1999 Pontiac Montana Logo
Posted on Jul 10, 2009
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2003 pontiac montana running out of gas at half tank after fuel pump replacement

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Randy Fitz

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Randy Fitz
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The fuel pump/tank sending unit may not be assembled or installed correctly.

If the fuel pick up portion is not positioned properly, it will not reach the bottom of the tank.

If the sending unit is faulty, you will not know the correct volume of fuel in the tank(misreading).

Take it apart and check these items.

GIVHRR

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  • Posted on Jul 28, 2009
GIVHRR
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Very common to have a defective fuel level sender inside the tank on these vans.... should have been replace with the fuel pump module .. bring it back to whoever did the pump to have it checked

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Hello John.
The Montana/Venture vans have a problem with the fuel gauge sending units in the early 2000's.
The only cure is to drop the fuel tank, remove the sending unit and replace it.
The fuel gauge sending unit is available separately from the fuel pump.
Thank you for using FixYa.
KL
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