Thanks White n Slow I appreciate the comments,
For the sound deadening I used Peel and Seal from Lowes. It worked great!!! I noticed a huge difference when I still had the BFG Mud Terrains on, now that I have the Dura Tracs its just quiet, especially in the back, eventually I plan on doing the front floor boards too.
I will be doing some rust repair of our Yukon soon and also going under the T4R to touch things up and use a better product as soon as we have a warmer dry weekend here in Indy.