Thanks, I'll report back if and when I get to test. I'm currently fighting with an untested diy-ltcc prototype, so I may be several days before I'm ready to tweak on the bin.
edit: I meant to add some possibly anecdotal information I noticed the other night trying to flash a few changes w/ eehack. Mind you this is on a y-body where the CCM is the aldl master. After having the ECM disconnected, I was unable to get it into programming mode - the exact error escapes me at the moment but it was something related to the key seed - eehack suggests trying key off and trying again. The only way I could get into programming mode was to try starting the engine. After that it flashed on the first attempt. Same thing happened when I pulled the red connector to check some pinouts were correct.
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