What does stability system sts mean on a 1998 cadillac seville sts

Ok so it seems you are having window, door lock, radio and stability control issues. If so, you are going to need some hands on testing to get to the root cause. We won't be able to guess with any level of certainty without looking at the car. Too many variables. Here is a link to find a shop near you. https://repairpal.com/repair-shops Alex