i bought a 98 tahoe the truck is runnin good but... all i hear from the fuel pump is a hummin sound .. i listened to a friends truck and his pump stop hummin 2 seconds after its running . mine stays on and its loud.. i put 3000 miles on it like this and its doesnt seem to be doing any harm.. but the noise is annoying..what can i do is this pump broken or what?? THANKS ...

 

The Fuel pump should be fine. I know the pump in those years of trucks make noise. My dad's 97 does it. You will know if you have a fuel pump problem because the computer watches the amp draw on the pump, and if it starts to pull high amps, it will shut it down. I wouldn't worry too much about it.

 

They make more noise from filter back pressure as it gets dirtier over time. The fuel filter is located on the inside of the driver-side frame rail about where the rear of the driver seat is.
Sound from the fuel pump is normal. At idle it is normally louder than exhaust.

 

ditto i've had a guy actually come up and ask me why my truck was makin that noise. I told him it was a blower.
That sound means its actually working learn to love that sound when it stops is the day your gonna need a new pump

 

I"m glad somebody posted this up because my 03 truck does the same thing and i was getting kinda worried.

 

My 98' I used to have did this same thing w/ only 60K miles.