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Wheel Bearings Diagnosis

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required 

J 8001  Dial Indicator

The following procedure describes how to inspect the wheel bearing/hub for excessive looseness. If you are inspecting the wheel bearing/hub for excessive runout, refer to HUB/AXLE FLANGE AND WHEEL STUD RUNOUT INSPECTION .

Fig 1: Inspecting Wheel Bearing/Hub For Excessive Looseness
G01673284Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
    IMPORTANT: If you are inspecting the FRONT wheel bearing/hub, support the front of the vehicle by the lower control arms in order to load the lower ball joint.
  2. Mount and secure the J 8001  to a stand.
  3. Ensure that the J 8001  contacts the vertical surface of the wheel as close as possible to the top wheel stud.
  4. Push and pull on the TOP of the tire.
  5. Inspect the total movement indicated by the J 8001  .
  6. If the measurement exceeds 0.127 mm (0.005 in), replace the wheel bearing/hub. Refer to WHEEL BEARING/HUB REPLACEMENT - FRONT .
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