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  2000 Chevrolet C3500 Base 8Cyl 7.4L

  i bought new fuel pumps and sending units for my truck the gauge is stuck on empty still i have both floats proped up
  by tuffguy2020 on 11/29/2012 - Last updated: 11/30/2012 + follow
  Answer - 11/30/2012

  make sure ground and hot at sender are not switched . use test light on ... (view)