I took a look at the schematics for the two fuse boxes in my 2023 Chevrolet and _could not tell which/if any_ fuse was dedicated to a cellular modem.

This was in regards to: https://www.ftc.gov/news-events/news/press-releases/2025/01/...

Same here. I am driving a 25 Kia and have tried to little success to find that modem.