just recently I had to get my code from the dealership I got my car from. I got my car used so they didn't have the code. At first they wanted to charge me $80. I laughed, and one of the service guys pulled me aside and told me how to remove the stock unit and said to call in with the seral number for the unit. But then they were really cool and did it for free. Will enough persuasion you should be able to get the code one way or another.