DIY AC Install Instructions?

[Eg.h2o]

I spent a bunch of time searching for you……Nada.

this is all I can come up with from one post:

There is just an option in the BCM under the IPC in the Tech2 menu to switch AC to yes or something like that. If the dealer had to get a new program from GM, it sounds like an ECM firmware update, not an AC activation.

good luck!