[dochummer]

So I spoke with the local gm service and asked them if they could do the upgrades to the firmware. They said that they were equipped to do it, but I would have to let them know what the problems are that I'm experiencing. He said that they wouldn't just throw in the updates without verifying some type of problem. He said that they have to enter info into their computer, and it would spit out the solution.. So....all I want is to see if my mpg's will increase with the upgrades. What should I say to the guy?