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fuel gauge shows empty

  1. 2007.5 + (GMT 900) Non Powertrain New Body Style
    I have a 2008 Silverado Duramax. It has the short bed so the fuel tank is the 26 gallon version. When I first got the truck, the gauge would read empty and the low fuel warning would display after using appx. 19 - 20 gallons of fuel. That has gradually lowered to the point where it now reads...