I ran an onstar diagnostic and was emailed my report. It told traction control issue. It says all other tests are 100%. My dash brake and traction control warning lights come on after a minute of starting the car. The dash messages service stabilitrack, service traction control, brake system. There is no difference in the ride. Car runs great. I ran a scan myself and says no codes. Any ideas what to look for ?

Thanks
RJ

2008 Buick Lucerne CXL
148000 miles