I know I am ressurecting a thread that is a few years old but from what I can see it was never answered. All I see is a bunch of responses telling the original poster to not use the service that is available on the truck.
I am running in to the same issue. The apps fail to install. I have a 2018 Sierra.
Please respond if anyone has any ideas on why this is occurring. The things I don't really care to hear is "Don't use the apps, just plug in your Android, or Apple device"... that's not an answer and it doesn't resolve a potential issue with the truck.