Alcon

This may have been covered or posted before, but I can't seem to find and answer. My 01 s2k recently starting making this sound from the rear tire area. I can't pinpoint where or what side it's coming from or for that matter, what is causing it. The rear wheel bearings/hubs and diff fluid were replaced and changed about 10k miles ago. Could it be the bearings/hub went bad again, the diff, or something else? Any pointers would be appreciated!

Found a video that makes the same exact sound:

https://www.youtube.com/watch?v=kb85MzBmQe8


Thanks!

Alcon

Anyone?