i have a 2002 duramax. i recently bought a edge evolution cs programmer and it will not program my truck. the guy before me had a bully dog on it and told me he set the truck back to stock. when i try programming my edge it comes up on the screen Vehicle response error: Invalid Key. Seed:df5d Key: b266. i have talked to edge products and they said download fusion on the device to see if they messed something up. still the same error. edge then told me to plug my device in to the my computer in the house and connect to fusion and they'll then look at my device tell me whats going on. they couldn't help me. they said have my computer flashed and so I took it to gm and they said the computer is already stock and didn't flash it. so I called edge back and they said bully dog vinlocks computers and that the dealer wouldn't detect it. I called gm back to have them flash my truck anyway and they said they cant flash my computer when its already stock it wont give them the option to. help me this programmer was 500$ and all its good for now is a monitor on the dash. I went to a local mechanic and he told me since his gm scanner works on my truck it is not vinlocked. the truck has after market remote start and I tried programming with that all unhooked. unplugged batteries an then tried again. my only option now is this and a guy a hr away from me that seems to be a good programmer. thanks to any help