2023 Z71 rear end/air bags settle at red lights

[Z71-Driver]

Is it normal for a 2023 Z71 with air bags to have the rear end settle/deflate while sitting at a red light ? Only happens while in Drive. Been doing it since I got it, so I thought it was normal and now I realize it’s probably not. I have a service appointment, but it’s a few weeks out. If it’s not normal, what could cause it?

Also going in for an issue when trying to detach a trailered load, the airbags overinflate as you unscrew/release load as hitch comes up, bumper won’t stop coming up to insane height. Tried everything to get it to stop including “Suspension Service Mode”.