Circuit/System Description
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
The K9 Body Control Module provides the S33 Steering Wheel Horn Contact with signal circuit 3287. Ground is applied at all times to the S33 Steering Wheel Horn Contact. When the switch is pressed, ground is applied to the K9 Body Control Module through signal circuit 3287.