Transfer Case Assembly Replacement

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transfer Case Assembly

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement . Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement . Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement . Drain the fluid from the transfer case. Refer to Transfer Case Fluid Replacement . Disconnect the electrical connectors and remove the electrical harness from the transfer case. Disconnect the vent tube from the transfer case. Remove the crossmember. Refer to Transmission Support Crossmember Replacement (2WD 1500/2500) or Transmission Support Crossmember Replacement (4WD 1500/2500) or Transmission Support Crossmember Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember Replacement (4WD 2500 HD/3500) . Remove the transmission mount. Refer to Transmission Mount Replacement (2WD) or Transmission Mount Replacement (4WD) for the 6L50/6L80/6L90 automatic transmission, or Transmission Mount Replacement for Allison automatic transmission.
1	Transfer Case Nut CAUTION: Refer to Fastener Caution . Tighten: 50 N.m (37 lb ft)
2	Fuel Line Bracket
3	Transfer Case
4	Transfer Case Gasket Procedure Install a NEW gasket without the use of any type of sealant or lubricant. For MYC and MYD transmissions (dry cavity) applications only, apply GM P/N 12345879 (Canadian P/N 10953511) or equivalent lubricant meeting GM Specification 9985830 to the input shaft splines.