Yes, fully functional.FULLY FUNCTIONAL Code2 keys...?
Most good indies have the "Examiner" now, which is the kit needed to do it.not true for dealer only.
I know a top notch indie around my parts that claims he can do the keys if you have the correct code cards etc needed to do it. We did sit and play with his software when I had the GTA, very expensive kit but looked up to the job.
Will be dealer only for the most part as it is unlikely many indies will have spent that kind of money on such setups.