Special Tools

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

J 22912-01 Split Plate Bearing Puller
J 45232 Adjuster Bearing Replacer (Left Side)

Measure and record the overall length of the locking differential side gear assembly from the front of the locking differential side locking differential side gear to thrust washer.
Remove the guide clips.

Fig 1: Identifying Thrust Sleeve & Special Tools J 45232 & J 22912-O1

Courtesy of GENERAL MOTORS COMPANY

Using the J 22912-01 puller (2), J 45232 replacer (1) and a hydraulic press, remove the locking differential side gear thrust sleeve.

Fig 2: Disassembled View Of Locking Differential Side Gear Components

Courtesy of GENERAL MOTORS COMPANY

Remove the locking differential clutch disc thrust washer (7).
Remove the locking differential side gear thrust sleeve (6).
Remove the locking differential clutch disc set (1).

NOTE:

The locking differential clutch disc guide is NOT serviced separately. It is serviced with the locking differential clutch disc assembly.

Remove the locking differential clutch disc guide.
Disassemble the locking differential clutch disc assembly (1).