Question about 1999 GMC Envoy

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Gas gage 99 gmc envoy

Other than the fuel pump what could cause the gas gage to not give proper reading

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  • GMC Master
  • 1,111 Answers

If your gauge is pinned in one direction or the other and doesn't move, you could have a short. If it's in different postions or just incorrect, it's is your pump. If you do not have a new fuel pump that is AC Delco, Delphi, or Denso brand, it probably IS your pump. #1 problem with guage accuracy is this fuel pump/sending unit. Aftermarkets do not last long at ALL. It is very common for most other brands to last less than a year.

Posted on May 13, 2014

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6ya6ya
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Posted on Jan 02, 2017

  • 21 Answers

SOURCE: 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

Posted on Aug 25, 2008

emissionwiz
  • 75051 Answers

SOURCE: 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.

Posted on Mar 21, 2009

  • 1 Answer

SOURCE: gas gauge on 2006 gmc envoy says empty after fill up

this is a giant comon problem right now with gm vechiles it is in the fuel sending unit the unit needs to be replaced ( about 400$) and the gas tank needs to be dropped out to get to it for many more people with the same proble go to topix.com there is about 96 of us with the same problem

Posted on Mar 27, 2009

  • 753 Answers

SOURCE: 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.

Posted on Sep 27, 2009

morse008
  • 1111 Answers

SOURCE: How do you replace a fuel pump on a 2003 gmc envoy

unfortunately you will need to drop the gas tank ....you will need a jack and jack stands for safety reasons and some tools sockets - {deep-well} and screwdrivers and patience and hopefully a warm area and pliers ........if you decide to do this first i can give you more detailed assistance on what to expect as well as difficulty level etc.....a few hours i assure you a bit of difficulty depending upon your mechanical skill and health i know i had to have mine sent out as i could only get it 3/4 the way out and i have been an auto/body mechanic and suspension paint metal etc for over 34 years but my health issues restrict me from even the simplest of tasks at times i hope this helps you in making a decision and ...................ensure in fact it truly is the fuel pump 1st have you determined this yet ? a pressure test can be made for free from most parts stores and a few major repair franchises

Posted on Dec 09, 2009

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Gas gauge readings are controlled by the sending unit on the fuel pump. I do not believe there is a separate fuse for any particular gauge. In order to fix it, you have to remove the fuel pump from the gas tank, determine if the float is stuck or the sending contacts are out of alignment or dirty. Some can be repaired, but most are not serviceable. Remedy: replace the fuel pump and sending unit assembly. I would first inspect the wiring from the fuel pump connector(s) to make sure you have good connection and wire integrity.

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