petethepug
Michael
Finally found the info on the GMT 900 dual tank set up for a 2011 6.0L L96 1T truck. This is also the same info as the 3/4T Suburban, Whoa …. Lotta info
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You might contact TransferFlow and see what assistance they could offer you… other products might be available other than what’s listed on their website.Not too happy with the MPG/gas tank size in my 2013 Yukon XL. When it reads empty, I can only put in about 25g and it is a 31 gallon tank. Something is off.
Possible to swap in the bigger 39 gallon tank from the 2500-series into my 1500 Yukon Denali XL? What models carry the 39 gallon tank? what years of Silverado/Suburban/Yukon XL?
Can I assume the mount points are the same and can it work?
I also want to put in a newer fuel pump because this one has 200K on it and is original, to preempt failure.
My fuel sender is like yours, I can drive all day when it says empty. Typical fills are 25-26 gallons, most ever was just under 30.
The 2500s have a deeper frame, they run a 26 gallon tank up front and an 11 and change gallon tank above the spare tire. It's too big to put in our 2500s without removing the spare and crossmember, not to mention the complex computer programming to get everything working as it should.
Gasoline fuel tanks are considered part of the emissions system now and the aftermarket won't touch it with a ten foot pole because of the feds.
Some company made a round fuel tank that took the place of the spare but getting that fuel into the main tank was cumbersome.
The GMT400s had a 42 gallon tank behind the rear axle, their spare rode in the back of the truck.
On the highway my truck burns about 4-5 gallons per hour between 70-80 mph. That's over 7 hours at the slower speed and just shy of six hours at the faster speed. We routinely run about 450 miles on a tank using 25 gallons. Furthest I've run on 27 gallons was 515 miles. She can go further than I or my passengers can endure. That reality caused me to abandon my quest for more capacity. If I really need more capacity, I've got six 5 gallon Wavian Jerry cans that can go in the back and won't stink up the interior.
With VVT, your truck ought to be more fuel efficient than mine by a solid 1 mile per gallon.
I know people who used to bend the fuel level wire on the float to adjust how they read. I don't get more than 26 gallons unless I really run it down.Thanks for the definitive reply. Maybe I should leave it as is. All the viable solutions are not cost-effective, short of getting a 2500 series Suburban (which comes with the 6.0L versus 6.2L).
The remaining question is, how do I caliberate the gauge gauge to correctly read empty when it really is empty. I have never put more than 26 gallons in it, even when the gauge dips below the horizonal line and looks scary like it will stall any second now.
Do I need a different fuel pump? Or some other device along the way to the gauge?
Actually an interesting idea would be to install an aftermarket gas gauge, how hard / expensive would that be? The default one positively sucks. It's the size of the half-dollar and doesn't show any granularity.
Pumped aboard 28.3 gallons just now, Torque Pro app showed 92% full when driving. Usually shows in the 80s with a 25 gallon fill. That was 44 miles of additional driving since the light came on last evening. It's consistent and predictable.