One or more of the sensors the car uses to manage the stability control systems has failed. Since your ABS light isn't on it's most likely not one of these sensors.
Unfortunately GM Social Media only covers the US. GM really, really needs to expand this to every country they have dealerships.Thank you for your concern Kristen..
I'll be visiting the dealership next week and see what the problem is, i'll post here the result when i'm done.
Btw i'm in Egypt so i'm not really sure if you cover this area Thanks though