Question about 2006 GMC Envoy

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Gas gauge not woking properly gas tank only accepts a little gas

2006 gmc envoy issue started about a week ago check engine light is present as well

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  • Anonymous Dec 03, 2008

    I have the same problem with mine. The dealer told me it is the fuel sensor in the tank and will run me about $500 to fix it since my warranty is expired.

  • julssbo22 Mar 29, 2009

    My gas gauge just started doing this today.. i have a 2005 envoy. no warranty left. i filled up the gas this morning, and when i start the truck it goes all the way up like it should, but slowly goes down as i'm driving. so frusterating.

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I had the same problem. My gas gage would read full and as I drove the gage would read empty; even when I had a full tank of gas. All I had to do is buy a new gas cap... yes that is all! $15.00 and a day later the gas gage is fixed.

Posted on Jun 23, 2009

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A fuel sending unit seems to be the most popular solution. the part is about $40. I think the labor is what's going to kill you.

Posted on Dec 17, 2008

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ENVOY FUEL GUAGE PROBLEMS--- GAS GAUGE DOES NOT REGISTER ON FILL UP--- CHECK ENGINE LIGHT COMES ON WHEN YOU FILL UP -----THEN GOES OUT AFTER 1ST. 20 TO 40 MILES. BEN GOING ON FOR LONG TIME ONLY WORRY WHEN...


GMC sent me a letter saying that gas guage not working has been a problem and they will fix and pay half.
Also my mechanic says that it is common to get a check engine lite when you add gas to tank, especially when you fill it. Sometimes I will take off gas cap and let air out then replace cap and the check engine lite will go off. (usually). Nothing to worry about.

Aug 05, 2011 | 2006 GMC Envoy

1 Answer

Our 2006 GMC Envoy's gas gauge started going up and down the last time we filled the tank. After driving for a while, it settled down and did fine. However, tonight when we filled it with gas, it started...


{: ) It is still safe to drive as long as you are aware you have enough gas for the trip. The problem is your fuel level sensor could be getting erratic and sending inaccurate signals to the engine control module, thus illuminating the check engine light at times. If you unexpectedly run out of fuel, thats when you will stall on the road. Better have it checked as soon as possible.

Nov 05, 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

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.

Sep 27, 2009 | 2006 GMC Envoy

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 inoperative


The sending unit in your tank is bad replace it.

Jun 04, 2009 | 2006 GMC Envoy

2 Answers

Fuel Sensor is not working properly


U must replace the fuel gauge sending unit to correct the problem with your gauge, the sender is located inside the fuel tank, the tank must be removed to replace the sender.

Mar 21, 2009 | 2006 GMC Envoy

2 Answers

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.

Feb 24, 2009 | 2005 GMC Envoy Xl

1 Answer

2006 GMC Envoy XL gas guage


most likely a fuel sending unit problem in the tank. could also be problem in dash but sending unit is first suspect

Nov 16, 2008 | 2006 GMC Envoy

8 Answers

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 on.


The sulfur content in the fuel is contaminating the contacts of the sending unit.

Some people have had good luck with some fuel system cleaners solving this problem. The cheap stuff doesn't seem to do the job.

Not that GM isn't completely exonerated from fault but the gas stations don't do a very good job of watching what the stations sell.

Sep 03, 2008 | 2006 GMC Envoy

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