Question about 2003 Chevrolet Silverado 1500

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My gas gauge is not working it looks like i have 3 full tanks on the gauge, how do you fix this

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  • Donna Buss Dec 28, 2010

    why does it look like my gas gauge is full by 3 times

  • Donna Buss Dec 28, 2010

    Thank you for your help

  • Donna Buss Dec 28, 2010

    Thank you

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2 Answers

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  • Chevrolet Master
  • 75,797 Answers

Hello
This problem is caused by a gas gage sending unit problem, you must replace it, the sending unit is part of the fuel pump module assembly and located inside the gas tank, the tank must be removed from the truck to replace the part.

Posted on Dec 28, 2010

  • yadayada
    yadayada Dec 28, 2010



    Instructions To replace fuel Pump Module (contains gas gage sending unit)



    Things You'll Need:



    • Wrench

    • Floor jack

    • Jack stands

    • Screwdriver

    • Hex bolt head

    • Needle-nose pointer

    • Locking pliers


      Removal




    1. Remove the fuel pump's relay from within the engine compartement fuse and relay center, look to the box's diagram for the relay's location. Crank the engine for several seconds, look for it to stall and then disconnect the truck's negative battery cable.




    2. Open the gas cap door and unscrew the flange that surrounds the filler pipe; these screws will take a screwdriver with an inverted hex bolt head.




    3. Raise the truck's rear end and support it on jack stands. Unbolt and remove the fuel tank's shield with a wrench and then disconnect the ground ******** the filler pipe.




    4. Disconnect the EVAP canister lines at its quick connect fittings and then unbolt and remove the canister from its bracket using a wrench.




    5. Disconnect the lines and electrical connectors from the fuel pump module's flange on the tank. All these connectors should use quick-connect fittings that you press either by hand or with a small screwdriver's help.




    6. Raise a transmission jack under the fuel tank to boost it. Unbolt the support straps with your wrench, lower the jack and remove the tank.




    7. Press and release the locking tab on the fuel pump module's flange ring using a needle-nose pointer while grasping the ring with a large pair of locking pliers. Turn the ring counterclockwise using the pliers to loosen it.




    8. Grab hold of the pump module by the line fittings and lift the module out of the tank.


    9. Installation




    10. Lower the replacement fuel pump module down into the tank. You must make sure you don't damage the pump's float at the bottom, and then align the module so its line fittings point in the same direction as the old one.




    11. Press down on the module to seat its retaining ring and turn it clockwise to engage the locking tab.




    12. Place the fuel tank back on the jack and raise it back into position on the truck. Connect the straps with your wrench.




    13. Reconnect the fuel lines and electrical connectors to the fuel pump flange at their quick-connect fittings. Re-install the EVAP canister within its bracket and connect its lines.




    14. Connect the ground strap and shield back to the fuel tank and lower the Silverado off the jack stands.




    15. Reconnect the truck's battery cable and fuel pump fuse.



  • yadayada
    yadayada Dec 28, 2010

    This is caused by the gas gage sending unit malfunction (a common problem in your model). You have the information to fix the problem.

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  • Chevrolet Master
  • 5,370 Answers

First check and see if the plug on the sending unit is on all the way, if not chances are you might need a sending unit. Also it can be loose ground wire of fuel pump. Also drop the fuel tank and ohm out fuel level sensor and see if it's faulty.

-------------------Remove the fuel gauge out of the bottom on dash and check. Also you can get it scanned to confirm the fault. The procedure of scanning results is very simple. First, with a compatible scan tool, access the instrument cluster module. There is a function for gauge sweep test. This moves the gauges all the way up and all the way down. If a gauge does not respond, it is faulty. The instrument cluster is only serviceable as an assembly and must be programmed using a factory scan tool after installation. If the sweep test shows the fuel gauge moves all the way up and all the way down, you likely have a faulty sensor in the tank. Getting Ohm reading of the sensor at the connector is the next step. The sender should read a steady resistance value between 40 and 250 ohms, depending on the fuel level in the tank. These have also have had a high failure rate. They are available separate from the fuel pump assembly.----------

This will help.Thanks.Helpmech.

Posted on Dec 28, 2010

  • raj somaiya Dec 28, 2010

    You can rate the session.Thanks.Helpmech.

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