Im looking at a 99 psd to buy but the truck looks a little rougher than the odometer says. Im wondering if the guy turned the #'s back some how, then I thought maybe the computer would have accurate vehicle info on it. If I took it to a dealership and had them scan could they tell me stuff like that? Possibly if it also had a programer on it or anything else? Does anyone know about what the computer can tell me about the truck?

Thanks Tom