All-
Hey.. Since I know a lot of you are far more mechanically inclined than I am.. Wanted to throw this out there. Recently, I've noticed a pretty pronounced Grinding, Whirring sound coming from the front end of my Silverado when in 4WD. I only engage the 4WD when on snow/ice pack or rain.



Recently these things have all been changed:
Brand New Hub Assemblies in Front
New Calipers up Front
New Brake Pads up front.

It seems the sound is coming from my driver front at the moment, but I've also heard it previously on the Passenger Front as well.
I was hoping the hub change would have fixed it- but no luck. Today riding down the road it sounded horrible.

Any advice?
Thanks!!