lucasbagby

Hello, I recently purchased a 2020 Silverado 3500 Duramax. I removed the factory bed and installed a flatbed. Since then it's says on the screen every time it is started to Service Side Detection System. I have contacted multiple dealerships only to have them tell me that they can't do anything to reprogram it. Has anyone had any experience with this and / or is there a wiring schematic available for me to look at? Thanks in advance.