S2 Transmission Manual Shift Switch
WARNING: This page is about a different car, the 2024 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
The S2 Transmission Manual Shift Switch contains 2 switches connected to a resistor network and is an integral part of the transmission control lever knob. Pressing the plus (+) or minus (-) button signals a shift request by generating a specific resistance.