Question about 2005 GMC Envoy

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Fuel level My GMC Envoy is experiencing problems with fuel gauge. It doesn't read the levels.

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Most likely fuel level sensor in tank.

Posted on Jul 29, 2010

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What does Fuel Level Sensor A Circut High Input for a 2004 GMC Envoy


The fuel level sensor is in the gas tank, and if it needs to be replaced, the tank must be removed from the truck.
Does your gas gauge work correctly? If not, there could be a bad connection at the tank/sensor or the sensor itself is defective.

Jul 05, 2012 | 2004 GMC Envoy

2 Answers

I have a 2003 GMC Envoy and my gas gauge has been flowing up and down to empty and full recently it has stayed on empty. How do I fix it?


Ensure that all of the wire connections are clean, secure and corrosion-free.

  • 2 Check your fuel gauge fuse if the gauge's indicator stays on empty when your turn on the ignition. If the fuse is good, join the sending unit connector to ground. Replace the sending unit if the gauge indictor moves to the full line.
  • 3 Ground the terminal located on the back of the fuel gauge with a jumper wire if the indicator doesn't move. If it does move, consider replacing the wire between the fuel gauge and the sending unit. A poor ground is frequently responsible for fuel gauge problems.
  • 4 Release the wire that connects to the fuel tank's sending unit. Confirm that there's no worn insulation that would permit wire contact to the body or frame. A fuel gauge reading of full generally indicates a problem with the tank unit, not the wiring.
  • Oct 18, 2011 | 2003 GMC Envoy

    1 Answer

    2006 ENVOY fuel guage reads empty after fill up. What is the cause and how to rectify?


    Usually I find there are two common causes for this problem. If the gauge goes to empty after a fill up but then starts to work and be fairly accurate as the fuel level in the tank drops then it's often the fuel level sending unit which is attached to the fuel pump module inside the tank. I have seen some guages go bad also [actually the servo motor that runs the gauge] but usually the gauge will stick in one spot and rarely move or go to either end of the scale and stick there. A good shop should be able to determine the cause of your problem pretty quickly. Hope this helps and good luck!

    Dec 20, 2010 | 2006 GMC Envoy

    1 Answer

    My gmc envoy having proble with gas guage always reading empty even when i fill it up


    The problem is probably the fuel level sensor in the fuel tank.It can be replaced separately.You don`t have to replace the fuel pump and the level sensor.Hope this helps.Good luck.

    Feb 24, 2010 | 2006 GMC Envoy

    1 Answer

    2006 GMC Envoy XL gas gauge reads empty after filling continues reads empty and the light is on then the check engine light came on what can be the problem how ca i fixe it to save mesome $$$


    It is most likely your fuel level sending unit has gone bad. It sits inside your fuel tank to tell the fuel guage how much gas you have in the tank.

    The sending unit for the gas gauge is in the fuel tank and part of the fuel pump module, it is not sold seperately. Price is around $350.00, 2 hours labor to install the part.


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    Feb 18, 2010 | 2006 GMC Envoy

    1 Answer

    I think te gas gage im my 2004 GMC Envoy is reading too low. How can I tell and and what could the problem be?


    if you put any gas in the fuel tank the fuel gauge needle should move toward full mark.if not you have a faulty fuel level sending unit.its in the fuel tank attach to the fuel pump assembly.

    Jan 04, 2010 | 2006 GMC Envoy

    1 Answer

    GMC envoy after I filled gas tank the low fuel light came on and as I was driving it would go off than come back on after a few miles the check engine light come on stayed on and the low fuel light still...


    You will need to replace the fuel level sensor which is in the fuel tank.They have a lot of problems because the metal fingers on the sensor wear off and gives you the incorrect readings.This will also cause the check engine light to come on.You will probably have a level sensor code.This will be a lot easier if the fuel level is down to about a quarter tank or less.Also you should be able to get just the level sensor and not have to get the complete fuel pump module.Good luck.

    Dec 02, 2009 | 2005 GMC Envoy Xl

    1 Answer

    Fuel gauge reads empty after fillup and low fuel light comes on ,goes back to normal after driving a few miles


    common problem with those trucks, it turns out to be a bad fuel level sender/module its located in the fuel tank. drop the tank, replace the sender and re-install tank. simple procedure if you know what your doing.

    Aug 17, 2009 | 2004 GMC Envoy

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