Brake System Control Module
WARNING: This page is about a different car, the 2020 Chevrolet Silverado 1500. However, it is still accessible from the selected car via links, so may be relevant.
The K160 Brake System Control Module (BSCM) is a serviceable GMLAN module. The brake system control module sends the low power commanded duty cycle signal to the trailer brake power control module. The trailer brake power control module amplifies the signal and provides an output that is required to drive the trailer brakes.