Circuit/System Description

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Cruise Control Description and Operation
The K9 sends a serial data message to the K20 indicating the S70 function that has been requested.