Bobby Nigam

So I am kinda in the same boat. I am looking to pull a travel trailer around 5700 pounds. I wanted to upgrade my 2018 Suburban but can't find a way to do it like other manufacturers do. It may cost $2500-5000 dollars to do it but believe it or not, my depreciation would be more than that to trade for a newer better equipped one for. Any suggestions o increasing capacity? I did add an aftermarket Curt brake controller that made a world of a difference. I have the Premier package on the vehicle, so I like all the bells and whistles of the car. The axle ratio is the problem at 3.08. Thank you in advance.