2012 1500 Radio problems....

I just bought a 2012 Ram 1500 from Carmax.
It runs great, just 1 minor problem..... I can't catch any AM radio stations on the radio. FM works fine.

I can bring it to Carmax and get it checked out but it is kind of a long drive and I am hoping one of you fine folks can give me an idea so I don't have to.

Good luck. I've owned several rams over the years, the radios are crap. Display stopped working, clock won't keep time. Crap reception, etc. Hit a bump, radio turns off. If you got some type of warranty, use it. Regardless of the drive.