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Chevrolet Silverado / GMC Sierra. Manual - part 1489
6. Install the 2nd non-carbon eared disc (8).
7. Install the 1st splined disc (9).
8. Install the 3rd non-carbon eared disc (10).
9. Install the 2nd splined disc (11).
10. Install the 4th non-carbon eared disc (12).
11. Install the 3rd splined disc (13).
12. Install the 5th non-carbon eared disc (14).
13. Align the splined discs with the teeth on the cam plate in order to compress the clutch
disc assembly.
3. Install the thrust sleeve (15) onto the cam side gear.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 280: Installing Thrust Sleeve Onto Cam Side Gear (9.5 Inch Axle)
Courtesy of GENERAL MOTORS CORP.
4. Install the thrust sleeve onto the cam side gear using a hydraulic press and the J 29710 , if
necessary, until the thrust sleeve is fully seated onto the locking differential cam gear.
5. If the cam side gear or the thrust sleeve has been replaced, measure the overall length of the
gear assembly by doing the following:
1. Place the locking differential clutch disc thrust washer on top of the thrust sleeve.
2. Measure the overall length of the gear assembly from the front of the cam side gear to
the back of the locking differential clutch disc thrust washer.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
3. Compare this measurement to the measurement obtained during disassembly.
4. If the new reading is more than 0.762 mm (0.003 in) higher or lower than the original,
select a locking differential clutch disc thrust washer that will return the reading
closest to the original reading.
6. Align the ears of all the clutch discs.
7. Install the guide clips to the clutch disc assembly.
Apply chassis grease, GM P/N 12377985 (Canadian P/N 88901242) or equivalent, to the
guide clips in order to hold the clips in place on the disc ears.
LOCKING DIFFERENTIAL CLUTCH DISC ASSEMBLY ASSEMBLE (8.6 INCH AXLE)
Fig. 281: View Of Locking Differential Clutch Disc Assembly (8.6 Inch Axle)
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Courtesy of GENERAL MOTORS CORP.
1. Apply axle lubricant, GM P/N 12378261 (Canadian P/N 10953455) or equivalent meeting
GM Specification 9986115, to the surface of each disc.
2. Assemble the right side or bell-end side clutch disc assembly as follows:
1. Install the two-sided carbon eared disc (2) to the side gear (1).
2. Install the 1st splined disc (4).
3. Install the 2nd splined disc (5).
4. Install the one-sided carbon eared disc (6).
5. Install the guide clips (3) to the clutch discs (2, 4-6).
Apply chassis grease, GM P/N 12377985 (Canadian P/N 88901242) or equivalent, to
the guide clips in order to hold the clips in place on the disc ears.
LOCKING DIFFERENTIAL CLUTCH DISC ASSEMBLY ASSEMBLE (9.5 INCH AXLE)
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Rear Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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