Service Traction System Message
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The drive information center displays the service traction system message when any one of many ABS-disabling DTCs is set. The EBCM sends a serial data message to the driver information center (DIC) requesting this display.