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.
Ignition voltage and ground are supplied to the rearview camera. The rearview camera sends video information to the Inside Rearview Mirror through a video signal + and a video signal - circuit. A grounded shielding also wraps the video signal circuits to reduce electronic interference which may degrade the video signal and cause a distorted or otherwise degraded image. When reverse gear is selected, the Inside Rearview Mirror displays the video image.