I went at a friends house and when i tried to start up my truck all of a sudden the truck didnt start, well it starts but doesnt run. It just starts and then runs for 1 second and then dies. I never has been doing it before. I tried to reprogramm my ecm and nothing. Then i did write the stock tune on it again with hp tuners and nothing. But i dont think its the tune as i have ran this current tune for 2 weeks or so already and i ran great. Has anybody any idea what this might be?