Hi
You should be fine with the fuel,every fuel station will be selling winter fuel by now,you could try changing the filter it may be old with water and gunk in it if it hasn't been changed for a while.Try pumping the hand pump till it getts hard to pump then try bleeding out some air from the bleed screw
Are you sure the plug in works?Where was the truck parked at the dealer you bought it from? You could phone them and ask how they got it to go.
Good luck
Thomas
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews