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Wheel Bearings Diagnosis (Tapered): Galling

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Galling Pattern
G02501584Courtesy of GENERAL MOTORS CORP.

The metal smears on the roller ends are due to overheating, lubricant failure, or lubricant overload.

  1. Check the seals.
  2. Check for proper lubrication.
  3. Clean all of the parts and the housings.
  4. Replace the bearing. Refer to WHEEL HUB, BEARING & SEAL REPLACEMENT (AWD) or WHEEL HUB, BEARING & SEAL REPLACEMENT (RWD) .
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