So I picked up a 08 Denali and it needs a trans. Can I do a read entire and then do a write entire to force the original OS and VIN to the new trans since the TCM is bolted to the valve body? Or is this something that has to be done with a TechII? I have read that HPT 3.X you cant but an older version it was possible to change VIN? My other option would be to swap the TCM from the original trans to the new one and it should work as well? This is the first one of these I have messed with. Thanks in advance.
Nick