01 Yukon auto ride

Can anyone help out with a message "service auto ride". Short of taking it in, is there something I can do to diagnose problem. Disregard previous post. I put it in heated garage and disconnected bat for 3 hrs to see if computer would reset itself. No good. I'm supposed to take it in to the dealer to setup a trade in today or tomorrow, would be nice if message wasn't there. Thanks Jeff