iPhone only plays music out of one speaker

Calling on my phone works perfectly in my 2025 Chevy Silverado, I can hear them through all speakers. As soon as I put my music on though…it only plays out of one speaker! I have updated my phone, restarted it, made sure everything was how it should, I checked my truck as well. I did a reset on the truck, disconnected and forgot this device etc. It’s my PHONE! My husband connected his phone to my truck and it worked perfectly. Please I have tried everything