Since no one else jumped in, I'll take a shot at it...
Autoride is not about height or leveling, it checks the road surface every 20-milliseconds and "varies the amount of shock damping".
Basically adjusts the shocks as you go for the smoothest ride.
GM's auto-level had measured the back end height and adjusted the shocks with a built in air compressor when you put a heavy load or a trailer on the back end.
My old 2002 Tahoe had both from GM.
If you're looking at an aftermarket air shock kit, this is were I get foggy on you.
To keep the autoride you would need shocks that take the autoride computer input, as well as accept the compressor.
Do you know what you have for rear suspension now? The codes in the glove box should help out for this. And I'm surprised that an Denali with autoride doesn't have autolevel, but I'm not that familiar with them.
I loved the autolevel on my last Tahoe because it always had a trailer on it. I was worried about losing the leveling feature on my 2014 SSV, but the ZW7 - PREMIUM RIDE SUSPENSION (from the glovebox codes
has Nivomat shocks which basically have valving to level themselves out when there is a heavy load. So far it seems like it works.
Why do you need the leveling kit in your ride?