How would I know if I have a problem with my Stabilitrak? Message keeps comingon on 2006 Cadillac DTS

Service Stabilitrak message keeps coming on, but not every time I start up. Maybe 50% of the time.

Asked by for the 2006 Cadillac DTS
have the codes scanned and post so we can adv
1 more answer
I have same problem told it's a control modular code U0073