When driving there appears to be a slight "sqweel" coming from one of the wheels as if something was dragging. Any Ideas of what this might be?

The truck does not pull to one side or the other, and the brakes feel fine.

 

Best thing to do is to dig in to it. It could be a number of things Parking Brake not fully release, to bearings, rotors, or pads. You won't really know until you start investigating the noise.