Looking at 4th gen Yukons

I had an 11 Denali and she was a beast. Loved that 6.2 but I had to run 93 in it or the engine would knock. Long story short I sold it and have been through a few cars since then. Currently in a 2014 4Runner and I’ve fully customized it, love it, runs like a dream. Issue is we’re due with our third babe and I fear it’s just not going to work. We travel and my oldest two play multiple sports. I love the body style of the 4th gen Yukons and my heart has always missed my 11. Husband says no 6.2 because he doesn’t want to pay for the gas. I’m fine with an slt as long as it’s fully loaded.

To the questions. I know these things have horrible reputations so I’d at least look for a 16+. Is there specific things I’d want to look for in their reports? Previous recalls? My goal is to stay in the $15k-$19k range which I’ve found plenty the issue is they are years 15, 16, and some 17. Help a stressed mom out!