New to the forum and it's been a long time since I've had a GMC. I have tried to search for a solution and have seen one post about this quite a few years back. Is there a setting or fix to prevent the radio/XM from turning on automatically EVERY time the vehicle starts back up? I was able to change some settings on my phone/android to prevent it to auto play every time it turns on. Now...XM turns on every time it starts up. Software seems to be up to date. Thanks for the help.