Ok, my fuel pump started to hum really loud the past couple of days ago, right around 90k miles on the clock. It was so loud you had to turn the stereo up pretty high just to hear it.

So after reading a couple of threads on here I decided to change the fuel filter first, a $9.99 Fram filter. Very easy job. Located right under the rear, driver's side seat, in front of the rear tire. You have to release the fuel pressure first by removing the gas cap and releasing the pressure from the Schraeder (sp?) valve located directly behind the intake under the hood. You will need plenty of rags when under the hood.

Under the car, it's wise to have a bucket for gas that will spill, including eye goggles because you don't want gas in your eyes! To avoid spilling lots of gas, I loosed the nut first (don't take off right away, just loosen) and then disconnected the "quick-connect" with my fingers (no tools), then went back and disconnected entirely the nut. Let as much gas spill out before you disconnect the other side, that way nothing is flying around while the filter is moving. In total, I had a couple of ounce of gas spill, not too much, but provided you release all the pressure in the lines, you won't have any issues.

When installing the new filter, the GM shop manuals recommend you to lube the male end of the filter with some motor oil to condition the seals. Also, you might want to use some compressed air and spray that in the line connections to get any loose dirt that might have fallen in there. Then bolt right up!

Before startup, turn the ignition key to on, but don't crank. This allows the pressure in the lines to get back to normal. Do this 2-3 times. Then crank.

When I did, the whine and humming from the fuel pump went away and the response from the throttle felt much improved. Definitely saved me from spending some boku dollars to replace the fuel pump when it didn't even need it.

There's no recommended interval for replacing the fuel filter, but for the amount of time it took to do the job (probably 30 minutes for my first time) I think I'm going to do it once a year or so.

Hope this helps someone else out!

 

THANK YOU!

Right now it sounds like a dentist is trying to drill his way into the hatch. I thought I was gonna have to replace the pump, hopefull this will take care of it.