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Buzzing noise

Discussion in 'GM Powertrain' started by Minnesota Mudder, Jan 3, 2010.

  1. In the last couple of weeks i have been hearing a Buzzing noise in the rear end of my truck. The noise is pretty loud when you put your head next to the back wheel well on both sides. My truck is in 2 wheel drive when it happens it also does it in 4 wheel drive. Can anyone help me figure out where the noise is coming from. THANKS
  2. unplugged

    unplugged Epic Member 5+ Years 1000 Posts

    Electric fuel pump? Does the sound change when the tank is full vs near empty?
  3. I never thought of that but i will check it and get back to you. thanks for the help.

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