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.
