what you have to do is when you do surveyor you have to search " diesel refueling station" add that, then place you sd70 there. (place you consist behind it to hook up just extend your track) then in driver it will fill up. When its done filling up go to cab mode, hit the [ button move the start switch all the way to the right, and hold the start switch down, when it starts move the switch to the middle
Hopes this help!!