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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 574 (Suspension System General Diagnosis) >> Diagnostic Information And Procedures >> Wheel Bearings Diagnosis

Wheel Bearings Diagnosis

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Did you review the General Description and perform the necessary inspections? If yes, go to step  2. If no, go to SYMPTOMS - SUSPENSION GENERAL DIAGNOSIS .
  2. Road test the vehicle in order to verify the customer's complaint. Does the vehicle operate normally? If yes, system is OK. If no, go to step  3.
  3. Raise and support the vehicle. Inspect for tire or wheel damage. Refer to TIRE AND WHEEL ASSEMBLY RUNOUT MEASUREMENT - ON-VEHICLE in VIBRATION DIAGNOSIS AND CORRECTION in TIRES AND WHEELS article. Did you find and correct the condition? If yes, go to step  7. If no, go to step  4.
  4. Install the J 39570 Chassis Ear. Road test the vehicle to verify the location of the wheel bearing noise. Did you locate the source of the wheel bearing noise? If yes, go to step  6. If no, go to step  5.
  5. Support the vehicle by the lower control arms or the rear axle to prevent movement during wheel bearing/hub inspection. Mount and secure the J 8001 Dial Indicator. Ensure that the dial indicator contacts the vertical surface of the wheel as close as possible to the top wheel stud. Push and pull on the top of the tire in order to inspect the total travel indicated by the dial indicator. Is the measurement greater then 0.27 mm (0.005 in)? If yes, go to step  6. If no, system is OK.
  6. Replace the wheel bearing. Refer to WHEEL BEARING/HUB REPLACEMENT - FRONT in FRONT SUSPENSION article or WHEEL BEARING/HUB REPLACEMENT - REAR for Rear Suspension. Did you complete the repair? If yes, go to step  7.
  7. Road test the vehicle to verify the repair. Does the vehicle operate normally? If yes, system is OK. If no, go to step  3.
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