Question about 2004 GMC Envoy

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Defective gas gage

My wife ran out of gas for the second time but the gas gage was more than a quarter full

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  • Anonymous Mar 29, 2009

    my gas gage floats full then empty, until it runs empty & still looks like its a half of tank!

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I have a 2001 GMC Jimmy that does the same thing.my suspisions are the float on the fuel pump inside the gas tank

Posted on Feb 25, 2009

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3 Answers

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The sensor in your gas tank needs to be replaced the good news is you can but just the sensor and NOT have to buy the entire unit.

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Hello
This problem is caused by only thing, it is a defective fuel level sending unit inside the fuel tank. To replace this part requires the fuel tank be removed from the vehicle.

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They could have installed the wrong pump assembly. I would first check to see if the float arm is binding on something not allowing it to reach the empty position. If you take the assembly out, have the key onand work the sender up and down thru its travel and see if the gauge matches the sender position. Disconnect the wire going to the pump so it doesn't get damaged.

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