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Hey guys I have an issue with our main problem child again.  Truck is a 12’ granite mp7.   A bit of history, we got the truck with a burned ecm when we bought it, we replaced the ecm with a used one and it ran for a while, we started having issues with emissions components so we had it deleted about 3 months ago. Then truck ran great for 2 months then the ecm failed again this time it still started but only ran on three cylinders.  We replaced the ecm yet again with a used one and had it deleted again and the truck ran great for 2 weeks.  Today, we started the truck in the morning and it ran for 10 seconds then shut off, now if you try to start it only the dash lights up like usual but the engine doesn’t crank or start.  I did the preliminary things like checking fuses and battery connections (new batteries three days ago), but nothing seems out of order.  I’m having someone bring me my laptop later today to hook up and see what’s going on, but I’m already suspecting bad ecm again.  Do you guys have any insight? What can be causing this truck to repeatedly burn ecm’s?  Any tips on dealing with the no start no crank if it isn’t the ecm? It did start initially for 10 seconds before going dead.  

Well guys I got it hooked up and it’s not looking good.   No hours on the hour meter and it has communication codes.   This is classic of yet another burned ecm.   Does anyone know why this truck keeps burning out ECM’s? 
 

ill do some more diagnostic on it later today when I have time just to rule out other variables, but im pretty certain its got a bad module.  

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