Circuit/System Description
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 transmission shift lever position indicator is located on the center console and indicates the current transmission shift level position. The transmission shift lever position indicator receives power and ground and is controlled by the body control module (BCM) via serial data.