So I posted a post about a clunk towards the front of my 02 xl7. I was wrong. After some searching and lifting the suv off the ground I isolated my problem. It is in the rear end of the vehicle. If the rear tires are off the ground only the right rear spins. Which is normal. While the right rear is spinning im getting a clunk from either the wheel, the axle or from inside the differential. Its hard to pinpoint. If you stop the right rear from turning and make the left rear start pulling the sound stops. So now that I have more info who can help me out.