Hi Lyndon, you will have to remove the radio and find the serial number should look something like GM1234X1234567 when you find this re-post your question with the serial number and you should get your code, as your radio is showing safe at the moment you will have to leave it switched on for a couple of hours without touching any buttons, after this you will be able to enter your code if your not sure how to enter have a look at www.davidsonelectronics.co.uk/code_entry.htm this will show you how to enter your code.
nigel, May 2008
