Question about 1999 GMC Sierra

1 Answer

Gas guage is erratic

I have filled the truck up, and half the time the gas guage will read full then will go to empty then somtimes somewhere in between.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 840 Answers

The fuel pump gage is sticking needs replacement/ its pretty easy if you need to do it yourself/ Please rate my response thankk you very much

Posted on Jan 31, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Town and Country Van running out of gas and guage says half a tank what could be the problem?


If your fuel gauge is showing you in accurate readings this is normal to all vehicles that are not used to fill-up gas full regularly but sometimes the cause of the inacuracy is due to faulty float valve in the gas tank you need to replace it

May 09, 2014 | 2005 Chrysler Town & Country

1 Answer

Car of year 1998, when tank is full or medium from fuel, guage shows empty. When tank is completely empty, the guage shows full. Guage is of digital type with the bars. What can I do ? Any tests I...


Digital gauge also gets its input for fuel level from a float in the tank. Here the culprit can be that float because the error is systematic i.e., full on empty and empty on full/half. If the reading was erratic then it was something to do with IC in the bars display panel.

Aug 15, 2011 | Toyota Yaris Cars & Trucks

1 Answer

WHEN FUEL GUAGE REACHES HALF WAY THE NEEDLE WILL DROP TO EMPTY. TRY TO PUT GAS IN AND MAYBE GET 5 GAL IN AND THE NOZZLE CLICKS OFF. IT WILL SHOW 3/4 TANK THEN. I KNOW IT SHOULD TAKE MORE WITH THE MILES I...


from what you are describing you have two(2) different problems
1- the wacky gauge- its acting like a grounding issue- wires are crushed/smashed on tank connector
2- not filling - venting issue- vent line to top of tank pinched
3 solution- run tank down to 1/4 or less and DROP tank down to inspect wires and hoses- sounds like at some point in time the tank took a hit and wedged itself upwards against the underside,pinched the vent line so there is too much pressure in tank and also crushing the wires/plug causing the erratic readings(worse with less weight as the tank moves more)
if unsure of how to do this- you can get a manual such as a HAYES book at auto parts story- good luck

Jun 24, 2011 | 2004 Chrysler Pacifica

2 Answers

My gas guage stays on empty and the tank is full


Sounds like your senor in the gas tank it self is bad. Most cars have a float that read out how full the tank is and when it goes out it will stay stuck showing you on the dash that your tank is empty even though it is full.

Nov 03, 2010 | 2000 Buick LeSabre

1 Answer

Gas guage not reading accurate


Your sending unit inside of the fuel tank is probably faulty. Unfortunately you have to drop the tank to change it.

Sep 08, 2009 | 2000 Chevrolet Silverado

1 Answer

1994 Dodge Dakota Gas Guage not working all the time


Sounds like the sending unit is bad in the tank.

Jul 04, 2009 | 1994 Dodge Dakota Club Cab

1 Answer

Gas guage not working on 2001 oldsmobile Aurora


most likely you need a new sending unit, located in your tank

Jun 21, 2009 | 2001 Oldsmobile Aurora

1 Answer

Fuel guage 2001 chevrolet silverado 1500


Hi
We have the same truck that does the same thing.
The fuel sender in tank is faulty. It is in your gas tank. Common chevrolet problem.

Apr 02, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

Gas Guage


its the float in the tank i have the same problem. it also does it when it gets to 1/4 and could be empty.

Aug 17, 2008 | 1988 Suzuki Samurai

Not finding what you are looking for?
1999 GMC Sierra Logo

Related Topics:

163 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

60541 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21927 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

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

Answer questions

Manuals & User Guides

Loading...