GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Blazer - 4WD - RHD 🢒 General Information 🢒 Vibration Diagnosis and Correction 🢒 Front Wheel Hub, Bearing, and Seal Replacement

Removal Procedure

    Object Number: 384869 Size: SH
  1. Raise and support the vehicle with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the tire and the wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Apply the brake pedal.
  4. Remove the drive axle nut.
  5. Remove the drive axle washer.
  6. Remove the rotor. Refer to Front Brake Rotor Replacement in Disc Brakes.

    7. Object Number: 392501 Size: SH
  7. Disengage the wheel drive shaft from the wheel hub and bearing. Place a brass drift against the outer end of the wheel drive shaft in order to protect the wheel drive shaft threads. Sharply strike the brass drift with a hammer. Do not attempt to remove the wheel drive shaft from the wheel hub and bearing at this time.

    8. Object Number: 404313 Size: SH
  8. Remove the wheel speed sensor mounting bolt from the wheel hub and bearing.
  9. Remove the wheel speed sensor from the wheel hub and bearing.

    10. Object Number: 404316 Size: SH
  10. Remove the wheel hub and bearing to the steering knuckle mounting bolts.

    11. Object Number: 404315 Size: SH

    Important: Lay the wheel hub and bearing on the hub bolts on the outboard side. This prevents damage or contamination to the bearing seal.

  11. Remove the wheel hub and bearing to the steering knuckle.
  12. Remove the splash shield from the steering knuckle.

    13. Object Number: 404309 Size: SH
  13. Remove the wheel hub and bearing seal from the wheel hub and bearing.

Installation Procedure

    Object Number: 404309 Size: SH
  1. Install the wheel hub and bearing seal to the wheel hub and bearing.
  2. Install the splash shield to the steering knuckle. Align the shield to the steering knuckle.

    3. Object Number: 404315 Size: SH
  3. Install the wheel hub and bearing to the steering knuckle. Align the threaded holes.

    4. Object Number: 404316 Size: SH

    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.

  4. Install the wheel hub and bearing to the steering knuckle mounting bolts.

    5. Tighten
    Tighten the wheel hub and bearing to the steering knuckle mounting bolts to 105 N·m (77 lb ft).


    Object Number: 404313 Size: SH
  5. Install the wheel speed sensor to the wheel hub and bearing.
  6. Install the wheel speed sensor to the wheel hub and bearing mounting bolt.

    7. Tighten
    Tighten the wheel speed sensor to the wheel hub and bearing mounting bolt to 18 N·m (13 lb ft).

  7. Install the rotor. Refer to Front Brake Rotor Replacement in Disc Brakes.

    8. Object Number: 384869 Size: SH
  8. Apply the brake pedal.
  9. Install the drive axle washer.
  10. Install the drive axle nut.

    11. Tighten
    Tighten the drive axle nut to 140 N·m (103 lb ft).

  11. Install the tire and the wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  12. Lower the vehicle.