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Old 03-21-2012, 06:40 PM   #1
MIKE FROM SM
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Default Duramax Fuel Tank

I have an 08 GMC 2500 4dr short bed. I has about a 22 gallon tank and when towing, that makes for a lot of stops. What have you guys done to increase capacity and what are the pros and cons.
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Old 03-21-2012, 07:00 PM   #2
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Default Re: Duramax Fuel Tank

http://www.titanfueltanks.com/
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Old 03-21-2012, 07:00 PM   #3
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Default Re: Duramax Fuel Tank

Quote:
Originally Posted by MIKE FROM SM View Post
I have an 08 GMC 2500 4dr short bed. I has about a 22 gallon tank and when towing, that makes for a lot of stops. What have you guys done to increase capacity and what are the pros and cons.
Titan makes a nice 52 gallon tank. It is not cheap but it a better option than an in bed tank IMHO.
http://www.summitracing.com/parts/TFA-7010201/

Cons
1 Its not cheap

2 $200 + to fill it.
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This is why you should only build generic junk for the masses because really thats all they can handle! The moment they feel insecure straight to the key board they go! Being creative and trying to push stuff is only worth doing for yourself.
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Old 03-21-2012, 08:57 PM   #4
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Default Re: Duramax Fuel Tank

The little ass tank is the one thing I have bitched about my 2005 since I bought it. Pulling a trailer you gotta stop every 200 -250 miles and get fuel.
I put a 60 gallon tank (with the small tool box on the top) in the bed. I put a cut off valve on the bottom and tapped the line into the vent tube. When I hit the road I just open the valve and it fills the tank. If you drive for a few hours the fuel guage goes to empty and the low fuel light comes on. I have no idea why. If you cut the tank valve off once you drive a little ways the guage goes back up. Or if you just drive till the big tank emptys it will start working again.

It sure is nice to have almost 90 gallons when I hit the road. I've driven several times more than 8hrs without ever stopping.
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Old 03-22-2012, 11:07 AM   #5
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Default Re: Duramax Fuel Tank

Is there a fuel gauge problem with the titan tank too?
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Old 03-22-2012, 06:15 PM   #6
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Default Re: Duramax Fuel Tank

The fuel gauge can be rescaled to be accuate using efi live.
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Old 03-22-2012, 06:19 PM   #7
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Default Re: Duramax Fuel Tank

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The fuel gauge can be rescaled to be accuate using efi live.
this I did not know, but I'm happy to see you can. I was considering this but didn't want to have to keep an eye on mileage all the time to know when the tank was empy
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Old 03-22-2012, 06:41 PM   #8
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Default Re: Duramax Fuel Tank

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The fuel gauge can be rescaled to be accuate using efi live.
The website says the gauge remains accurate, the trip computer can be reprogrammed with EFI live.
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Old 03-22-2012, 07:23 PM   #9
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Default Re: Duramax Fuel Tank

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Originally Posted by Firetruck1 View Post
The website says the gauge remains accurate, the trip computer can be reprogrammed with EFI live.
Website wants to sell tanks...to people that don't want to buy anything extra.
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Old 03-22-2012, 08:16 PM   #10
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Default Re: Duramax Fuel Tank

Quote:
Originally Posted by IdahoRob View Post
Website wants to sell tanks...to people that don't want to buy anything extra.
X2

But it is not like the stock tank scaling is that great.
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Quote:
Originally Posted by unlimited View Post
This is why you should only build generic junk for the masses because really thats all they can handle! The moment they feel insecure straight to the key board they go! Being creative and trying to push stuff is only worth doing for yourself.
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Old 03-22-2012, 10:53 PM   #11
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Default Re: Duramax Fuel Tank

I bought a 110 gallon aluminum transfer tank from Tractor Supply and hooked a couple turnbuckles to the front bed tie downs. Put an Apollo ball valve on it and ran a dash six line to the OEM filler neck. 135 gallons on board now, 1,000+ mile towing range and buy your fuel when you want. Shaves hours off long trips.
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Old 03-24-2012, 09:27 PM   #12
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Default Re: Duramax Fuel Tank

2007 Duramax here. This is the one I got. Has worked flawless for 3 years. It is automatic. I dont have the fuel level gauge but after you drive with it for awhile you know when it's getting close to being empty. Supposed to be 50 state legal as well. I got the powder coated one since my truck was black.

http://transferflow.com/toolbox_tanks_0.html
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Old 04-07-2012, 08:30 AM   #13
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Default Re: Duramax Fuel Tank

I don't know about y'all, but I'll stop and get the fuel instead of spending the 1200 bucks on a larger tank. It also makes it easier to shut the kids up that are crying hahaha

hp tuners can rescale the fuel gauge as well.
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Old 04-07-2012, 03:59 PM   #14
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Default Re: Duramax Fuel Tank

I used to work with the GM 4500/5500 trucks with the Duramax, they had a calibration stratagy that monitored fuel usuage. And if the computerd did not see a certain amount of fuel drop/useage with in a set amount of time/miles, it assumed there was a fuel level problem and would force the guage to go to empty. After cycling the key, the guage would return to working. This was a big issue when aftermarket tanks where added and plumbed into the system. I would not be surprised if the 2500/3500 did the same. Its been several years since I delt with this, so I have no idea if they have made any changes.
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Old 04-07-2012, 04:20 PM   #15
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Default Re: Duramax Fuel Tank

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Originally Posted by strlegal View Post
I used to work with the GM 4500/5500 trucks with the Duramax, they had a calibration stratagy that monitored fuel usuage. And if the computerd did not see a certain amount of fuel drop/useage with in a set amount of time/miles, it assumed there was a fuel level problem and would force the guage to go to empty. After cycling the key, the guage would return to working. This was a big issue when aftermarket tanks where added and plumbed into the system. I would not be surprised if the 2500/3500 did the same. Its been several years since I delt with this, so I have no idea if they have made any changes.

I'd be willing to bet that's the reason, but my fuel guage will never come back up unless I turn the valve off and burn about 5 or so gallons out or the big tank runs empty and burns off 5 or so gallons then it will pop back up to full. Even leaving the truck parked all night it still stays on E and the low fuel light stays on. It will do it for weeks if I don't burn some fuel off.

This is my tank. I bought it used for $350. Notice the valve on the left side. It does have a fuel guage inside the lid.
You can see the tool box on the top ( about 6 inches) and the rest is 60 gal. fuel tank.

I don't think I could own a truck without an extra tank in it anymore.
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