I know on the new chevy's, they are giving you trailer camera's on some packages and they are an optional accessory you can buy if you have some of the non top tier camera packages but still have the upgraded 8" infotainment package. There are plug ins right by the 7 pin and 4 pin trailer plugs on the bumper for two cameras on my LTZ. I believe it's a $300+ accessory for the camera and wiring kit for your trailer. Might be worth looking into if it's compatible with your year truck.
2020 Chevrolet 2500 LTZ, 2019 Forest River Wolfpack 23Pack15, 2014 EZGO Golf Cart.