My rear driver side knuckle bearing needs replacing in a bad way. We have located and bought new bearings, and have figured out how to take it apart and get to it, but we can not get the metal casing to the old one out. Before trying to do this on our own we called all over our county, even the GM dealership. Everyone we talked to said they do not change these, so basically we were out of luck. Is there any tips to getting this casing out? Any help would be greatly appreciated!