Thanks for the link Jimmy, but $1K is definately over my budget. I have been spending so much lately on my car, there is no way I can justify spending that kind of money for a while. It has been nickle and dime-ing me to death. I know that these corporate 8.5 rears are pretty strong as they are. My rear has 3.08 gears, posi carrier, and 28 spline axles. I am just worried that when I go to replace the bearings that they are going to be scarred or something.
This is the first time that I have noticed this sound, and I have taken the car on a few trips up and down the back road. I have been doing some reading and since I have swapped to the C5 front brakes, and got a new master cylinder I may need to have a residual pressure valve for the rear drums if I have a disk/disk Master cylinder. If not I guess the drum brakes will not function as they should. I am wondering now if it is possible that instead of the rear bearings, that the internal pieces of my drum fell apart? I guess I am just going to have to tear into my car on Friday.