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The point is, all the major truck players, except GM, offer larger tanks.

2021 Suburban fuel tank 28 gallon vs 2020 was 31 gal 2021 Tahoe fuel tank 24 gallon vs 2020 was 26 gal

A gallon of gas weighs 6 pounds and yeah the only advantage of a smaller tank is to chase government numbers and look better on paper with payload capacities as these tests must be done with a full tank. There are NO real-world advantages of a smaller tank. There are lots of real-world advantages with a larger tank (longer range, less frequent stops, saving time, saving money, reducing hassle, etc) and NO real-world disadvantages. Also your truck doesn't need to be on empty to take a rest stop. Not sure why people on here need their tank size to be equivalent to their bladder size, that's ridiculous. Stop when you want, you don't need to be on empty to stop. Or if that's important to you, only fill the tank half full. If you are worried about extra weight only fill up a few gallons at a time, that's even better LOL. Ford, Ram and even Toyota offer larger tanks, time for GM to get it together.

GM decreased their fuel tank size by 2 gallons and now have one of the smallest fuel tanks and the only major truck brand to not offer an optional larger tank size. The only advantage of a smaller fuel tank is to do better on a government test and show better numbers on paper. GM really needs to step up and have a larger tank option!

Yes that is accurate. Both tanks will be getting smaller. 2021 Suburban fuel tank 28 gallon vs 2020 was 31 gal 2021 Tahoe fuel tank 24 gallon vs 2020 was 26 gal

Both Ford and Ram offer optional larger fuel tanks. They are getting the best of both, payload based on smaller tank, optional larger tank if you want/need it. I guess my question is why does GM not offer an optional larger fuel tank?

I'm pretty sure Ram 1500 has an optional 33 gallon tank

Trump rolls back fuel economy standards and emissions standards. https://www.detroitnews.com/story/business/autos/2020/03/31/trump-rolls-back-obama-mpg-rules/5093643002/ There ya go, can cut out the beuqacratic bs and engineer the best truck, no excuses

So there are definitely advantages of a larger fuel tank, especially if you are really using your truck. There are not any advantages of a smaller tank, except for a small amount of weight savings, as far as I can tell. I can understand that not everyone needs the benefits that a larger fuel tank provides but I guess my question is why does GM not offer the option? Ford and Ram offer different sized fuel tanks.

A larger tank is better. If you want to stop and walk around, you can at any point, you don't have to be out of fuel to do so. If you tow a large trailer, fuel range shrinks substantially.

Is it the weight of the extra material needed to make the tank 2 gallons bigger or the weight of the fuel or both? I would think the extra plastic for a larger tank would be practically nothing. The weight of the fuel would be12 lbs I guess. I am assuming weight is such an issue for EPA MPG?? In the real world I wouldn't think anyone is concerned with a few pounds.

So previous short box GM trucks had 26 gallon tanks, anyone know why for the new model they shrunk by 2 gallons to 24? Yeah GM should at least offer the option of a larger tank. I'm all for giving customers the choice.

There are hundreds and hundreds of new F150s with 3.73 gearing in all trim level. I just did a search on cars.com. I was looking at the 5.0 V8. Many of the 3.73 were advertised $12k-$14K off sticker. If you really want to find a specific truck that is sitting on a lot somewhere call Ford they will help you. Any manufacture will. I have called GM in the past and they gave me a list of all the truck in the country with the specific specs I wanted. Its pretty easy to do when rebates are high and discounts are deep at the end of a model year. You might have to travel to pick it up but thats part of the fun. Hope it helps!