Front Wheel Hub, Bearing, and Seal Replacement 4WD

Tools Required

Important: You may replace the following components together as an assembly:

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
3. If the wheel center cap remains on the hub, remove the wheel center cap.
4. Remove the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.



5. Remove the 6 bolts (1) and the axle hub lock cover (2) with the wheel bearing cap.
6. Remove the drive shaft retention ring.
7. Remove the wheel drive shaft washer.



8. Remove the 4 screws (1) and the bearing adjustment nut washer (2).



9. Use the J 37763 in order to remove the wheel bearing adjustment nut (2).
10. Remove the wheel bearing washer.



11. If necessary, use the J 37781 and the J 2619-01 in order to remove the following components:

•	The hub (1)

•	The wheel bearings

•	The wheel bolts

•	The speed sensor reluctor wheel, if equipped

Important: Hold the inner race in the proper position in the hub.

1. Install the hub (1) to the spindle (2).
2. Verify the wheel bearing races and the hub are in the proper position on the spindle.
3. Install the wheel bearing washer (3).

Notice: Refer to Fastener Notice in the Preface section.




4. Use the J 37763 in order to install the wheel bearing adjustment nut (2).

Tighten
Tighten the nut to 216 N·m (159 lb ft).




5. Install the bearing adjustment nut washer (2). Verify that the screw holes align.
6. Install the 4 screws (1).
7. Apply chassis lubricant, GM P/N 12377985 (Canadian P/N 88901242) or an equivalent lithium lubricant, to the wheel drive shaft washer and to the spindle.
8. Install the wheel drive shaft washer to the end of the drive axle.
9. Install the drive shaft retention ring to the end of the drive axle. If necessary, pull the wheel drive shaft slightly in order to seat the retention ring.
10. Clean the axle hub lock cover sealing surface.
11. Clean the hub sealing surface.
12. Apply Red RTV Silicone Sealant, GM P/N 12378478 (Canadian P/N 88900041) or equivalent, to the axle hub lock cover.



13. Install the axle hub lock cover (2) to the front hub (3).
14. Install the 6 bolts (1).

Tighten
Tighten the bolts to 25 N·m (18 lb ft).

Important: If the wheel bearing cap does not fit or is damaged, install a new wheel bearing cap.

15. If necessary, use a plastic hammer in order to install the wheel bearing cap to the axle hub lock cover. Tap the collar of the cap until the collar contacts the cover.
16. Install the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
17. Install the wheel center cap.
18. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
19. Lower the vehicle.

Front Wheel Hub, Bearing, and Seal Replacement 2WD

Tools Required

J 37763 Front Wheel Bearing Lock Nut Remover

Important: You may replace the following components together as an assembly:

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
3. Remove the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
4. Remove the cap from the hub.



5. Remove the 4 screws (1) and the bearing adjustment nut washer (2).



6. Use the J 37763 in order to remove the wheel bearing adjustment nut (2).
7. Remove the wheel bearing washer.
8. Remove the following components:

•	The hub (1)

•	The wheel bearings

•	The wheel bolts

•	The speed sensor reluctor wheel, if equipped

Important: Hold the inner race in the proper position in the hub.

1. Install the hub (1) to the spindle.
2. Verify the wheel bearing races and the hub are in the proper position on the spindle.
3. Install the wheel bearing washer.

Notice: Refer to Fastener Notice in the Preface section.

4. Use the J 37763 in order to install the wheel bearing adjustment nut (2).

Tighten
Tighten the nut to 216 N·m (159 lb ft).




5. Install the bearing adjustment nut washer (2). Verify that the screw holes align.
6. Install the 4 screws (1).

Important: If the cap does not fit or is damaged, install a new cap.

7. Verify the sealing surface of the cap is clean and not damaged.
8. Apply Red RTV Silicone Sealant, GM P/N 12378478 (Canadian P/N 88900041), or the equivalent sealant, to the sealing surface of the cap.
9. Use a plastic hammer in order to install the cap. Tap the collar of the cap until the collar contacts the hub.
10. Install the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
12. Lower the vehicle.