Our Elk radio/cd player died after about a year. Went to Amazon and they wanted too much to replace it, and the reviews were almost 100% negative.
So ripped it out, modified the hole slightly, made a wooden box and put in a much cheaper, Sony, regular car radio. It sticks out a bit but but has a usb port for our music, and serves as a little shelf for keys and junk.
Hmmm, but to your original question, don't think we ever tried AM on either one! But FM works!