RodneyD

I am having a very similar problem. I have a 2020 Silverado 1500 LTZ with side detection system. It quit working about 2 months ago during a period of heavy and frequent rains giving the message Side Detection System Temporarily unavailable. I live on the farm and drive through caliche driveway every day. Before I hit the 36,000 mile mark, I took it to the dealer to get the system checked out / fixed. They looked at it and gave me a bulletin that says the sensors need to be cleaned, but the system was not made to function by the dealer and has never worked since. a week ago, I took the corner sensors off behind the bumper and washed it all out with a garden hose. This did not fix the problem. I am frustrated. I paid good money for the higher end package on this truck and I deserve to have it work. I have owned two cars (Other manufacturers) with blind spot monitors which never failed over >100,000 miles each so I know the technology works, just not on my Chevy!