I know I don't post on here much, but when i saw this thread, I wanted to put my two cents in ... I had a 2010 Tahoe with the max towing package pretty much what you have now.. it had a rating of 8500Lbs. also .
With the short Wheel base and low payload rating you will be white knuckling the whole time. I bought the Tahoe for the seating capacity thinking since the new camper I had on order would sleep 8 people and was only 26.5 Ft and the dry weight would be 5500 lbs. That I would be find. WRONG .. I have over 2 dozen cat Scale weight-ins .. Your Yukon with you (driver only) and a full tank of gas weighs approx. 6100 lbs. give or take.. it will leave you with about 1100 - 1200 lbs. of payload.
Any travel trailer you buy is going to put about 450 - 750 lbs. of weight on the back of your Yukon. not including the hitch weight . It will leave you with about 300 - 500 lbs left for passengers. And the short wheel base will have you all over the place...
I would look at some pretty small ultralite TT or a Hybrid. Im only talking from experience and my own opinion.
The Yukon has a 2500 version along with the chevy 2500 suburban . its always good to do your home work before you buy.. i learned my lesson
And for some reason the ford expedition has a pretty good tow rating, but it also has a longer wheelbase.
I kept the tahoe as a spare car , and bought a crew cab pickup instead. i finally traded in the the tahoe in 2012 with 6500 miles on it... I learned a expensive lesson.
good luck