Just picked up my 1998 GMC Sierra 1500 from the dealer on Friday. Filled it up with gas and now I'm hearing the fuel pump humming quite loudly. I've searched the archives here and have found that this is a common problem with this model. Dealer also tells me it's normal. My question is how much noise is this supposed to make? Mine is quite noticeable. When I'm driving with the windows down I can still hear it whining. When I come to a stop, it's really noticeable. If it's just sitting in the driveway running, I can hear it from about 30-40 feet away. The truck runs fine, but being that loud, it just doesn't seem "normal" to me.