2012 Cadillac SRX touchy radio

I live in San Diego, bought a SRX cadillac 2012 and after a few days I lost all radio station FM and AM.
AUX works fine and CD work fine
What is funny is that driving next to San Diego, Chulla Vista all stations work fine]e.
Back in San Diego nothing

Sounds like an antenna problem, unplugged, broken wire, missing antenna, or antenna base not grounded.

Check the antenna connection to the radio. I used to have an add-on Sirius radio that required tapping into the radio via the antenna. When I sold the car, I had to restore it back and the antenna was a bear to reach. I only halfheartedly tried to reinsert it due to the difficulty. Perhaps your car suffered something similar…