GM Service Manual Online
For 1990-2009 cars only
Figure 1:

8.0 Locking Differential


Object Number: 789217  Size: MF
(1)Differential Housing
(2)Differential Pinion Gear Shaft
(3)Differential Pinion Gear Shaft Lock Bolt
(4)Locking Differential Governor and Lockout Assembly Bushings
(5)Locking Differential Clutch Disc Thrust Washer
(6)Locking Differential Clutch Disc Pack (5 Discs)
(7)Locking Differential Clutch Disc Guide (4 Required)
(8)Locking Differential Side Gear
(9)Differential Pinion Gear Thrust Washer
(10)Differential Pinion Gear
(11)Locking Differential Governor Assembly
(12)Locking Differential Latching Bracket Assembly
(13)Locking Differential Thrust Block
(14)Pinion Gear Thrust Washer
(15)Differential Pinion Gear
(16)Locking Differential Side Gear (Cam Faced)
(17)Locking Differential Side Gear (Cam Plate)
(18)Wave Washer
(19)Locking Differential Clutch Disc Guide (4 Required)
(20)Locking Differential Clutch Disc Pack (10 Discs)
(21)Snap Ring
(22)Locking Differential Clutch Disc Thrust Washer
Figure 2:

8.6 Locking Differential


Object Number: 657683  Size: MF
(1)Differential Pinion Gear Shaft
(2)Differential Case
(3)Differential Pinion Gear Shaft Lock Bolt
(4)Locking Differential Lockout Bushings
(5)Locking Differential Clutch Disc Thrust Washer
(6)Locking Differential Clutch Disc Guide
(7)Locking Differential Clutch Disc Set
(8)Differential Pinion Gear Thrust Washer
(9)Differential Pinion Gear
(10)Locking Differential Side Gear
(11)Locking Differential Thrust Block
(12)Differential Pinion Gear
(13)Differential Pinion Gear Thrust Washer
(14)Locking Differential Side Gear, Cam-Faced
(15)Locking Differential Cam
(16)Locking Differential Governor
(17)Wave Washer
(18)Locking Differential Clutch Disc Set
(19)Locking Differential Clutch Disc Guide
(20)Locking Differential Snap Ring Retainer
(21)Locking Differential Clutch Disc Thrust Washer