Question about 1996 GMC Sonoma

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After putting a fuel pump in the gas gage wont work now

Its reading full all the way past fuel the float is working so what could be the problem?

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Its posible that in the proces of installing the pump
your float got stuck .or it shorted out its a not uncomon that on GM
they fail very often just by removing them

Posted on Jan 15, 2013

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6ya6ya
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Posted on Jan 02, 2017

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Richie_asg1
  • 1036 Answers

SOURCE: Gas gage doesn't work

It is possible the sender has failed, and can be replaced.

This sits in the fuel tank, so access has to be gained, usually be removing rear seats, access cover, and removing rivets and fixings.

It would be worthwhile to gain access to it and check first for any corrosion on electrical connectors. With a meter, you can check if it is working or not. If not - order a replacement before replacing it.

Please observe all safety precautions when working on fuel systems.

Posted on Dec 31, 2008

  • 1201 Answers

SOURCE: fuel gage goes to zero and then to full while driving

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

Posted on Mar 15, 2009

Molson02536
  • 3854 Answers

SOURCE: when empty fuel gage show

If your lucky, it's the wire harness from the frame to the gas tank. If your not lucky, it's the sending unit in the gas tank and that's expensive.

Posted on Apr 05, 2009

BuzzFlewhart
  • 655 Answers

SOURCE: Fuel guage is not working on my 95 GMC Yukon it

BINGO ! ! The fuel indicator mechanism is IN the fuel pump assembly (in the gas tank). Apparently the mechanic that did the work did NOT hook up the wiring harness OR the float is jammed. Go back to who ever did the work and COMPLAIN.

Posted on Nov 22, 2009

  • 1 Answer

SOURCE: 2000 gmc yukon turns over not getting gas wont

i have an 03 yukon and i just replaced the fuel pump and it ran for 2 hours then it just died on the highway. it turns over but will not start. whats wrong with it???

Posted on Jun 13, 2010

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1 Answer

Just replaced fuel pump/sending unit in a 2004 Bravada for a no start condition....now the gas gage doesn't work? Dropped the tank again and put OLD sending unit in....key turned on tank reads full (full...


Your replacement fuel pump assembly float got stuck somehow rendering it useless. also make sure the electrical harness was connected properly on the replacement. I take it for granted that the replacement was new? Perform a bend test on your replacement fuel pump assembly with an ohm meter. Move the float and see if the ohm meter resistance changes.

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1 Answer

Fuel gage aint working


all parts may be new but if the fuel gauge sender float has been bent when being installed into tank this will give false readings - if the float has been bent up during installation then it is likely that it will only read fro three quarters of a tank up as the float can not get any lower due to being bent, I recommend that a new pump/float is installed very carefully.

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sounds like a bad float / sensor or just a bad ground.
Check the connections where the fuel pump goes into the gas tank. Make sure the ground is good and solid and not rusty. If wiring is good the float is probably bad

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1 Answer

Gas gauge reads full all the time


hello, it sounds like it has something to do with your fuel sending unit located inside your gas tank,on the sending unit it has a float arm that reads the fuel level, some times that float arm gets jammed and wont show your actual fuel level,to fix this with your gas tank at least half full use a rubber mallet or any other object that wont damage the tank and with your key in the start position with the car not running but reading your gages hit the gas tank not to hard but hard enough to lodge the float arm loose, if this is unsuccessful then it will probably be a bad fuel sender location sensor located on the actual fuel sender if that's the case you'll need a new fuel sender. good luck and please send me a update or any questions let me know.

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