could possibly give me the ID number for the factory installed radio in a 2004 on 2004 Chevrolet Colorado

trying to set up internet radio in my 2004 Chevy Colorado but can not find the radios's ID number without having to remove radio and don't wish to do that.

Asked by for the 2004 Chevrolet Colorado
call the dealer with your vin and they should have it or remove radio and read on back side
thank you