ANSWERS: 1
  • You need to pull the unit out to get the code on it. It should be 14 digits and probably starts with GM0500. Once you have that, take a look at http://instant-radio-code.co.uk/delco-radio-codes-search.php?gclid=CLq8o4bh2ZMCFQVBMAodgUziZg I used to have the decoder for these, but since replacing our 500 with an aftermarket model, I got rid of it. Sorry 'bout that would have given you the code for free otherwise.

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