Hello,
My 04.5' does this thing somtimes. Say you start it and drive to wherever. you shut your truck off and 30 seconds later you have to move it for some unknown reason. When i go to crank the starter, it cranks probably 3 or 4 seconds more than normal to start. If it sets for 5 mins or longer than it starts fine. What do ya'll think? thanks
ez

 

A friend with a 03 had the same thing and had to replace the injectors. They said it was the injectors bleeding back. I don't know, was hoping somebody has an idea?
ez