Question about 2006 GMC Envoy

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Fuel gauge probelm 06 envoy

My fuel gauge keeps moving emty to full when theres gas in it... What do u think it could be ..Thanks for you're help

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  • amerr2323 Dec 28, 2008

    This just happened to me as well and there is this weird sound coming from my dash... Anyone know what this is all about??

  • jshonis Dec 31, 2008

    I have same issue with 2006 Envoy-

    posted problem & waiting for answer- major hassle trying to estimate gas usage when every other day I sit idling in heavy traffic-

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Call dealer have your vehicle VIN# ready ask service department to run a check to see if a call back was issued on this problem I would not be surprised if you were told it needs to be brought in for that re-call!!!!but if i'm wrong then consider looking into ascending unit in tank or gauge in dash? hope this helps you guys out.John

Posted on Jan 24, 2009

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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

    Gas gauge goes full emty full emty gaugegenerly reads full but latly its up and down truck runs then wont


    You need to test the gauge and the sending unit in the gas tank itself. In most cases I find this is the sending unit in the tank. Unfortunately, that is usually combined with the fuel pump in 1995 and newer vehicles which means you have to replace the whole unit. If you have 2 opening to your tank with wires coming from both you have a separate level sending unit from the fuel pump. If there is only one they are combined. Check for shorts on those wires.

    Jul 29, 2011 | 1999 Chevrolet Silverado 1500

    3 Answers

    The gas gauge keeps moving back and forth what could be wrong


    Fault in the vaiable potentiometer fitted in the tank for the sensing the level of the fuel. This can be worned out over a period of time and loses contact at some points.
    So open check or replace.

    Sep 14, 2010 | 2006 GMC Envoy Xl

    2 Answers

    Gas gage read full when empty and sometimes emty


    You have a bad fuel level sensor.The fuel tank needs to come out and the sensor replaced.You don`t have to replace the pump assembly.You can get the level sensor separate.I`m not sure if the parts stores have it but I know the dealerships do.Hope this helps.Good luck.

    Mar 16, 2010 | 2004 Pontiac Montana

    1 Answer

    The gauge moves around all the time from full to emty and back again


    sounds like a gas level unit is bad. and im 90% sure it comes in a complete assembly with a new fuel pump.

    Jan 14, 2010 | 1998 GMC Suburban

    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

    1993 Jeep Grand Cherokee Fuel Gauge not working


    There could be two problems here:
    1. That buoy floating tank is not working properly
    2. That the electrical system that fails to submit the dashboard.

    Review this information:
    - ZJ-Secc-8E-Instrument-Cluster-and-Gauges
    Page 2 - Fuel Gauges description
    Page 4 - Voltimeter/Tachometer/Fuel Gauge/Low Fuel Inoperative
    Page 10 - Specifications
    - ZJ-Secc-14-Fuel-System
    About Fuel Tank components
    - ZJ-Secc-8W-Wiring-Diagrams
    Fuel Tank and Gauge & Sensor Units Sending (Page 93 and next)

    Good luck... and remember rated this help.

    Jun 13, 2009 | 1993 Jeep Grand Cherokee

    3 Answers

    Gas gauge problems


    Common problem on the 03-06 Envoy instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Envoy fuel gauge problems

    Jun 13, 2009 | 2006 GMC Envoy

    1 Answer

    Gas gauge


    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

    Sep 28, 2008 | 2007 GMC Envoy Denali

    1 Answer

    2006 envoy gas gage


    your gas gauge sensor is most likley the problem on alot of new cars they measure your fuel off an average of were your float is at. like if your not moving it stays in one spot but as you move the float moves and reads the lowest amout that it is averaging and if your float keeps reading low your going to read that you have alot less gas than you really do. have you tried filling the tank all the way and see what it does? if it stays at full until you use some gas and your float starts moving your gas gauge will probley go down in that case its the fuel sensor if this dont help let me know and ill c what i can find out for you

    Aug 25, 2008 | 2006 GMC Envoy

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