CT5-V OTA Update 654.10 installed yesterday and 2 power cycles I no longer have any connectivity

[Smorgas_Morg]

2025 10A Blackwing no longer has any connectivity after yesterday's OTA update was installed. Drove fine with no connectivity issues that afternoon/evening, now this morning when I cranked it up I have no Google assistant, Spotify, Maps data, etc. Powercycled the car and infotainment system twice (each) and nothing changed. Was able to connect to OnStar and they confirmed no issues visible on their side and all subscriptions showing active.

Has anybody else experienced this issue? Cadillac Lyriq forums point towards the Telematics module being fried and backordered, which has adjusted the pucker factor upwards.

I just had to disconnect the battery to get the driver assist system working again a couple weeks ago, now I have another electrical gremlin to deal with? This is getting kind of old...

 

[CB34]

Not much choice here but to take it back to the dealer - you have a warranty.

One of the reasons why I defer these updates until I can have the dealer run them manually. I just don't trust GM's ability to administer OTA updates as they've failed every time I've tried in this car.

 

[FLYARMY]

Uh -0h, Rorge ! I need to go out and check my BW.

 

[Argent86]

Thankfully, no update available yesterday on '24 CT5-V Blackwing.

I think I updated it, maybe, once, since July. The darn USB audio stick fires up playing every.single.time - cannot stop the thing from playing if its plugged in. Total B.S. Though. I think I read there's a new GM head of technology/ OnStar UI improvemnt or something.

I wish I could remove the Sirius antenna or change it to one with camera. I do have SVR though. Maybe just delete the ugly Sirius fin. They are offering $48/year. Eh, maybe I'll get that for the road trips. Too bad Summer only tires. Until I buy wheels and triple snow peak tires it's kinda just parked. ugh.