im not sure how the relearn works on the aveo. but if its just a recognition sequence you might only need the relearn once per set.. depending on how many slots the tpms has for storage. (i would hope that gm puts more than 4 knowing a lot of people have a winter set of wheels, but they do stupid things like naming cars after hedgehogs.) But that is a best case scenario.

i didnt run tpms in my summer wheels because i couldn't find a dealer who was cheap to install/transfer them. And knew how to reprogram the system. It was around $100 per sensor for the dealership, then added $25 per tire for mounting and balancing, Then added cost of reprogramming... since the sensors were new. The regualr price they charge for mounting and balancing was $125. So i had already spent $400 on rims, and $300 on tires.. which means my wheels would have more than doubled in price for a light on the dash.