Question about 1998 Oldsmobile Bravada

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1998 oldsmobile bravada

Fuel gauge quit but fuel pump still works?

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  • Talmadge Kemp Aug 24, 2008

    you say its the fuel sending unit! where is that and what do i do to fix the problem?

  • lhaley2 Sep 14, 2008

    I have the exact same issue. We have gone all summer with the sending unit out and going off the digital reading for fuel used to know how much gas is in it. Now our fuel pump went out so we have to fix it. We are going to replace both all at once. Does the solution provided work for pump as well. What is the best route to take?



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  • 85 Answers

Fuel gauge sending unit is at fault

Posted on Aug 24, 2008

  • Gary Queen
    Gary Queen Aug 24, 2008

    1. Properly drain the fuel tank, then disconnect the negative battery cable.

    2. If not done already, raise and support the rear of the truck safely using jackstands.

    3. If equipped on late-model vehicles, loosen and remove the tank plastic shield.

    4. Loosen the retaining clamp and disconnect the tank filler hose from the tank neck.
    fuel and vapor hoses or pump/sending unit wiring can be accessed at
    this time, they may be tagged and disconnected. If not, wait for the
    retaining straps to be loosened and lower the tank slightly for access.

    1. Tag and disconnect and accessible wiring or hoses from the top of the fuel tank.

    2. Have
      and assistant support the fuel tank, then remove the fuel
      tank-to-vehicle straps and, if equipped, the isolation strips. If no
      assistant is available, position a floor jack to support the tank while
      the straps are removed.

    3. Lower the tank slightly, then remove
      the sending unit or sending unit/pump wires, hoses and ground strap. Be
      sure to label all connections to ease installation.

    4. Carefully lower the fuel tank from the vehicle and store in a safe place.
    To install:

    1. Raise
      the tank partially into position in the vehicle. If you are working
      without an assistant, you may wish to loosely install one of the
      retaining straps and use a floor jack to support the tank at an angle
      so there is access to the sending unit or sending unit/pump assembly
      (as applicable).

    2. Connect the fuel/vapor hoses and wiring to the top of the fuel tank, as tagged during removal.

    3. Carefully
      raise the fuel tank so it is fully into position and loosely secure the
      retaining straps. Make sure the wires and hoses are not pinched or
      damaged when raising the tank. Also, be sure that the isolation strips
      (if used) are positioned between the retaining straps and the fuel tank.

    4. It
      may be easier to connect the fuel filler hose to the tank neck at this
      time. If desired, connect the hose and secure the clamp.

    5. Tighten the fuel tank retaining strap fasteners to specification. Tighten the strap nuts to 33 ft. lbs. (45 Nm).

    6. If not done earlier, connect the tank filler hose to the tank neck and secure using the clamp.

    7. If equipped, install and secure the tank plastic shield.

    8. Remove the jackstands and carefully lower the rear of the truck.

    9. Refill the fuel tank and install the filler cap, then check for leaks.

    10. Connect the negative battery cable.



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