TPS Reset tool

Live in Alaska and swap tires around twice a year (Studded to summer and vis-a-versa). I have each mounted on their own rims. When I change the tires over the vehicle will get a tire light, I bring it down to the dealer and they use a scanner/tool to rest the system (calibrate new TPS to computer). Does anyone know where to pick up this reset tool and roughly how much it runs? Trying to figure out if it is cheaper to just bring by the dealer twice a year or is it worth investing into. Thx

What kind of vehicle do you have?

08 Chevy Tahoe