WiFi Hotspot, No Connection to Internet

I'm having the same issue. I cannot toggle my share wifi hotspot to on. It's off and it won't let me change it. Now other items are starting to not work. My onstar buttons do not light up, my clock is not keeping the correct time, the light that told me the speed limit of the road I was on no longer does. Dealership wants to keep it for two weeks just to diagnose it but from everything I read they just end up saying it's an onstar issue. Onstar is just as useless. I have no faith in either gmc or onstar service. This is a 2022 silverado and I should not have these problems.  It's bad enough that I had to figure out how to fix my trailer brake/lights issue because it wouldn't recognize my airstream.  My other truck had no problem with my airstream but this one won't work without an added resistor. Something GMC could not figure out but this woman who doesn't know much about all the wiring was able to do enough google research to find the answer. I am not impressed with the customer service. Also who has an extra vehicle laying around that they can leave theirs at the shop for two weeks. Seriously what world are they living in?