Chevrolet Silverado / GMC Sierra. Service manual — part 1359

Fig. 139: View Of Special Tools 21474-18, Thrust Bearing, J 33791-1, J 36616-2, &
Forcing Screw
Courtesy of GENERAL MOTORS CORP.

2. Remove the lower differential carrier assembly bushing by performing the following steps:

1. Install the J 21474-18 (1), the thrust bearing (2), the J 33791-1 (3), the J 36616-2 (4),

and the forcing screw as shown.

2. Remove the lower differential carrier assembly bushing by holding the forcing screw

and tightening the J 21474-18.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 140: View Of Front Axle Actuator
Courtesy of GENERAL MOTORS CORP.

3. Remove the front axle actuator.

4. Remove the inner axle shaft housing to differential carrier assembly bolts.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 141: Identifying Inner Axle Shaft Housing Assembly - Front Drive Axle (8.25
S4WD and 9.25 Axles)
Courtesy of GENERAL MOTORS CORP.

5. Carefully remove the inner axle shaft housing with the inner axle shaft and clutch fork

components from the differential carrier assembly.

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 142: Inner Axle Shaft Housing Components (9.25 Inch)
Courtesy of GENERAL MOTORS CORP.

6. Remove the following components from the inner axle shaft housing (4):

1. The clutch fork inner spring (10)

2. The clutch fork assembly (11)

3. The clutch shaft shim (9)

4. The clutch shaft sleeve (8)

5. The retainer ring (7)

6. The thrust washers (5, 6)

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado