[CIWS]

I do not know if it's available for the 08 CTS yet (I would have to call) but I was at a local Earmark car audio getting radar detector hardwired last night and while waiting inquired about the possibility of having a backup camera installed without adding an extra display screen in the car. (this is on an STS-V with touch screen Nav). The manager told me they sell a module that can be installed in my model of car (he looked it up) that will bypass the car's lockout of the video and other Nav, bluetooth functions and allow them to operate while the car is in drive and in motion so that I could patch a backup camera to the existing touch screen Nav display as well as watch video and access the other functions of the Nav and bluetooth. I can also have the module installed seperately if I only wish to unlock all those features while in motion without getting the camera. I would suspect if it's not available yet, it will be if they make it for the touch screen Radio/Nav unit used in the STS and Escalade. Like someone else suggested you might check your local aftermarket stores that specialize in Navigation, Stereo, and Video systems and ask.