Circuit/System Description
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The driver may disable the Traction Control System (TCS) by pressing the traction control switch. The body control module (BCM) detects the signal circuit is grounded and sends a serial data message to the EBCM to disable traction control, and the IPC to illuminate the indicator.