that's been confirmed a long time ago. I helped out guy that is probably no longer on here but lived close by and did a nav radio upgrade on his 2014 2500, we connected to sps and did the unlock and then all he needed to add was a gps antenna and it worked like a charm.
when you are using the tech2 it doesn't "really" go by year, it mostly goes by the vin letters.
it does ask for the year but (I THINK) that's only because some features were added or removed over time.
I can go tell it mine is a different year and most of the functions will still work fine
When it is/was used for programming via the pc all you do is connect it and turn it on, the computer does the rest via the vin number that it reads from the vehicle
