2025 Yukon -- No Sound and No Supercruise

[nybruin]

I have a '25 Yukon AT4 Ultimate.
A few days ago the sound stopped working -- no radio, no turn signal, no nothing. I figured it was the amplifier and made a dealer appt for next week.
However I noticed that supercruise is no longer engaging too. Maybe there is a bigger underlying issue.

Anyone else have similar issue in the past?

 

[nybruin]

Solved: I disconnected the battery. Sound and Super Cruise are back.