Diesel Bombers - Fuel gauge, and fass issues help!

Today i was out and about, i noticed my fuel gauge was staying in the same spot, went into the store and came back out, started the truck up and the gauge moved up a little bit right under the e red line, so i thought i better get fuel just in case, went to the gas station put some in it got back in the truck started it and noticed nothing changed, i looked at my fuel psi gauge and it said 0 so i turned ghe truck off and popped the hood for a quick glance, got back in the truck and bumped the starter and no noise from my fass, so i decided to get it back in the parking lot ans turn it off so it wouldnt hurt the vp, parking lot was about 30 yards away from the pump, on the way there my fuel psi gauge came back to normal so i decided to get it home, on the way home heard sone grinding noise coming from the passenger side when i was slowing down and apeeding back up, only heard it twice i know my brakes need changed so i looked at the rotor and no marks from metal to metal was too dark to see the pads, i figured if it was them it would of did it everytime i hit the brakes, so now my truck sits with a non working fuel gauge and, not sure whats going on with the fass and the noise, can anyone help me out here? Thanks!

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