clunk from rear while turning left

[rfuree11]

i did a search, but couldnt find anything. Whenever I make a left turn while accelerating (even with a little gas), i get a clunk noise from the rear end and it goes through the whole truck. It seems like there is pressure being built up between two parts and then it is being released.
any ideas?

 

[EBInterceptor]

Slip yoke binding maybe? Does it make noise when stopping too? Kind of like a thud? I need to drop my driveshaft and lube it up. I did a quick-fix writeup a while back if you do a search you could probably find it. Should be labeled something along the lines of lubing the slip yoke. If the temporary fix works, then you'll know that the problem is there. Otherwise drop the drive shaft and do it correct the first time.

 

[rfuree11]

well, it got much worse. It now clunks going either left or right and multiple times. It even does it sometimes when im going straight. I went underneath to check it out and it looks like i blew a seal at the back of the xfer case(click on pics for bigger versions:



anyone know whats going on? Im gonna be calling a tranny shop soon cause i cant do this kind of stuff myself

 

[rfuree11]

its official....the xfer case is shot :frustrate