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Posted on Nov 16, 2008
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2006 GMC Envoy XL gas guage

When i fill the tank with gas the gauge reads full then starts to go down in a couple of minutes and says empty. Just started happening.

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  • 1 more comment 
  • ogbon001 Dec 12, 2008

    I have the same problem. I have a 2006 GMC Envoy - Each time I feel the tank, the pointer either remains on the empty (Yellow Light On) or it gradually goes up to full after a few start and stops, then it drops again to empty with beep and the yellow warning light on again. I just replaced the gas cap with a brand new from a local dealer. It did not help. It is frustrating. Please help. George Ogbona

  • Anonymous Mar 13, 2014

    I filled tank and gas guage still shows empty

  • Anonymous Mar 28, 2014

    gas gage does not go to full when filled up also the dic just started giving erradic readings in the miles to empty areA

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1 Answer

autodr

autodr

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  • Posted on Nov 16, 2008
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Joined: Oct 21, 2008
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Most likely a fuel sending unit problem in the tank. could also be problem in dash but sending unit is first suspect

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Related Questions:

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1answer

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!
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Dec 20, 2010 • 2006 GMC Envoy
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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
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When I fill up my 2006 Envoy the gas gauge will register to the full mark as i start to drive the gas gauge drops down to empty. It will rise back up now and then and drop back down to empty. what could be...
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Jan 18, 2010 • 2006 GMC Envoy
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I have a 2005 GMC Envoy and recently every time I fill up the gas tank, it shows that it is full and then drops down to empty and then will keep bouncing around to half full, full, empty. This has happened...
it sounds like the fuel level sensor in the gas tank is bad,causing a misreading and fluctuation,,replace it and that should help,,
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Oct 09, 2009 • 2005 GMC Envoy Xl
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2006 GMC Envoy gas gauge not functioning properly.
GM had a problem with the fuel sending unit cards inside the fuel tank,If you replace that you should be good to go.
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Sep 27, 2009 • 2006 GMC Envoy
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Gas guage-oxygen sensor?
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.
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Sep 04, 2009 • 2005 GMC Envoy Xl
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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
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Jun 13, 2009 • 2006 GMC Envoy
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The sending unit in your tank is bad replace it.
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Jun 04, 2009 • 2006 GMC Envoy
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06 envoy xl - gas meter stays on empty it really never comes up sometimes when its initially turned on it goes up then falls back down to EMPTY.. any suggestions? could this be a fuse problem??
this is caused by one thing only, the gas guage sending unit is defective, this fuel gauge sending unit is part of the gas tank mounted fuel pump module, cost $360.00. see photo.
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Apr 15, 2009 • 2006 GMC Envoy Xl
1helpful
2answers

2006 GMC Envoy XL gas gauge reads empty after filling, then slowly moves up after driving but will continue to lose pressure until it reads empty and the light is on, then the check engine light came...
Sending unit. Its all one unit including fuel pump, float, ect. The check engine light is because of the high or low resistance in the unit. Let me know if you have already fixed.. You have to drop the tank to get to it also.
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Feb 24, 2009 • 2005 GMC Envoy Xl
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