Im having a radio problem with my gl 450 2007. I don't know if it's the radio i have to replace or the amplifier. Im wondering which one is most common to being replaced. My radio turns on but no music would play

 

Try to open the fuses box and check every single one with a continuity multimeter.
that way you’ll see if it’s a fuse or the actual radio/amplifier that is malfunctioning.. good luck

 

What else works, and doesn't work, on the radio? Try all the functions and see which ones work and which ones don't. Try all controls, i.e. center console, steering wheel, etc. When was the battery last replaced?