Good like beauty is in the eye of the beholder. Having said that we tow a Suburban as a FROG when we want to haul lots of people and/or stuff when we arrive at our destination. Same thing as the Avalanche but hold more people. Get the manual out and check the towing procedure. Not all GM 4 WD are towable. It scales in @ 5700 lbs so we are just under our limit of 6000 lbs. IMHO and based on my milage logs it will csot you 1/2 to 3/4 MPG to tow.
Also check you hitch attaching bolts and nuts very often. I did not not and this is what I got.
hitch issue
or
hitch1 problems
My hitch peoblems was on a 02 DSDP and Newmar would not even give me the time of the day. I am filing a complaint with NHSTA of what ever their name is.
In any case I suggest you should have a FROG breaking system. We use a Brake Buddy with the dead man break away and the alert system. It works so I have never tried any ofther ssystem
Good Luck