12V battery fault error twice in two weeks?!?!

[tmccraw]

I bought my wife a 2025 Hummer EV 3X back in May of this year. The car has been flawless and she has been ecstatic since the purchase. Two weeks ago luckily while at home the car through this error. You can’t open the doors because the windows won’t come down, you can’t open any of the trunks, and the car is completely dead. I had to have it towed to the closest GMC dealership. After a week, they returned it and replaced a 12 V battery… Keep in mind which is basically brand new. She had the vehicle home for one week and the same code happened again. It was towed yet again to the dealership And they have currently had the vehicle for two weeks. How common is this issue?

 

[Helipilot]

Sounds like you have a module that is not shutting down when vehicle is off. The dealership will eventually find and replace it.