GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 GTO 🢒 Suspension 🢒 Suspension General Diagnosis 🢒 Front Wheel Bearing and Hub Replacement

Tools Required

J 45059 Angle Meter

Removal Procedure
  1. Remove the front brake rotor. Refer to Front Brake Rotor Replacement in Disc Brakes.
  2. If you are removing the left front hub, turn the steering wheel to the left.

    3. If you are removing the right front hub, turn the steering wheel to the right.


    Object Number: 1353809 Size: SH
  3. Lift the locking tab on the wheel speed sensor connector (4).
  4. Disconnect the connector from the knuckle.
  5. If necessary in order to gain access, remove and discard the 2 nuts and the 2 bolts (1,2) that retain the strut to the knuckle.
  6. Loosen the 3 Allen bolts (3,5) on the knuckle.
  7. If necessary, tap the 3 Allen bolts in order to loosen the hub from the knuckle.
  8. Remove the 3 Allen bolts and the hub from the knuckle.

Installation Procedure

    Object Number: 1353825 Size: SH
  1. Clean the mating surfaces of the knuckle (6).

    2. Verify the mating surfaces are free from burrs.

  2. Clean the mating surfaces of the hub (2,9).

    3. Verify the mating surfaces are free from burrs.

  3. Align the sensor connection on the hub with the hole in the knuckle.
  4. Install the hub to the knuckle.

    5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1353809 Size: SH

    Important: The 3 Allen bolts that retain the hub to the knuckle have thread sealant. Do not re-use the bolts more than 3 times. If in doubt, replace the 3 Allen bolts.

  5. Install the 3 Allen bolts (3,5).

    6. Tighten
    Tighten the bolts to 108 N·m (80 lb ft).

  6. Connect the wheel speed sensor connector (4).

    7. Ensure the locking tab on the connector is secure.

  7. If you removed the 2 nuts and the 2 bolts (1,2) that retain the strut to the knuckle, install NEW nuts and bolts.

    8. Tighten

    1. Tighten the nuts to 85 N·m (63 lb ft).
    2. Tighten the nuts to 100 N·m (74 lb ft).
    3. Use the J 45059 in order to tighten the nuts an additional 90 degrees.
  8. Install the front brake rotor. Refer to Front Brake Rotor Replacement in Disc Brakes.
  9. If you replaced the hub, measure the assembled lateral runout (LRO) of the brake rotor in order to ensure optimum performance of the disc brakes. Refer to Brake Rotor Assembled Lateral Runout Measurement in Disc Brakes.
  10. If the brake rotor assembled LRO measurement exceeds the specification, adjust the LRO to the specification. Refer to Brake Rotor Assembled Lateral Runout Correction in Disc Brakes.