6.6 adapter plate removal

[TravisWiley]

I have a 2005 6.6 Silverado HD what an Allison Transmission anybody know how to remove the adapter plate

[More Power]

The coolant passes from one side to the other, through the adapter plate. The oil filter adapter/cooler and starter also attach to it... So, other than dealing with those systems, it's just a matter of bolts... You'd have to remove the transmission and flex-plate to get to all of the bolts behind the flexplate.

https://www.thedieselpageforums.com/tdpforum/attachment.php?attachmentid=4475&stc=1&d=1572279526

Jim