Question about 2002 GMC Envoy

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My 02 envoy chugs when fuel tank gets down to quarter of a tank

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Change fuel filter

Posted on Oct 23, 2013

  • scott williams
    scott williams Oct 25, 2013

    thanks chuck i will try that


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Have the tank vents cleaned

Posted on Oct 23, 2013

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Runs rough when low on fuel

It could be a very not noticeable leak in the fuel line or the fuel pump could be picking up trash. Also your gas tank makes a small amount of condensation which may be picked up through the pump which could choke out the motor of gas. The best thing to do is to take all of the gas out of the tank and check for rust if its a metal gas tank. Also if there is water from the condensation in the gas, I would not run the gas that you take out of it.

Posted on Jan 12, 2009

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SOURCE: fuel gets to under a quarter of a tank and engine

Might have got some bad gas at one time and when gas is low in the tank whatever is in the tank clogges up the fuel pump screen.

Good source for Kia its free to register NO STRINGS

Posted on Jun 01, 2009

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SOURCE: sparatic chug while idling,

fuel pump is going bad. are the fuel filter is plugged. the fuel pump may have a screen (sock) that maybe plugged.... try the fuel filter first

Posted on Jun 01, 2009

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SOURCE: fuel guage on 2000 pontiac bonneville sle goes up


Posted on Mar 08, 2010

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SOURCE: My gas gauge on my 2001 oldsmobile silhouette goes

In Canada Canadian Tire sells a fuel additive to put in the tank and fill up with gas (must fill up to cover sensor in tank ) might take two appliciations but it worked in mine

Posted on Apr 21, 2010

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I have a 1993 buick roadmaster limited that makes a chugging noise when im not going very fast and it goes away when i either hit the gas hard or speed up past 30 mph. it dies every once in a while when i...


I read your problem complete, and understand this is frustrating. From what I can tell by your description is a few things that can cause this. If you run the gas down to low lots of problems can cause things to go wrong more than people think. I always myself and tell others always if possible to never run gas lower than quarter of a tank if possible. What happens, especially on older model cars, they will pick of years of junk in the bottom of the fuel tank and it will partially clog fuel filter or of course make your fuel injectors partially clogged, WHICH would for sure cause all your symptoms described, chugging at low rmp and speeds, all most dieing, and even cause some over heating issues as car is working to hard. Solution to this of course is, most any shop can clean your injectors, they hook it up,and run a injector cleaner direct through the line. ( not the junk you add to fuel tank to clean injectors, most of that stuff just a rip off) And the fuel filter almost any oil change place, or same garage that cleans your injectors can replace fuel filter.

Next thing and most likely final thing that would cause this based on your description of the symptoms is 02 sensor. Which is part of your emissions. Most cars have up to 4 sensors. The one I believe that could cause this, is the one nearest your Cadillac converter. Again, places like AUTO ZONE, can check your sensors with there hand held computer and see if there is a faulty one, as well as most garages of course can do this.

In conclusion: You can do this yourself, but because of your symptoms and if you don't want to play the game of find and replace, then it is best to take it to a reputable garage (not dealer, to expensive) and have them replace fuel filter, which is never a waist of money, and clean injectors which is always good to have done, as better performance and fuel mileage, and then have them CHECK, with computer the 02 sensors, to see if one is not working or acting up. I believe this is where your problem lies, only other place could be would be fuel pump itself, but i think that would be last case scenario, if others don't fix problem. And fuel pumps can be expensive and hard to get to on a lot of models. so try what i suggested first as I believe that is the area of problem.

Thanks so much, Mike from Fixya,

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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.

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Chugging down? Do you mean your engine is almost stalling? Sounds like your fuel filter is clogging up. Change it before your fuel pump dies. A Fuel Filter's like $10 - $15.

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