Question about 2003 GMC Yukon

3 Answers


When I fill the tank with gas the fuel gage jumps all over the place; from empty to half and etc.. When 3/4 tank full it's okay. What's up with this. OH, it happened when I woke up one day. ( just kidding about time). Please help, can I do this myself?

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Irish your helping me with my tv i'll tell you i worked at gm dealer for years i say sending unit you either have to drop the tank or there my be a hole in floorboard over sending unit if you don't want to drop the tank and you can see where to cut a hole makes life much easier just cut 3 sides square peel back when done bend back and silicone that is the easiest but hack way

Posted on Dec 16, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Had the same issue a year ago with my 2003 Yukon. It was a defective module for the dash cluster and was covered under SPECIAL COVERAGE Adjustment #07187. Not sure if it applies to the 2002 model year.

Posted on Nov 04, 2008

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 37 Answers

I would say that you could have one of two issues.
1 being a bad (intermitten) ground.
2 the rheostat on the sender is bad.
i have had this issue with a 1995 impala. the only issue is that you have to drop the tank to fix it.
i have tried to find the rheostat only for my car but gm doesn't sell it seperatly.
first , check the ground comming out of the tank and make sure that its good. if not, a new sender is needed.

hope this helps


Posted on Oct 07, 2008

1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My gas guage is not holding actual fuel level, its a 2002 GMC Yukon. Goes from empty to full within seconds and the tank is full.

Typical gm problem, the float assembly or a ground wire, Ive always run across it being the float which can be bought through the dealer seperately than the whole pump w float assembly.

Jul 27, 2010 | 2002 GMC Yukon XL

1 Answer

Fuel gage problem

Its most likely the sending unit in the fuel tank is not working properly and needs replaced.

Mar 31, 2010 | 1998 GMC Jimmy

1 Answer

Wacky fuel gauge.

to coorrect this u will need to pull the gas tank and replace the fuel gage sending unit inside the gas tank, hwerwe is the part number for the fuel module which has the seding unit in it.
ACDELCO Part # SK1158

Jul 06, 2009 | 2007 GMC Envoy Denali

1 Answer

Gas guage moves back and forth from emty to full with gas in it

it sounds like the level sensor on the sender (fuel pick up pipe in the fuel tank) is getting stuck. the level sensor is a float that is attached to the sender, and you will need to remove the fuel tank to get to it.

hope this helps.

Mar 18, 2009 | 2000 Chevrolet Blazer

1 Answer

Fuel gage goes to zero and then to full while driving

Sounds like the sending unit is bad, which is in the gas tank.

Mar 15, 2009 | 2006 GMC Envoy

1 Answer

Gas gage constantly says full when it's not!

Unfortunately this is most likely the fuel pump module, which includes the fuel level sensor also. This should be diagnosed more thoroughly with a scanner, a good scanner will be able to check instrument cluster separately to confirm the gage is working right,and check for trouble codes that may not light any warning lamps. Hope this helps. Rate me please.P.S. Dont use that fuel station any more.

Jan 21, 2009 | 2002 Chevrolet Malibu

1 Answer

I need help resetting my 94 GMC seirra's gas gage

the gas gauge is on the fuel pump assembly with in the fuel tank, you must have bumped it during reassembly. the only solution is removal. pull it out check for alignment and binding, reassemble being very careful. hope this helps.

Nov 05, 2008 | 1994 GMC Sierra

1 Answer

Yukon XL - Gas guage not working

you have a broken sending unit . it could probably be located inside the tank. must be replaced. can not be repaired.
have a sending unit ready and bring down the tank then replace it.

tnx 4 using fixya,


Oct 17, 2008 | 2002 GMC Yukon XL

1 Answer

Gas gage

It could be the fuel level sending unit is stuck or going out. It's in the gas tank.

Jun 09, 2008 | 2002 Ford Mustang

Not finding what you are looking for?
Cars & Trucks Logo

108 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

70346 Answers


Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides