Question about 2007 GMC Envoy Denali

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Gas gauge filled up gas tank and low fuel level light comes on and gauge reads empty

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  • jshonis Dec 31, 2008

    Same peoblem with 2006 Envoy- gage actually worked intermittently, now doesn't move at all-

    figured it was mechanical (ie- float stuck)

  • Anonymous Feb 15, 2009

    how do you get it free?

  • msjayejaye May 17, 2009

    gauge fluctuates drops to empty when you know you have gas.sometimes after sitting over night still reads empty.then let it sit and will register to normal position/2007 envoy

  • Anonymous Mar 16, 2014

    Filled up gas tank and the fuel indicator light doesn't show fuel level of my mercedes e320

  • Anonymous Mar 18, 2014

    fuel gauge improper readings

  • Anonymous Mar 29, 2014

    my gas gauge is not working properly will my gas light indicator still turn on when gas is low ?

  • Anonymous Mar 31, 2014

    low fuel warning light stays on the dashboard even after filling the gas tank.

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  • 32 Answers

The float that moves the gas hand is possibly stuck in the tank. If there's isn't an access hole in the rear of the vehicle you'll have to drop the tank. Unless it becomes free on it's own. Hope this is helpful. Please rate. Thanks

Posted on Sep 28, 2008

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You don;t say whether the fuel gauge is reading accurately, or whether it's always on empty. If the gauge is always showing empty, it's most likely a problem with the sending unit in the fuel tank. Check the resistance across the two terminals of the sending unit.

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Possible problems are: electrical line off or broken, float not working (it's fairly delicate); or gauge not working.

Test the resistance of the sending unit with the lines disconnected, the resistance should be 2.6 to 3.8 ohms full tank, 63.3 to 67.5 ohms empty tank; and test for voltage across the top of the sender unit, if no voltage, that's likely the problem!

If the gauge is otherwise reading accurately (showing 'full' for a full tank, etc) then the problem is likely a gauge malfunction and can be simply replaced.

Good luck!

Saabreur

Jul 10, 2008 | 1989 Saab 900 4 Door

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