S2 Transmission Manual Shift Switch
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
The S2 Transmission Manual Shift Switch contains two Hall Effect switches connected to a resistor network and is an integral part of the S3 Transmission Shift Lever. The S2 Transmission Manual Shift Switch has a specific resistance when the Hall Effect Switches are open. A specific resistance is generated when a Hall Effect switch closes. The S2 Transmission Manual Shift Switch is wired in series between the signal circuit from the K9 Body Control Module and ground.