2003 FXDL fuel gauge stopped working

Putting gas has nothing to do with you fuel gauge problem
Must problems to add fuel and comes out can be cause by air flow in the tank, also it is recommended to fuel with the engine turn off so the pressure from fuel pump going back to the tank will not affect the fueling , about you fuel gauge not working properly can be cause by a electrical problem such wiring or defective gauge or can be fuel sender problem with most the time it is install on fuel pump assy.

Remove the instrument console and the front and rear mounting bolts and then the instrument wiring and the overflow hose and the fuel line at shut off valve making sure the valve is "OFF" and drain the tank and then remove the crossover hose at one side and plug line and hose and then disconnect fuel gauge connector at left side of frame under the tank.

Check your fuses

if it was a fuse they would all stop working as it is a electronic cluster. most likely a gauge fault but you might run down the wiring with a volt meter, where the voltage stops is where the issue is. also you might verify you fuel sender is working and check voltage to battery while running

All your gauges are working. The gas gauge Is also working. When you fill it, you will fill over the limit the fuel level switch will go by a couple of gallons. So the gauge will not drop for a few miles. until you use up the excess fuel

I can't understand how the bad cluster would prevent you from fueling. The instrument cluster can be repaired. Look up specmo.com . I had mine repaired there. Quick turnaround. Previous to using Specmo, I tried Two parts from salvage yard and both turned out to be bad. Dealer wanted about $500 to do the repair. I did removal and install, Specmo repaired my cluster for around $125.

you have 2 recalls
pcm update fuel pump replacement
fuel pump module replacement and pcm software

can you tell me why does the gas thing does not go up when i fill up

change gauge all