Dragging noise?

[IwantaSVX]

My car has been making this noise since I had the AWD rebuilt. When it shifts from 1-2 there is this loud dragging noise coming from the rear of the car. I can also hear it ever so slightly if I turn a corner sharp.

I think it has something to do with having the AWD repaired, so I called to get it in to the dealership. I tried doing tight figure 8's and someone suggested. I do NOT feel the car hop like it is binding BUT the tires squeel. Its not like I was going 50mph either. I have also noticed that if I turn out of a parkiing spot tight, every once and a while, I can feel or hear one of the back tires break loose.

No blinking power light or anything.