_GM (UVC) - Rear Vision Camera

Description and Operation

The rear vision camera system consists of the rear-view camera and the infotainment system.

When the transmission is placed into Reverse, 12 volts is applied to the reverse lamp control circuit by the body control module (BCM). The rear-view camera monitors this circuit and when 12 volts is seen, indicating that the transmission is in Reverse, the rear-view camera will activate.  The rear-view camera receives ignition voltage and a constant ground to power the camera.  Video signal [+] and video signal [–] circuits carry the video image from the rear-view camera to the infotainment system.  Additionally, the video signal circuits are shielded to prevent any interference which may lead to a loss of video signal resolution and cause a degraded video image.  The shield is grounded by the rear-view camera.

The following conditions may cause a degraded rear vision camera image:

• Ice, snow, or mud has built up on the rear vision camera
• Dark conditions
• Extreme light conditions, such as glare from the sun or the headlights of another vehicle
• Damage to the rear of the vehicle
• Extreme high temperatures or extreme temperature changes

Schematic

~

Information Bulletins

• http://www.gmupfitter.com/files/media/photo/1196/UI%20Bulletin_151_GMT610%20RVC.pdf
• https://www.gmupfitter.com/files/media/photo/1193/Rearview%20Camera%20Installation%20Instruction_151.pdf