2012 fuel pump driver flashing?

so i change alot of fuel pump drivers on the gms an fords, ford ius basically unlocked so its plug and play for the most part. gm on the other hand requires the fscm to be flashed. local stealership charges me about $60 which isnt bad except i either have to tow vehicle there or if it runs swap the fscm out in the parking lot of the dealership. i haved accidentally licensed the fscm once bc i didnt know any better, but can i only license the fscm and flash the segment from factory tune onto the new fscm? id woould save me a few dollars and a tow bill to get vehicle to the dealer for a flash.