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Thread: Fuel Tank Size

  1. #1

    Default Fuel Tank Size

    Trying to order a new fuel pump for the Burb but I cannot determine the fuel tank size using the RPO codes.Any advice?

  2. #2


    LMC has a section in their catalog for tanks.
    look up your year and trim
    Gas was $1.83 when Obama took office.....

  3. #3


    Also if you have your owner's manual it should be in there.
    2002 Chevy Silverado & 1995 Ford Bronco

    02 Silverado: 50K miles, 20" Motto Rims, Flowmaster 50 Series
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  4. #4


    call the dealership with vin# and they should be able to tell you.
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
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  5. #5


    Thanks,none of the RPO codes match up with the tank sizes. The choices when ordering a fuel pump for a 91 v2500 are 31 gal. and 40 gal. I would think the default on a heavy duty rig would be the 40 gal but I want to be sure. Owners manual only mentions that there are two different sizes. Did confirm I had the 4L80E tranny. That made my day.

    - - - Updated - - -

    Used the measurements from LMC. 35x28x13. Its a 40 gal. tank.Thanks for your help.

  6. #6


    I suspect the 31 gal tank is "standard" and the 40 gal is an optional tank. If so, there should be an RPO code on the glove box sticker (if the 40 gal was installed at the factory). The RPO for a 40 gal tank is: NE2

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

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