JimmyStepside

Joe, did you ever solve this and get your trailer camera to work? I have the same situation as you originally described with a 2019 Sierra SLT factory equipped with the Trailer Camera Package and the same PN camera purchased OTC as a part. I will not mount it on my Airstream until I'm sure it works, but would love to have the feature, just like shown in all the commercials. I think I've tried everything mentioned to make the system work except pushing the wire in from the back of the receptacle. I also get the black box where the camera should be. Similar to your experience dealerships are no help as they are also in the dark. I've considered calling OnStar to see if they can help wondering if a software update is required. Any update would be greatly appreciated.

Just ended a chat with the owner center. Their solution: shop dealers service department until you find one that knows something. Good luck. My local dealer sent me to Google, therefore I'm a new member here. I have the camera, but as of yet not installed, and the correct receptacle on my 2019 GMC SLT. Installation on an Airstream will not be trivial. Since some of you seem to have gotten the camera to work, can you please tell me the conditions required to check the rear of trailer camera and its view? Camera plugged in and view selected obviously. Trailer plugged in and selected? Truck started and in drive? Etc. I'm not mounting the camera until I know it works and the view is good.