I just noticed a loud clunk when I was turning my steering wheel while sitting still. It also happened a couple times going in reverse and turning the wheel. And a couple times while turning into my driveway at a slow speed. It's not the brake pad shift clunk. This one is loud and feels like something bad is going to happen if I don't fix it ASAP. Handles fine. No drift or sway when I turn. About to put Bilsteins on so it would be nice to fix all at once. I just took a ton of pictures of both sides behind wheels in front. Anyone see something that I don't?

Here's the album with all the pictures: Clunk Gallery

 

Get under it while you have someone else work the steering....sounds like the steering rack bushings are shot. Evidenced by the rack moving from side to side. Check the lower ball joints too....they are known to fail.

You have a very cracked rubber brake hose. http://imageshack.us/photo/my-images/580/img3959t.jpg/

 

I see the problem!...There's no axle under the front of that truck!!
But seriously I would get under it and listen while somebody else turns the wheel. (like previously mentioned)

 

Just found out its the lower ball joint.