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new fuel pump noise

Discussion in 'GM Powertrain' started by BIG BURB, Jul 9, 2008.

  1. BIG BURB

    BIG BURB New Member

    hi guys i have a 99 suburban and i just changed the fuel pump oem:grrrrrr: and it runes great:happy: but their is a loud grinding humming like noise while it running coming from the tank:grrrrrr:. Did i get a bad pump? thanks ....tony
  2. collinsperformance

    collinsperformance New Member

    some pumps are louder than others. the Bosh HP replacement i got is so quite you almost think it was not running. the OEM one in the other truck is so loud you think it was going to explode. test the fuel pressure and if within spec ignore the sound.....mike
  3. BIG BURB

    BIG BURB New Member

    thanks man psi is good so i guess fu@$t it what noise right lol.........tony

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