Fuel Is my fuel pump going?

After a 4-5 hour highway drive this summer, I heard a strange noise while running and parked at home. It was a whistle more than a whine. It was somewhere out back, and I suspect the fuel pump. The noise left when the vehicle cooled off. It happened again today in 30 degree weather. I usually have seen pumps work or not. Am I missing anything else back there that could make whine/whistles outside the rear of the car?

The odd thing is how it only does it after a long trip. And it has to be running. Unless there are other ideas of something back there electronic/electric that would be louder from the outside, I will check the vent line then replace the pump. I will listen closely for grinding untill then.

Without a trip, the noise does not replicate. No growling either, but I do think I heard some right after the last trip when it first started powered up. I think the vent line to the canister is OK. The pump is going to be replaced based on mileage anyway now.

Here is why I really wanted to post. I do not know how much AAA is (nor AA for those whose cars run on ethanol), but on my policy, roadside assistance with towing is $20 to cover ALL my vehicles on the policy. Seems like a no brainer when I do not usually buy new cars. It seems some of the other charges should be that way as I can only drive one at a time. Oh well, I am not in charge. The newest vehicles we have bought are lightly used, then we drive the wheels off of them. We'll use it sooner or later.