Circuit/System Description
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. 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 electronic brake control module (EBCM) to disable traction control, and the instrument panel cluster (IPC) to illuminate the indicator.