Circuit/System Description
WARNING: This page is about a different car, the 2019 Chevrolet Traverse. However, it is still accessible from the selected car via links, so may be relevant.
The B110 Battery Sensor Module monitors battery module and performs internal diagnostics. The Battery Sensor Module also communicates to the K20 Engine Control Module (ECM), and the ECM sets faults for any errors in the reported alive rolling counts.