2021 3500 crash sensor issues
 

I have a 2021 Chevy 3500 diesel crew cab long box. when I hook up an enclosed trailer the crash sensors in the mirrors telling you someone is in that lane flash CONSTANTLY on and off. It’s the only time it malfunctions. I took it to two dealerships. One said Chevy knows there is a problem with it and doesn’t have a fix, the other said it was normal operating and I have to manually shut off the sensors in the settings when towing, which we all know is complete rubbish. Is there anyone else out there that does or does not have this issue with a 2021?
it’s super annoying. Thanks,