No and yes. You don't have to order the stock tune from GDE. You could find a used one (look up wrecked trucks) and take it to the dealer and have them flash it for you. Costs about $100-150 for dealer to flash. Tell the dealer your current ECM is dead and you need this one flashed so you can install it. If they balk find a new dealer. You could ask GDE about them doing it but they just take it to a dealer.So the real question on our minds how does this impact those of us with GDE tune. Do I need to order in a stock tuned ECU from GDE and go in for the reflash so I can get the $3000 and then put my tuned ECU back in?
Yes, you do have to have a stock ECM tune in your truck with all the hardware (DEF, DPF, EGR, SCR) intact when you go in for the 'update' which is likely just an ECM flash. If you don't have one of those items the dealers will refuse to complete the work (and paperwork) until you bring it back into spec. That is written directly into the documents.