
Install a NEW transfer case adapter seal.
2. Important:
The transfer case adapter must be installed so that the adapter is evenly seated to the transmission before installing the retaining nuts.
Position the transfer case adapter.