The tune on my Eco is from Green Diesel Engineering and if an update is needed it costs me $50 or if the ECM were to take a dump it is still $50 if I provide the ECM or $650 if they provide the ECM.
Not sure how you got charged $5000+ for an ECM at the dealership though! I think I would call around to some other dealers and find out what they charge and go back and ask them why they over charged you. You can buy a brand new programmed ECM for
$1400 all day long and a used one for $250. What else did they do to the truck to rack up a $5K+ bill?
Don