Where is the fuse for my lights on my 2005 Silverado radio control buttons

Check the fuse for the radio, The lights on the buttons are controlled by the light switch and is separate from radio power.

Any sign of life at all , eg , lights , radio , turning over?

Do you know what a automotive electrrical wiring diagram is ? How to use a DMM- digital multi-meter ? Pick one system an diagnose an you will probably fix all the syatems . Voltage drop testing . Voltage or ground side problem .
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Free wiring diagrams http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size. View wiring diagrams an test the circuits.

UNDER THE DASH BOARD OR UNDER THE HOOD ACCESORIES FUSE

sounds like it's a fuse issue even tho the radio works,, my vehicle has a radio fuse and a assessory fuse the controls the lighter and lights on the radio

I had the same problem. I had to check the fuses in the engine compartment, I then had to replace two 15 amp fuses, after I replaced the fuses the problem was gone.

If you have just one side marker light out, it's probably a burnt bulb, those side lights are wired in with the parking and head lights, so when either the parking lights or head lights are turned on, the side lights come on also.
As far as the radio, the small bulb in there for the other half is probably blown.

Look in the trunk area that is covered in fabric

the radio needs to be programmed at a gm or chevrolet dealer the vin numbers in the radio dont match the vin numbers located in the body control module.

you have to put the fuse in to make it hot