I have a 2022 Refreshed Sierra Denali. I received a complimentary 3GB data plan with the truck. Without using Spotify, Pandora, Google Maps, etc., I burned through the 3GB in 1 week and 1500 km. I called OnStar and they gave me another 3GB as goodwill. I have burned through 2.6GB of that over the course of a couple of weeks.
My WiFi hotspot is turned off so no phone can connect to my truck.
I have never used any of the built in apps directly. Google Maps is on but I have never searched a destination or used the route function.
I have spent over an hour, 5 different times with the OnStar people-they don't have a clue.
Yesterday, the OnStar rep told be that July 18th, shortly after midnight, my truck used a significant amount of data. Strange thing is I was at my friend's cottage with another vehicle and my truck was sitting in my driveway, at home, obviously off.
I can't get any answers from GM so asking for help here.
Scott.