Glad to hear its gone..... How much lift?

 

Kore Recon, 3 up front 1 in back.

 

Hello, new here and to owing a diesel. I have recently experienced vibration when I shift into 4wd hi, only happens when I let up and coast. 2wd works great and 4LO can't get going fast enough. Truck is a 2002 2500 auto with 33,000 miles on the clock. I have an appointment with the dealer Weds to have them look at it. But I would like to go with some what of an idea of what it may be. Any help would be great
Thanks
I crawled under and checked the front drive shaft looks like one of the u-joints is bad. Any recommendation as to what kind I should put in?