Question about 2005 GMC Envoy Xl

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Gas guage-oxygen sensor?

I saw earlier several soultions to the gas guage problem with my '05 Envoy. Some were drastic and some were not. Mine shows empty immediately after filling up. For a second the guage goes to Full and drops back down to empty. Sometimes after the car sits over night, it fixes itself and shows the correct amt. of fues. Someone said something about an 02 sensor, but which one? there are several!

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  • goldwings121 Sep 04, 2009

    I obviously can't spell today. Hope you all understand what I am trying to say!

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The oxygen sensor has nothing to do with the fuel gauge. There are two possibilities for the gas gauge error, first it could be the in-tank gas level sensor or it could be a defective stepper motor which drives the gauge. A professional scan tool can determine the fuel level being sent by the in-tank sensor, if that disagrees with the gauge, then the stepper motor needs replacing.

Posted on Sep 30, 2010

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Posted on Jan 02, 2017

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