pyoung62

So are you saying the range shown in the MyGMC app and the dash will be different? Also, what scanner? An OBD scanner? I can’t imagine keeping that plugged in while driving around. i guess my main question was on the capacity. When it jumped from 43 to LOW and then I put in 23.2 gallons 4 miles later, did I really have less than a gallon left? Or is there an additional reserve capacity. If I ran it dry or completely drained the tank and refilled it, would it take exactly 24 gallons and no more?

So I’ve seen this happen a couple times now. Fuel light comes on, shows 50-55 miles to go. The first time, I was on an interstate, so started looking for an exit. Went about 5 miles, then it went to 43 miles, went another mile or two and it then said LOW. Never read anything else. I found a station about 4 miles later and filled up. It took 23.2 gallons. In a 24 gallon tank, to go from 43 miles to putting in over 23 gallons in less than 10 miles was kinda’ shocking. Today, I had roughly the same experience. Went from 40 miles to go to LOW, got gas about 5 miles later and put in about 22.5 gallons. Anyone else see the same? Is there a hidden reserve over the 24 gallon tank capacity?

Got it. I appreciate the warnings, guys. Does anyone know if they fit? Lots of posts up here about tire swaps and lifts/aftermarket wheels. I just want to know what works on a stock setup.

I’m not too concerned about that. I’ve usually gone up a size or two in my trucks since I think most mfgs undersize stock tires. I do the math and know what I’m getting into. But it’s a moot point if they don’t fit. I can see that the upper control arm fit is pretty tight. But I’m not going the spacer route.

Searched and haven’t found the answer. I have a 2026 Denali with the 22” wheels with 275/50. I’d like to fill out the wheel wells more and lose the crappy Bridgestones. Looking at the Michelin LTX M/S in 295/55. Adds about 0.8” in width and height. Has anyone fit these with the stock wheels, no lift/no spacers, and with no rubs or mods? I could do without any additional width…just looking for height. But I don’t need an A/T tire, and I can’t find a 285/50 or 285/55 in anything other than an A/T. Nobody makes a 275/55, and a 285/60 is only available in an E tire and I’m not mounting a 60# tire. A 275/60 is a 35” tire and I think that would be too tall to not cause a problem.