High/Low Shift Fork Replacement

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: High/Low Shift Fork

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transfer Case High/Low Shift Fork Pin TIP: Drive the pin out using a drift punch and hammer.
2	Transfer Case High/Low Shift Fork TIP: Inspect for wear or damage in the spring seat locations. The component must be replaced if damage is found.
3	Transfer Case High/Low Shift Fork Spring Assembly TIP: The component must be replaced if the following conditions exist: Assemble with the cut corners of the spring assembly facing the shift fork. The cam lobes are worn or rough The spring is broken
4	Transfer Case Two/Four Wheel Drive Actuator Cam Retaining Ring
5	Transfer Case Two/Four Wheel Drive Actuator Cam Spacer
6	Transfer Case Two/Four Wheel Drive Actuator Cam
7	Transfer Case High/Low Shift Fork - Service - Pin Apply a small amount of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the shaft of the pin before installation. Press the pin into the control actuator shaft using a brass drift until bottom.
8	Transfer Case Shift Fork Shaft Guide Screw CAUTION: Refer to Fastener Caution . TIP: Apply threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the screw threads. Tighten 5 N.m (44 lb in).