I can't figure out how to make my truck crank with the key. I tried checking fuses and starter relay and everything seems fine. I can jump my starter with a screw driver and it spins right away. I'm trying to figure where relay 36 is located on my truck but can't seem to find it anywhere. Also my truck won't start, not sure if I have air in the diesel lines. My guy that drives it told me he saw the low fuel light on but went away and it shut off on him. He tried cranking it and nothing until it wouldn't crank with the key. I put a bit of starting fluid to see if it will turn on and it does but won't stay on. Not sure if the ecu went bad or what it could be. I appreciate any help to get my truck running again. I have another same truck and model if I have to switch parts to try it out to see if it will help. Been tempting to switch the ecu to see if that will crank it
