Circuit/System Description
WARNING: This page is about a different car, the 2013 GMC Acadia, 2013 Chevrolet Traverse, and 2013 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
The electronic brake control module (EBCM) controls the variable effort steering (VES) actuator on the steering gear. The EBCM controls the actuator using 0 to 1.0 Amp. At 0 mph the EBCM supplies 1.0 Amp to the actuator. As the vehicle speed increases the amperage to the actuator decreases.