Hoping someone still checks this thread. I have a 2021 2500HD High Country and a 2020 40’ Montana 5th wheel. Last spring bought the GM camera after wireless issues with Furrion camera. Mounted the camera high and ran the cable down the ladder and underneath through pvc conduit. Fished it through to the hitch near the 7 pin cable. Want to move the camera jack from the bumper to the bed but haven’t yet because of the problem. Everything works great until it doesn’t. After several months, when towing for 3-4 hours video display goes haywire then black. After resting for a while will start and work fine for 3-4 hours again. Have had it to the dealer 3 times. 1st time did some type of reprogramming - no change. 2nd time replaced video processing module - no change. 3rd time they tried to recreate and couldn’t. Now they want my trailer with my truck. Anyone with any new info?