The usual cause for the hard fill condition is a restriction in the evaporative system hoses.
Check for a stuck closed fuel control valve. If spit back is the concern, there is a flapper door where the fill neck attaches to the fuel tank, if this flapper is not sealing properly it will allow fuel to come up the fill neck as the tank nears full. If this is condition is present a fuel tank is required to repair
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For some reason, your fuel tank seems to be heating up or there is pressure within the tank. Thats why the fuel spits back..the vapours inside cause the filling mechanism to reject the filling apparatus.
It could also be a block in the fuel lines, or some other reason. Its too hard to say without a manual inspection.
My best advice would be to take it to your mechanic and have him take a look at it to diagnose the exact problem.
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Code u110c ( no fuel level) Remove the gas cap from the van. Reinstall and make sure to give the gas cap a full 5 to 6 turns. The code set in the system was set by the gas cap not being tightened enough or a faulty fuel cap. If it continues to reset code then replace fuel cap on van. Hope this will help.