Why is my fuel pump making weird whinning noise in the gas tank?

I have a 98 chevy astro van that has started making this weird noise. I can really here it when I am at idle speed and when I turn of the engine it keeps making for about 5 seconds then it stops on its own. Why is my fuel pump making weird whinning noise in the gas tank?
The pump is going out..Why is my fuel pump making weird whinning noise in the gas tank?
I bought my silverado 4 years ago and my pump has been whining since I got it. It gets louder when I let it get low on fuel. I have worked on cars for more than 15 years almost all GM's do it. It may or may not be on it's way out. The whine is not a sure fire way to tell. If you are unsure get it checked the part is about $80 aftermarket but much more for labor to install it. Piece of mind goes a long way. Good luck.
its going out if it makes a squealing noise that you can hear,sometimes they will also make a whistling noise,either way if you can hear it that bad its going out and will have to be replaced,the only thing you should hear is a slight humming sound from it,good luck.
it might be the bearing in the pump. try this! lucas has a treatment out that lubes the pump, maybe it,s dry.
in tank pumps start to make this noise with time, its relatively normal, will need to be replaced at some point, its hard to say when
The pump is probably about ready to go out on it.
i wouldn't be surprised if the pump stopped working soon.
Yup - sounds like a fuel pump death whine.