For 1990-2009 cars

Application | Type of Material | GM Part Number
--- | --- | ---
Transfer Case Oil | Lubricant | Refer to Electronic Parts Catalog
Transfer Case Housing | Sealant | Refer to Electronic Parts Catalog
Transfer Case Rear Extension Bolt | Threadlock | Refer to Electronic Parts Catalog
Transfer Case Rear Extension Bolt Holes | Thread Cleaner | Refer to Electronic Parts Catalog
Transfer Case Rear Output Shaft Flange Bolts | Threadlock | Refer to Electronic Parts Catalog
Transfer Case Rear Output Shaft Flange Bolt Holes | Thread Cleaner | Refer to Electronic Parts Catalog