I made the swap from a single disk factory headunit to a six disk bose unit as well. The other posters are correct, you need someone with a tech2 to program your vin into the headunit. Before you do though, if you haven't already, pull the fuse from the radio for a second and then turn the key to acc. The radio should be unlocked and you should run though all the functions on the radio to make sure it is working properly before you spend the money to get it reprogramed. As soon as you turn the key to run the radio will communicate with the vehicles computer and lock, but you can just pull the fuse again if you want to retest it. $75 is pretty steep for all that is involved, I would make a couple of calls and see if you can find a better deal. It only takes a few minutes, I only paid about half of that.
