I was speaking with a fellow Acadia owner in regards to our gas mileage and they said they heard there was a way for the dealer to do something to the car to make it get better gas mileage. I'm assuming they meant the trans flash as that in theory should improve some things, but is there something else anyone has heard about this? Kinda seems unbelievable if true...why wouldn't they just do it from the start. I'm skeptical and don't see this as being the direct reason for the reflash, or whatever it is. More possible that it is an indirect result of correcting something else.