Circuit/System Description
WARNING: This page is about a different car, the 2017 GMC Sierra 1500 and 2017 Chevrolet Silverado 1500. However, it is still accessible from the selected car via links, so may be relevant.
The starter/generator control module, often referred to as the generator control module, is comprised of the following three control modules; the hybrid/EV powertrain control module 1, 14 volt power module and the drive motor control module. These three control modules are non-serviceable parts of the starter/generator control module. This is an internal fault detection of the starter/generator control module and no external circuits are involved.