quick question:
If you are going to use a new EFILive tune or custom OS... wouldn't it be easier to reinstall new software over the locked program? Or, am I misunderstanding and it is the PCM's access that is locked?
On the few "locked mail order tunned" PCM's that I have redone I have had no problem with reinstalling a current version of GM software and starting over with 'clean' un-piddled with software.