Hey guys I'm working on getting a 4l80e in to my 04 ctsv. I know the tranny will fit in the car I'm just not sure if I can get the ecm to contorl it.

I have read that this ecm came in a few trucks like the trail blazers but with a different os. The ctsv has alo of stuff that the trucks don't
I know the ecm in this car has a funky os so Im not surd if there will be memory left in the ecm to contol it

Anyone have a idea?