I've seen several OBD scanner modules that plug in under the dash and then into your computer. I'm trying to determine if there is a good way to fix my speedo after I get the gears changed without going to a dealership and dealing with all the nonsense normally encountered there.


I have a VAGCOM from Ross Tech for my VW's and can change about anything but the color of the car with it. Is there something like this for these trucks? I need something to read codes if I ever get one and something I can fix the speedo with. I found a speedo correction thing from Hypertech that looks promising. Any other ideas?