How big a trailer can I easily tow

I have a 2005 Suburban with the 5.3 and 3.42 rear end. Being a two wheel drive, it weighs very close to your vehicle. I have pulled a 5,200lb 28' TT many miles, but mostly in the south, and not in the mountains. I would not be comfortable with any more weight. With the 4sp auto, I run in 3rd gear. 60 MPH is 2,300 RPM. On anything more than a gradual hill, it will shift to 2nd, which is 3,600 RPM. Certainly doesn't hurt anything, but is kind of annoying. You can minimize this greatly by not using cruise control, and letting the rig speed up some downhill, and lose speed uphill. My rig is pretty stable (Reese SC hitch, 800lbs bars), but I have a 130" wheelbase. A short wheelbase Yukon will not be as stable. I also pull a 5,300lb boat, which is easier. In either case, I would not want any more weight. I would consider 6,200 lbs out of the question (unless I had a Hensley or Pro Pride hitch, and changed the rear end to a 4.10).

By the way, on my Suburban, the max tow rating is 7,400lbs. It is 8,400 with the 4.10 rear end.

CT51