Wi-fi hotspot /OnStar /GPS Not working

[alanw]

I recently had this happen on my 2022 Yukon SLT. It may be coincidence, but I think it happened to us shortly after a bad update. I parked it in the garage and let the update do it's thing. I intended on checking it's progress, but got side track and forgot about it until the morning. The battery was completely dead. I jumped it and everything has been fine... except now we're noticing the wifi is out and the onstar button doesn't work. (no green or red light.. nothing)

I have a case with onstar, but they told me to bring it into the dealer. The dealer told me a bit of a story, which honestly it's likely TMI for me, but it was also fairly vague. They said they've seen this before. The code they pulled references a small easy to replace part, but from their experience it's never a complete fix and the whole "telematic control module" needs to be replaced.

I have no idea what a telematic control module is, but it's apparently on back order and we have a 10 hr trip planned with small children. I'm hoping this is an actual fix, as we've heard some horror stories about our local dealership.

 

[ctamara001]

Confirmed at dealer yesterday the On Star module is bad…. On order but constrained so could be few weeks or months. Anyone else experience this? Any guess on part timeline?

 

[ctamara001]

My WiFi on 2020 Yukon Denali has been intermittently working, more not working than actually working, since March. Called Onstar 20 plus times and spent tens of hours troubleshooting. They finally told me I need to take to the dealership. Dealership confirmed Onstar module was bad. Took a month to come in. And it is still doing the same. Did the new module fix all of your issues? Or was there something else sometime can recommend?