I've seen it done on the UK forums on a V70 T5, he said he swap the TCM from a geartronic too. But I dont think thats possible without programming/reload aswell?
Also the transmission part numbers and year should match from donor vehicle, like i don't think it would work with the base model NA S60 ... maybe.
Other have done the swap and it worked going into drive, but when switched over to manual there was a message about "manual shifting reduced" and it did not function.
Also there was "transmission service required" message after TCM swap. Which I believe you can clear from a bootleg DICE unit.
If all that doesn't work then,
I heard that the CEM can be an issue too, apparently there is some obscure company out there that can fix this for a generous fee.
The only tuning company that does it I know of is MTE, but its rather pricey at over $800.
Then this contradicts that.
I've sold my car about a year back... and nope... never got it to work even after some discussions with Marco from MTE and Jan from Wothrline.
But what I have found out is:-
1. A GT car and standard auto trans car is the same in terms of hardware EXCEPT the GT shifter. Everything else is the same.
2. So it would make sense that the only other difference is software.
3. I have tried swapping in a GT shifter and leaving all else untouched, and the car gives an error message and displays "Reduced transmission functionality" (or something along that line), and a CEL pops up. Restarted the car and the CEL and error message is gone. Car functions normally but as the GT shifter has only a D mode, I cannot manually downshift the car due to restricted shift travel. Also appears that the car knows it has a GT shifter attached but cannot fully use it.
4. Tried replacing the TCM with a TCM from a GT T5. Nothing really happens. Car functions normally but still w/o GT.
Accordinly to Marco, he was under the impression that GT and non GT cars are identical except the shifter. So he's not sure why it won't work. Jan thinks you the GT capability is only inherent in T5 cars and not available for 2.0T light pressure cars which I own. I have also read on some UK forum where someone was able to just swap the shifter and TCM in his T5 and it works after a CEL reset. So it does seem like it is possible.
I researched doing this for my S80 AWD