Circuit/System Description
WARNING: This page is about a different car, the 2011 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
The body control module controls the transmission shift lock control solenoid actuator by providing a battery positive voltage to the solenoid. The body control module controls the voltage supply circuit to the transmission shift lock control solenoid actuator. The BCM monitors the voltage and current flow of the control circuit.