I hate the electronic auto climate control. It thinks it knows better than you. I set the thing on recirculate which blows out the coldest and highest volume of air. I get out of my car to get gas, get back in, crank up and the damn thing is reset back to fresh air. When I set my settings, I want them where I put them. I don't like GM thinking they know more about how I like my controls set than I do. I also hate that the Auto AC fan is agonizingly slow. With the manual dial it is instant AC, with the Auto it is wait 20 or 30 seconds and I will get up to speed.
I like the dual climate control, but hate the electronic B.S.
FWIW, I had a Nissan Pathfinder and it worked the same sucky way.