Delco radio code model 30015807 serial num 3017531

http://www.mobileinformationlabs.com/delco-stereo-wiring-diagrams.htm

http://www.autos.com/aftermarket-parts/understanding-the-wiring-color-codes-for-delco-car-radio-units-and-accessories


wiring harness color code Delco 30015807

i guess this is one of the first locking radios ever at gm

https://www.youtube.com/watch?v=u2osiPwVNm8


http://chevroletforum.com/forum/tahoe-suburban-25/%22l-o-c-%22-stereo-screen-menu-17934/


try googling this, see what others did,

only GM can unlock this rad, call them.

there may be hacking sites that can but i dont use or trust them.

go on the net type in free radio codes when you selected a site, go to forums or questions type in
your make and the serial number of your and ask for the code, someone will answer you, it took me 10mins to get the code i needed

Go to www.crutchfield.com in Charlottesville, Virginia and they specialize in replacement of original equipment and Adapter kits with instruction manuals to do so.

~Stillin~

Hello uncletimothy, my name is JShreader. Thank you for choosing fixya.com.

I uploaded the Wiring Diagram you requested for the Radio Circuit in .pdf format. You can download it by clicking HERE. I hope this helps you. If you have any more questions or need any more diagrams, please don't hesitate to ask...Thanks again, JShreader!

http://www.radio-code.com/

u can call any close delar to ur place and they will help u by phone they will give u the code for ur radio and they will tell u they way to enter it in its free from anydelar

we found the flasher curcuit had no power to the hot prong. So my friend wired the flashers hot prong into the radios fuse curcuit to get power to it and put a separate 10amp fuse on the new lead.

It's either under the dash by your left knee or down on the drivers side kickpanel.

if the people who hooked the radio up did it right you should have an in line fuse on each wire in the back of the radio check and change the burnt out fuse if not the radio is no good