Fuel gauge sending unit on its way out?

[Beans71086]

So as of late when I fill the truck up and leave the gas station it'll take about 15 mins for the the gauge to register full. It just slowly makes its way to the full mark. Yesterday I was out running some errands with about a half tank of fuel. I get back in the truck after a stop, the fuel gauge does the sweep back and forth, then the fuel gauge pegs itself below the red and I get an image of a fuel pump on my dash. Normally if your low on fuel it'll say " 25 miles to empty" or whatever. But I've never got just the fuel pump light. So I started the truck and nothing changes, turned it on/off a couple times, no change. Finished my errands and parked the truck with the light still on. Got up this morning and everything was fine.

Anyone have this problem?

 

[Big Angry Hillbilly]

The last two of these trucks I've had fuel gauge issues on needed the cluster replaced.

I would get the IC checked for codes first, then progress from there. Earlier F-Series trucks used to have some sender issues but I haven't seen any on a P356 yet.