Your vehicle’s hydraulic brake system is divided into two parts. If one part isn’t working, the other part can still work and stop you. For good braking, though, you need both parts working well.
If the warning light comes on, there is a brake problem. Have your brake system inspected right away.
When you receive the Service Traction Control message, their is a problem with the system. You can still drive, however, the system will no longer limit wheel spin. Adjust your driving accordingly.
You can use the Set/Reset button on the steering wheel to clear the messsages on the DIC, however, you cannot clear the codes within the system. Although you can clear the messages, they most likely will appear again until the issue is fixed.
I encourage consult with a certified technician for additional assistance.
Please keep us posted.
GM Customer Service