I too am at my wits end. Ordered a camera, 84580657, from a GM parts warehouse, that initially was erratic. Sometimes connected, sometimes connected with no camera option in the camera app, sometimes not recognized at all. Eventually got ANOTHER camera from the dealership (who know absolutely nothing about this option). New camera was 85004154. It shows connected, but no video, and not option in the camera app (camera is greyed out). I've checked plugs, and they are connected, and I've tried every combination of plugin procedure known to man. I'm of the understanding that for the basic trailer camera package without invisible trailer, all you have to do is connect the trailer via 7-way and plug the camera in(?). I did this to test camera, and no matter what I did I couldn't get it to work. I don't want them any where near my RV in light of their ignorance of the system. I too would appreciate ANY guidance to make this feature work, since the dealership charged me $250 for the option on the window sticker. Thanks.