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Chevrolet Silverado / GMC Sierra. Manual - part 1344
Fig. 87: View Of Actuator & Components
Courtesy of GENERAL MOTORS CORP.
1. Apply sealant to the threads of the actuator (1) for the 8.25 inch axle (2) or (3) for the 9.25
inch axle (4). Use the correct sealant. Refer to Sealers, Adhesives, and Lubricants.
2. Install the actuator (1 or 3).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Tighten: Tighten the actuator to 20 N.m (15 lb ft).
3. Connect the electrical connector to the actuator.
4. Install the engine shield, if equipped. Refer to Engine Shield Replacement .
5. Lower the vehicle.
FRONT DIFFERENTIAL DRIVE PINION FLANGE/YOKE, SEAL, AND DUST DEFLECTOR
REPLACEMENT
Tools Required
J 8614-01 Flange and Pulley Holding Tool. See Special Tools.
J 36366 Pinion Oil Seal Installer
Removal Procedure
1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Drain the drive axle. Refer to Front Axle Lubricant Replacement.
3. Remove the tire and wheel assemblies. Refer to Tire and Wheel Removal and
Installation .
4. Remove the brake calipers. Refer to Front Brake Caliper Replacement (JH6, JH7) or
Front Brake Caliper Replacement (JD9, JF3, JF7) .
5. Remove the engine shield, if equipped. Refer to Engine Shield Replacement .
6. Reference mark the relationship of the propeller shaft to the front axle pinon yoke.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 88: Front Axle Pinion Yoke, Propeller Shaft Universal Joint, Yoke Retainer &
Bolts
Courtesy of GENERAL MOTORS CORP.
7. Remove the yoke retainer bolts (6) and the yoke retainers (7) from the front axle pinion
yoke (1).
NOTE:
When removing the propeller shaft, do not attempt to remove
the shaft by pounding on the yoke ears or using a tool between
the yoke and the universal joint. If the propeller shaft is
removed by using such means, the injection joints may fracture
and lead to premature failure of the joint.
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
8. Disconnect the propeller shaft universal joint (2) from the front axle pinion yoke (1).
Wrap the bearing caps with tape in order to prevent the loss of bearing rollers.
9. Support the propeller shaft and move out of the way as necessary.
Fig. 89: Measuring Pinion Rotation Torque - Front Axle
Courtesy of GENERAL MOTORS CORP.
10. Measure the torque required in order to rotate the pinion. Use an inch-pound torque wrench.
Record the torque value for reassembly. This will give the combined preload for the
following components:
2008 Chevrolet Silverado 1500
2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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