Circuit/System Description
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The rear view camera image display module receives a 12-volt signal from the body control module (BCM) indicating that the vehicle is in reverse gear. When this signal is detected the rear view camera image display module will provide a regulated 6-volt power source to the rear view camera. The rear view image will then be displayed on the radio.
If a proper video signal is not detected, the radio will display a SERVICE REQUIRED notification on the radio display.