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Gas gauge always reads full - 2003 Chevrolet Venture Passanger

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  • Chevrolet Master
  • 5,568 Answers

The unit that sends level info to the gauge is defective; this normally doesn't happen instantly but will show up usually as an erratic movement of your indicator.
The sender unit is a variable wire-wound resistor with a wiper attached to the float and the wire element does wear through sooner or later.
It is probably necessary to remove the gas tank from the vehicle to replace it unless the engineers were smarter than usual and provided an access hatch from inside the vehicle.
The senders are not expensive but depending on how twisted the removal and reinstallation of the tank is, the labor will be the larger cost item.   

Posted on May 24, 2009

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  • 2 Answers

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Posted on Jan 02, 2017

CMV9
  • 594 Answers

SOURCE: gas gauge reading empty even when tank is full

Usually if the gas gage does not work yes it is true it may be the sensor if it is electronicly controlled. the sncor will more than likley be in the tank. here is how to remove your gas tank.

  1. Before servicing the vehicle, refer to the precautions section.
  2. Relieve fuel system pressure.
  3. Drain the fuel tank.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Fuel filler and vent hoses
    • Fuel tank skid plate
    • Fuel tank wiring connectors
    • Fuel supply and return lines
    • Fuel tank
    • Fuel pump assembly
      7924bg17.gif Fuel pump assembly mounting
To install:
  1. Install or connect the following:
    • Fuel pump assembly
    • Fuel tank. Tighten the bolts to 27 ft. lbs. (36 Nm).
    • Fuel supply and return lines
    • Fuel tank wiring connectors
    • Fuel tank skid plate
    • Fuel filler and vent hoses
    • Negative battery cable
  2. Start the engine and check for leaks.

Posted on Apr 16, 2009

tjspear
  • 66 Answers

SOURCE: 92 k1500 5.7L tbi fuel gauge always reads full and

Two possible problems.... the temp gauge wire is a single green wire attatched to the driver's side head (no1 bank) near the front in the side (in front of plug #1) ground it and your gauge should go to full hot,,, same with the fuel gauge, if you unplug it at the tank it should go to empty, or visa versa... if the gauges respond, replace the sending units, if they don't, replave the instrument panel

Posted on Sep 12, 2009

Testimonial: "i would have given a 100 percent, but i've got more questions... but still very helpful"

  • 468 Answers

SOURCE: 2000 Buick Century gas gauge reads full all the time

You're either looking at a short in the wire that goes to the fuel sender, or a bad fuel sender. If it was just a broken wire, it would read empty instead. The fuel sender is a permanent part of the fuel pump, so that has to be replaced as a unit.

Posted on Oct 20, 2009

emissionwiz
  • 75822 Answers

SOURCE: Gas gauge is not reading correctly. Shows a full

the problem is caused by a defective gas gauge sending unit, this part is located inside the gas tank, you must remove the gas tank to replace it.

Posted on Dec 02, 2009

  • 3640 Answers

SOURCE: my 1992 chevy 1500 fuel

it is a stuck sending unit in tank, it could be the gauge, but theu usually do not go bad. have a good day!!

Posted on Nov 01, 2010

Testimonial: "got the answer i needed was hopeing for an easier solution but this is fine"

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1 Answer

1991 chevy 1500


Usually the sending unit is not connected, the sending unit is stuck on full, or the gauge on the dash is faulty. You would unplug the harness at the tank and check the circuit for power from the gauge.

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1992 gmc sierra pickup gas gauge always reads full


REPLACE SENDING UNIT THAT'S INSIDE THE TANK

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Put in new fuel pump and sending unit. but my gas gauge doesnt always work. sometimes is does and sometimes it doesnt


if it worked for a short period of time after doing the pump/sending unit the check the connections going to the pump/sending unit they would have been moved around doing the pump

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How do I fix the gas gauge? It always reads full


sounds like the sending unit is not working

Dec 26, 2011 | 1999 Oldsmobile Intrigue

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Gas gauge always reads full, and then bounces from full to empty


This problem is only caused by one thing, and that is the gas gauge sending unit inside the gas tank is defective, it will need to be replaced to correct this. The gas tank must be removed from the truck to access the sender assembly.

Mar 02, 2011 | 2000 GMC Jimmy

1 Answer

Gas guage always reads full


It could be a faulty sending unit, which will require the removal of the fuel tank. Make sure all of your fuses are good before you do anything else, as all the gauges are electrical. It is possible you have a bad gauge, but 9 times out of 10, it's the sending unit.

May 24, 2009 | 2003 Chevrolet Venture Passanger

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Fuel Gauge Not Reading


sounds like the float isnt sitting proplery in the tank

Apr 16, 2009 | 1997 Chevrolet K1500

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Gas Gauge


hello,
the problem could be in the sending unit. this is a wired potentiometer and if you have a broken wire in the potentiometer, then that is what would happen.

you can verify this by grounding the sending unit wire to ground. you will have a full tank reading always. then use the car and see if it will still bounce and very erratic. if does not do that, then the sending unit is the problem. if it still do the erratic reading, then there are more problems.

Dec 11, 2008 | 2004 Saab 9-3

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