I find this Humorous. So many tell of things that Never were.
Thanks for setting this straight. It's no surprise that people outside of GM have to work with the info we're given. If GM sales says there's a 5.3 / 4L80E available then it takes a long time to prove otherwise, if it ever happens. Strange and untrue things happen within the General's ranks as you know. I have a GM STG manual showing 700R4 transmission with dual pattern Chev + BOP case. Engineer from assembly line was surprised said "No way." He did plenty of digging, even found multiple versions of training manuals. Seems that's the only picture around of that mythical beast. Even the trainer who gave the class said they came in dual flavors. But without backing from inside, what else has a guy got?