I have a 2000 4x4 Silverado, i just replaced both my front wheel hub bearings, the passenger side was going out so i decided to do both of them. Now i have a really loud squeaking coming form the front end, its very loud at lower speeds, but gets quieter when at higher speeds. The noise is there when speeding up and slowing down, with or without the breaks. The squeaking is louder on the drivers side, but their is still a little noise form the passenger side.
Thanks for the help.

 

I figured it out, it was just the protector plate was a little bent and rubbing on the rotor.

 

Glad you got it figured out!