HELP!!!!!

I've got a problem with my 2002 STS that I have not seen before.
When I start the engine everything looks fine. Then when I shift it in "reverse" or in "drive", the message "service stability system" shows up in the dash.
In addition the ABS light and the TC light turn on and stay on also after I quit the message in the dash.

Has anyone seen this or does anybody know what could cause this?????

Thanks,


Ron

Well, I finally ended up with paying over $500 to get it fixed.
One of the wheel speed sensors had gone bad and I didn't have the tools to repair it myself.