I have a 2020 Silverado Z71 2500HD Diesel with 23K I have a similar issue with the internet connection. When I remote start the truck the internet is not active. Shut it off open the door wait a minute then start normally the internet works fine. This just started happening a few months ago. There have been no updates to the system that I am aware of. Just asking to see if anyone else noticed this problem. I plan on asking the dealer with my next service.