Unlock code for 2002 Vauxhall Corsa

[DerekTilley12]

Hello all,
I want to put the orginal radio back in my Vauxhall Corsa but it is second hand and I can't find the unlock code anywhere in the documents I got with the car.
The radio reference number is: GM020621326871
Could anyone please help me with the code to unlock it.
Thanks,
Derek

[Mariusik]

Hello all,
I want to put the orginal radio back in my Vauxhall Corsa but it is second hand and I can't find the unlock code anywhere in the documents I got with the car.
The radio reference number is: GM020621326871
Could anyone please help me with the code to unlock it.
Thanks,
Derek

Sorry,not posibile from serial number.