Circuit/System Description
WARNING: This page is about a different car, the 2008 GMC Yukon XL and 2008 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
The electronic brake control module (EBCM) detects inputs from the brake pressure sensor, vehicle speed, and a serial data message from the body control module (BCM) that the brake pedal is applied. When the vehicle is stopping the EBCM monitors for the brake pedal is pressed, with the brake pressure increasing and the vehicle is slowing down, or when the vehicle is accelerating, the brake pedal is not pressed and brake pressure is not increasing.