Question about 1999 Chevrolet Malibu

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Gas guage no longer works when below half a tank.

I have a 1999 Chevy Malibu 3.1L V-6. Recently, the gas gauge has become inaccurate when the tank is less than half full. The gauge bounces around and slowly works up to the full tank mark despite being below half full. Once refilled, the gauge seems to work fine and appears accurate until a little less than half full. I think I need a new float. Any suggestions? Is float replacement an easy fix?

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Same thing happens with my malibu, except it works its way back up to full accurately. when its back up to full i know im almost empty. kinda weird but i got used to it.

Posted on Aug 01, 2009

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First make sure there it not dent in the bottom of your fuel tank,if that is ok the fuel sending unit may need replaced, its not that hard to do if you have a lift, make sure if you have someone fix it they only replace the sending unit not the whole moudule,there is a major price difference,but any shop will have to diag the exact problem

Posted on Jul 13, 2009

  • Rocky
    Rocky Nov 29, 2013

    I just replaced the sending unit and it still doing the same thing

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You are probably looking at dropping the fuel tank down and removing the float and sending unit ( all in one unit). Once it's taken apart, you may see that you can fix it or you may have to replace it.

Posted on Jul 13, 2009

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