Hallo radio code opel astra vdo siemens gm050021461711
Unfortunately the code for a Vauxhall VDO/SIEMENS radio is only available from the Main Vauxhall Dealer or a Radio Decoding Service only.and will not be available for free (or cheap) from anywhere on the Internet
This is because access is required to the original factory database....and this is not commercially available.
Sorry.............
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