hello everyone and my problem is that my truck wont start, when i turn the key everything turns on, i can also hear the fuel pump working so its not that
but as soon as it cranks it turns on and right after it goes off like its not getting enough 'something' and it dies, there is no 'check engine' light or anything please help

 

If the truck runs for maybe 3-10 seconds or so, then it sounds like you need a reprogram. That's ofcourse considering you are using the correct key and it's been programed. if your trying this with a fresh cut key, then you need to program it or else the computer gets put into lock-out mode and shuts the truck off.