Not sure if this is what she may be seeing but I've notice that often when a software update is available (and you are promoted to apply via the console) if you don't apply it immediately, when you shut off the Blazer and lock it and leave, the radio will keep playing for 2-3 mins. I find this irritating as I keep thinking I didn't shut the vechicle off. Once the software updated is downloaded and applied this behavior goes away.Hi folks, my daughter has a 2020 blazer, when she shuts off her car and opens the door the radio doesn't shut off. It usually acts up after a car was with an under carriage wash. Been to the dealer numerous times without any help yet. Has anyone had this issue with their Blazer.