Radio no sound - 2001 Chevrolet Silverado 2500HD

The bcm controls that device for the addition of features like blue tooth and hands free, on-star etc.

IF the speakers are in the doors then the wiring harness in the door-jam is frayed, and you must cut the rubber to access the wires between the door and the door jam to get at the wires without taking the door apart.

sounds like a short in a wire. check all wires to and frm radio

Either radio is bad, or you have a loose connection to speakers, or poor ground connection at the radio. If a poor ground connection, the radio will intermittently not work also. Since radio continues to work, but sound does not, it is probably a bad audio circuit in the radio itself.

If the radio powers on, the fuse is OK. You probably have a bad output section in the radio.

sounds like a bad radio install or radio is bad

the ic on the radio has gone,that cut the sound, must change or simply test another radio

I had the same problem with my 04 Suburban, sound and then no sound from anything (radio, on star, door chime, etc). The dealership thought it was the radio, so they put a new radio in. A day later the same problem. It turned out to be the amplifier under the center console. Everything is working with no problem for over a year.