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Larger after market tanks for Silverado 1500

Wintersun
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Wintersun Enthusiast

Wintersun

Posted
Posted

I found that Titan sells a 36 gallon tank for the Canyon and Colorado trucks but not for the Silverado trucks. Has anyone found an aftermarket gas tank for the Silverado 1500 to increase the puny factory fuel tank?

Penguin VII Enthusiast

Penguin VII

Posted
Posted

I haven't seen any larger replacement tanks for the 1500 for gas engines. The reason you see it for the midsize trucks is that they offer a diesel with the ZR2 (and maybe others?). Has something to do with flash point of diesel being higher and fumes being lower if I understand correctly. I tell you though, if there was a way to add a second tank to make my third gen more than the 20-something gal now I'd do it. I wanted a diesel 2500 to begin with and every time I see that you can upgrade to a 60 gal tank with the extended range of the diesel I get jealous.

  • 4 years later...
Duramaxsky Enthusiast

Duramaxsky

Posted
Posted

The reason they don't offer tanks for gas is the tank is part of the emissions systems on gas. They offer a bigger tank for a 2020 1500 diesel. If you look at a parts web site the gas and diesel use the same fuel tank. When my warranty is up I am going to install a diesel tank on my 6.2 gasser. A Titan diesel tank. It should work since the stock tanks are the same. 

 

4banger Enthusiast

4banger

Posted
Posted (edited)

Had local aluminum shop fab up an aluminum tank to ride in my box much like a large yeti cooler. It's sort of like a (57 gallon) 215 liter gas can with big handles on either end and can cable lock to the bed tie downs as well as motorbike tie down to bed tie downs. Use a small electric pump to fill up when I'm in the bush for a week remote, no longer have to carry multiple gas cans or come out for fuel. I future proofed it by making sure it would fit in between wheel wells and under tonneau covers for future trucks. It's about 400 lbs full. At least if I need the box space I can always use up some of the fuel and couple guys can get it out. Empty it's about 50 lbs so easy to maneuver solo. I run a roll up tonneau, you'd never know I had a tank back there.

 

I picked up one of these https://www.terapump.net/product-p/TREP01-T.htm and one of these to house it https://www.amazon.ca/Plano-1127-00-Compact-Arrow-Case/dp/B007TOHGWA/ref=sr_1_11?gclid=CjwKCAiAv9ucBhBXEiwA6N8nYAFjtRLeZWvFzVPECF29MSNAKg-XqmHc1Sh5UAVkDk8RCu-IRBuOVxoCMTMQAvD_BwE&hvadid=231033527663&hvdev=c&hvlocphy=9001335&hvnetw=g&hvqmt=e&hvrand=8319602227102894030&hvtargid=kwd-308446393605&hydadcr=23345_10308608&keywords=arrow+case&qid=1670879406&sr=8-11

 

The arrow case has an insert broadhead case that holds 4 d-cell batteries. I just keep that in cab and only put batteries in the pump when about to use it. Also, picked up a back up plan, https://www.amazon.ca/Shaker-Siphon-Transfer-Priming-Gasoline/dp/B07WBWTB7T/ref=sr_1_1_sspa?crid=2N5E95IVOWLC2&keywords=syphon+hose&qid=1670879518&sprefix=syphon+hose%2Caps%2C211&sr=8-1-spons&psc=1&smid=A3D4WU28DYXF1O&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyVldBOEhRVVpBQTlBJmVuY3J5cHRlZElkPUEwNjA0Njk2MjNTM0FRNFlFWjhaSiZlbmNyeXB0ZWRBZElkPUEwMjUyNzg4Mk9RQ0VSTlhGT1JFSCZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

 

You can actually syphon with the battery pump also and the nozzle lets you stop it when full. Or any ole small diameter tube will work. The electric pump doesn't need a funnel to fill, it goes far enough in to bypass the flapper. 

 

I tell ya, I really dig that multi-pro tailgate, just walk right up into the box for whatever. Drag deer up in there, get the fuel tank ready for a top up etc. 

 

I had welder put a 1.5" lip all around the top of mine to catch any spills etc. but also chain to lock through filler cap so you need to work for it and bring tools to get at my gas, as well as it's cable locked to box on both sides through the large welded aluminum handles. I have the equivalent of about 9-10 5 gallon gas cans in one. Well baffled, keep it full for hardly any fumes and or rocking at stops. You wouldn't know driving my truck. Half full I can feel it at stops but full within a couple inches of top I feel nothing. I wish I had built this many trucks ago lol. 

IMG_1571.jpg

 

Why waste your time and money for a couple gas cans extra fuel? Then you sell it or trade it in and gotta do it again? All you'll see in our part of the world are slip tanks in the box, the juice isn't worth the squeeze. So I carry with full tank and full slip tank 306 litres(80 gallons). Behaved on the highway that gives me theoretical range of 2550 kms(1585 miles). Behaved towing 1975 kms(1227 miles). With gas 2.7. I did the math on the Colorado diesel with a 55 gallon slip and it was amazing, you can gravity feed with diesel, use transfer tanks etc. With gas I just made a giant gas can. Still plenty of room to stack deer and gear in a short box. Doesn't matter where I end up for work or play, when they turn off the lights/net...I'm gettin back to my kids if they aren't with me, or getting home if they are with me. 😉

 

Yeti 105, Yamaha generator, and a deer about to go into that yeti 105 which will fit several deer. 😉 

IMG_0628.jpg

IMG_0629.jpg

Edited by 4banger
newdude Senior Enthusiast

newdude

Posted
Posted (edited)
15 hours ago, Duramaxsky said:

The reason they don't offer tanks for gas is the tank is part of the emissions systems on gas. They offer a bigger tank for a 2020 1500 diesel. If you look at a parts web site the gas and diesel use the same fuel tank. When my warranty is up I am going to install a diesel tank on my 6.2 gasser. A Titan diesel tank. It should work since the stock tanks are the same. 

 

 

 

No they do not.  Both the gas and diesel tank p/ns are not the same.  At all.  

 

Titan has tanks coming for 20-23 Duramax 1500s and they explicitly state "for diesel fuel only"

 

2019-2022 GM 1500 Crew Cab, Short & Standard Bed Duramax Diesel Fuel Tank (7010519) (titanfueltanks.com)

Edited by newdude
  • Thanks 1
Bikerjon Enthusiast

Bikerjon

Posted
Posted

Good to know newdude. People have been wanting to do this mod since the T1s came out with the 24 gal. tank.

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

If I had enough money and time, I'd totally try to make the larger diesel tank work.

 

If the stock fuel pump bucket fit the tank and sealed up fine, it's really only a matter of getting the EVAP lines to attach to the fuel tank.

Duramaxsky Enthusiast

Duramaxsky

Posted
Posted
14 hours ago, newdude said:

 

 

No they do not.  Both the gas and diesel tank p/ns are not the same.  At all.  

 

Titan has tanks coming for 20-23 Duramax 1500s and they explicitly state "for diesel fuel only"

 

2019-2022 GM 1500 Crew Cab, Short & Standard Bed Duramax Diesel Fuel Tank (7010519) (titanfueltanks.com)

So the GM online parts sites are wrong? They show the same part number. The difference is in the pickup part. The tank itself is the same.

Duramaxsky Enthusiast

Duramaxsky

Posted
Posted

https://www.gmpartsdirect.com/oem-parts/gm-fuel-tank-replaced-by-part-number-85569366-85170647?c=Zz1mdWVsLXN5c3RlbSZzPWZ1ZWwtc3lzdGVtLWNvbXBvbmVudHMmbD0xNCZuPUFzc2VtYmxpZXMgUGFnZSZhPWNoZXZyb2xldCZvPXNpbHZlcmFkby0xNTAwJnk9MjAyMCZ0PWx0LXRyYWlsLWJvc3MmZT02LTJsLXY4LWdhcw%3D%3D

 

 

Go down to fitment and you will see they list all the engines. 

newdude Senior Enthusiast

newdude

Posted
Posted
1 hour ago, Duramaxsky said:

So the GM online parts sites are wrong? They show the same part number. The difference is in the pickup part. The tank itself is the same.

 

 

Correct.  They have it listed wrong.  The tanks come bare, just the tank.  No fuel pump, etc.  

 

There are two gas fuel tanks, 85170646 (U.S./Canada built trucks) and 85170647 (Mexico built trucks) for all cabs/bed length.  

 

There are then two diesel fuel tanks, 85117714 (U.S. built trucks) and 85117716 (Mexico built trucks) for all cabs/bed length the Duramax is available in.  

 

All the tanks have the fuel RPO code on them as well.  Gas is "FJW", diesels are "FHX."

 

Sounds pretty specific to me 🤷‍♂️

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