For 1990-2009 cars

## Front Wheel Hub, Bearing, and Seal Replacement 4WD

#### Tools Required

• | J 8092 Driver Handle

• | J 37772 Front Wheel Bearing Race Remover

• | J 37763 Front Wheel Bearing Lock Nut Remover

• | J 37781 Rear Axle Shaft and Brake Prum Remover

• | J 2619-01 Slide Hammer

• | J 6627-A Tie Rod Puller

• | J 37777 Front Wheel Bearing Race Installer

• | J 37774 Wheel Hub Oil Seal Installer

### Removal Procedure

Important: If you are removing the hub in order to gain access to other components, you may remove the hub, the bearings, and the seals together as a unit.

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 spindle.
5. Remove the 6 bolts (1) and the bearing cover (2).
6. Remove the 4 screws (1) and the seal lock washer retainer (2).
7. Use the J 37763 in order to remove the front wheel bearing lock nut (2).
8. Use the J 37781 and the J 2619-01 in order to remove the hub (1) with the bearings and the seals.

Important: If you are replacing the hub, the bearings, or the seals, continue with this procedure.

9. Remove the washer and the outer wheel bearings from the hub.
10. If the vehicle has ABS, remove the wheel speed sensor ring from the hub. Refer to Front Wheel Speed Sensor Reluctor Wheel Replacement in Antilock Brake System.
11. Remove the bearing seals (1,2) from the hub (3).
12. Remove the bearing snap ring retainer (1) from the hub (2).
13. Remove the inner bearings (1) from the hub (2).
14. Use the following tools in order to remove the bearing race from the hub (1):

• | J 8092

• | J 37772

• | A hydraulic press

15. Use the J 6627-A in order to remove the 5 wheel bolts from the hub (1).

### Installation Procedure

1. Align the serrations in the wheel bolts (2) with the serrations in the bolt holes. Use a hydraulic press (1) in order to install the 5 wheel bolts.
2. If the vehicle has ABS, install the wheel speed sensor ring. Refer to Front Wheel Speed Sensor Reluctor Wheel Replacement in Antilock Brake System.
3. Use the J 37777 and a hydraulic press in order to install the bearing race (1) to the hub (2). Press-fit the bearing race until the end of the race contacts the stepped surface of the wheel hub.
4. Apply wheel bearing lubricant, GM P/N 1051344, or the equivalent, to the inner bearings (2).
5. Install the inner bearings (2) to the wheel hub (3).
6. Install the bearing snap ring retainer (1).

Important: Apply lubricant to more than 60 percent of the vacant space of the hollow of the bearing seals.

7. Apply wheel bearing lubricant, GM P/N 1051344, or the equivalent, to the lip portion and to the hollow of the bearing seals.
8. Use the J 37774 in order to install the 2 bearing seals (2) to the hub (1).
9. Apply wheel bearing lubricant, GM P/N 1051344, or the equivalent, to the outer bearings.
10. Install the outer bearings to the hub.
11. Use the J 37781 and the J 2619-01 in order to install the hub (1) with the bearings and the seals to the spindle.
12. Install the bearing washer (3).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

13. Use the J 37763 in order to install the wheel bearing lock nut (2).

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

14. Install the front wheel inner bearing seal lock washer retainer (2). Verify that the screw holes align.
15. Install the 4 screws (1).
16. Clean the bearing cover sealing surface.
17. Clean the front hub sealing surface.
18. Apply General Motors Sealer, GM P/N 1052366, or the equivalent red RTV sealant, to the wheel bearing cover.
19. Install the wheel bearing cover (2) to the front hub (3).
20. Install the 6 bolts (1).

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

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

21. Use a plastic hammer in order to install the cap to the spindle. Tap the collar of the cap until the collar contacts the hub.
22. Install the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
23. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
24. Lower the vehicle.

## Front Wheel Hub, Bearing, and Seal Replacement 2WD

#### Tools Required

• | J 8092 Driver Handle

• | J 37772 Front Wheel Bearing Race Remover

• | J 37763 Front Wheel Bearing Lock Nut Remover

• | J 6627-A Tie Rod Puller

• | J 37777 Front Wheel Bearing Race Installer

• | J 37774 Wheel Hub Oil Seal Installer

### Removal Procedure

Important: If you are removing the hub in order to gain access to other components, you may remove the hub, the bearings, and the seals together as a unit.

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 spindle.
5. Remove the 4 screws (1) and the seal lock washer retainer (2).
6. Use the J 37763 in order to remove the front wheel bearing lock nut (2).
7. Remove the washer and the outer wheel bearings.
8. Remove the hub with the inner wheel bearings and the oil seals.

Important: If you are replacing the hub, the bearings, or the seals, continue with this procedure.

9. If the vehicle has ABS, remove the wheel speed sensor ring from the hub. Refer to Front Wheel Speed Sensor Reluctor Wheel Replacement in Antilock Brake System.
10. Remove the bearing seals (1,2) from the hub (3).
11. Remove the bearing snap ring retainer (1) from the hub (2).
12. Remove the inner bearings (1) from the hub (2).
13. Use the following tools in order to remove the bearing race from the hub (1):

• | J 8092

• | J 37772

• | A hydraulic press

14. Use the J 6627-A in order to remove the 5 wheel bolts from the hub (1).

### Installation Procedure

1. Align the serrations in the wheel bolts with the serrations in the bolt holes.
2. Use a hydraulic press (1) in order to install the 5 wheel bolts (2).
3. If the vehicle has ABS, install the wheel speed sensor ring. Refer to Front Wheel Speed Sensor Reluctor Wheel Replacement in Antilock Brake System.
4. Use the J 37777 and a hydraulic press in order to install the bearing race (1) to the hub (2). Press-fit the bearing race until the end of the race contacts the stepped surface of the wheel hub.
5. Apply wheel bearing lubricant, GM P/N 1051344 (Canadian P/N 993037) or the equivalent, to the inner bearings (2).
6. Install the inner bearings (2) into the wheel hub (3).
7. Install the snap ring retainer (1).

Important: Apply lubricant to more than 60 percent of the vacant space of the hollow of the bearing seal.

8. Apply wheel bearing lubricant, GM P/N 1051344 (Canadian P/N 993037) or the equivalent, to the lip portion and to the hollow of the bearing seals.
9. Use the J 37774 in order to install the 2 bearing seals (2) to the hub (1).
10. Apply wheel bearing lubricant, GM P/N 1051344 (Canadian P/N 993037) or the equivalent, to the outer bearings.
11. Install the outer bearings to the hub.
12. Install the bearing washer.
13. Install the hub with the bearings and the seals to the spindle.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

14. Use the J 37763 in order to install the wheel bearing lock nut (2).

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

15. Install the front wheel bearing seal lock washer retainer (2). Verify that the screw holes align.
16. Install the 4 screws (1).

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

17. Use a plastic hammer in order to install the cap. Tap the collar of the cap until the collar contacts the hub.
18. Install the brake rotor. Refer to Brake Rotor Replacement in Disc Brakes.
19. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
20. Lower the vehicle.