Larger Fuel Tank

FL335i · May 9, 2018

Does anyone know if there a company out there that makes a larger fuel tank replacement for the 2014+ 1500's? Everything I googled was for 2500 Diesels or 2500 Gas trucks. I wouldn't mind a 35 +/- fuel tank on my truck. I drive a lot for work and seems like I'm always filling up with 18-20 gallon fill ups. Lot of the ford guys at work have brand new '18 F150's and they have 34 or 37 gallon tanks. I rather replace my gas tank vs. drive a ford. But at some point, the ford trucks are offering the right options on the lots... i'm fighting the good fight. Need a larger fuel tank.

Edited May 9, 2018 by FL335i

ChristopherDB · May 9, 2018

Subscribed. I'd like to know as well. Filling up twice a week is not fun, and with hurricane season approaching it would be great to have a larger tank.

I'm assuming if a larger tank is possible there would need to be a way to reprogram the computer to be able to reestimate the miles to empty.

Edited May 9, 2018 by ChristopherDB

Imcrazy · May 9, 2018

I dunno if I would be willing to spend the $$ but, yeah it would sure be nice... I also drive a lot for work and personal and I fill up about 2x a week as well... Better than my wife's Malibu - that thing only has a 13 or 14 gallon tank!

ChristopherDB · May 9, 2018

My old car had a 18.5 gallon tank and I was getting about 25 mpg combined. Now I have a 26 gallon tank getting 15mpg combined. It's only a 72.5 mile difference between the two, which is one extra day of commute, but I feel like I'm filling up every 3 days instead of every 7. Maybe it's my heavy foot, maybe I have a leak

austingta · May 9, 2018

Gasoline is listed as "flammable" and diesel is listed as only "combustible". There is no application for an auxiliary gas tank, (like in the bed) for a gas anything. You can add a bigger integrated tank though. Been there and done all that.

Sierra706 · May 9, 2018

No one makes one for the 2014+ 1500s. You can get a titan aux tank that replaces your spare tire, or some sort of in bed tank. There just isn’t room due to the frame crossmembers.

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lowrider · May 10, 2018

You may want to check to see if the tank from a 1500 Long Bed will fit a regular bed truck.

Lou

Edited May 10, 2018 by lowrider

FL335i · May 12, 2018

I'm looking for a factory replacement fuel tank. The other option is do a fuel tank with a 12V pump in the bed. I don't fill-up any equipment at work, so I really don't need a transfer tank in the bed. I drive mainly city so I'm averaging about 14mpg. So it's about every 300 miles per fill-up. Every 4 days. If I'm towing or doing extra trips/errands it's about every 3 days. This is one more item the F150 has over the Silverado. dammit.

Edited May 12, 2018 by FL335i

Jon A · May 12, 2018

Does anybody have any actual pictures of the 34 gal tank from the long beds (GM part # 22772345 )? Standard bed trucks have gobs of space in front of the 26 gal tank if you relocate the EVAP canister. There's certainly room for a much bigger (longer) tank under these trucks. It wouldn't surprise me if the 34 gal tank fit with some modifications.

Does anybody have a picture of one so we can compare their shapes?

Rock1500 · May 13, 2018

Would it be possible to add a second tank? My friend had a truck that had 2 tanks and you would switch between using one or the other.

XxTheLoveClawxX · February 26, 2021

Sorry to revive this thread, but starting to dig in and do some research myself....

GM Part Number 22772345 on GM Parts Direct shows it fits 2014 - 2018 Silverado/Sierra 1500. It shows all trim options. I have a 2016 GMC Sierra SLT short box, the SLT doesn't come in a long bed. Sounds to me this fits all models.

Has anyone given it a shot and got the 34 gallon tank to fit?

AdioSS · March 17, 2021

On 2/25/2021 at 7:20 PM, XxTheLoveClawxX said:

Sorry to revive this thread, but starting to dig in and do some research myself....

GM Part Number 22772345 on GM Parts Direct shows it fits 2014 - 2018 Silverado/Sierra 1500. It shows all trim options. I have a 2016 GMC Sierra SLT short box, the SLT doesn't come in a long bed. Sounds to me this fits all models.

Has anyone given it a shot and got the 34 gallon tank to fit?

You mean the 8ft bed as the long bed, right? My 18 SLT Crew has the 6.5ft bed

Edited March 17, 2021 by AdioSS