I just picked up a ECM at a parts store. I was told that it needs to be flashed. So I got a ride down to the dealership and now they are telling me that they need my whole truck there in order to flash it. Ugh! Is this true, or are they just trying to weasel more money out of me by having me drag my truck all the way there to jack up the labor? I was under the impression that all they needed to do was to hook this ECM up to a computer and upload the information on it.