Sorry, i missed that. I was talking in reference to the OP. Heck, i didn't even realize that this thread is 9 months old.

 

I am having the exact same problem on my 04 2500 2x4! And the alignment shop pulled everthing apart and isolated it to the lower end of my coil spring and they sprayed sum high dollar lube and it still didn't fix it! So they called sum other out of town alignment shops and a couple have ran across the problem and the only fix they found was to cut sum garden hose I guess and wrap the bottom of the coil spring! So I guess that is my next step!