Delco CDR 500 Unlock Code

[ball1748]

Ser No GM 90 493 281

4 660 103

>PA6-GF15<

If anyone please help with the code for this radio it would be greatly appreciated. I am a mechanic and can answer general questions but it is only advice and the manufacturer should always be approached where necessary.

[ianess]

So sorry...I haven't a clue about radio codes but I too have a Delco CDR500 fitted in my Astra.  Trouble is, I have no user manual and haven't the slightest idea how to set it up.   Any advice would be much appreciated.
Hope you get better answers than this one....best wishes.