Does anyone have a trail boss or at4? If so what are your thoughts? Would you recommend the 3.0 diesel or 5.3 V8? Also are they both worth the price?

You won't notice a ton of difference driving them

AT4 looks sharper to me. 5.3 is proven. Still unsure of these small diesels.

If I want to keep the truck 10 years do y'all think 5.3 or 6.2? How much better is 6.2?

Very interested in Yukon XL AT4. If anyone has any comments or contacts, it would be appreciated. TIA.

Why is 5.3 so bad? Sorry once again I don't know much.

23.5 is great! Up where I am the diesel is a lot cheaper than the 6.2

I have the 6.2 and love it. Gets way better mileage than I expected and the extra power is great. Regular highway driving I easily get 20+ mpg. Stop and go sucks the gas a little bit it's not that bad. Overall I'm at 18 mpg at 12,000 miles of probably 65% city driving. Gas costs a little more (premium), but the mileage is better than the 5.3 so it's basically a wash. You won't be disappointed with the 6.2.

I have the 6.2L in a 2020 Z71 and I really like it. Good power everywhere. I used to drive a 2008 5.3L for work and it always seemed gutless to me. Only seemed to make torque when you hooked a trailer up to it. Some of that I think was a tall second gear in the four speed.

21 AT4 with the 3.0 too. Love the engine so far. I round trip FW/Midland 2-3x month for work so the efficiency + range is appreciated.

Fuel tank much smaller than my old f-150 but the improved mileage almost compensates.

I have the 3.0 and love it. The 30mpg on the highway is ridiculous. And I found the 5.3 really underpowered

Change in circumstances mean I'm looking to potentially sell it though. Let me know if you're interested in a black 2021 with extremely low miles

I have 2021 AT4 as well with the Duramax. Mileage is good but once you get over 75 mph it drops to low 20's which is still good on a lifted truck I guess. I only hit 27+ going under 70. Avg for me is around 21-22 mpg. At 4500 miles now and about 1/3 def tank still left.

I got a 20' at4 with the 6.2.....love it. like others have said great power and decent mileage for what it is...

in terms of the truck it drives freaking great and smooth. You don't even realize that your going 90. I used to drive a gmc with the 5.3 and to me it always seemed sluggish when entering the freeway, or having to speed up. The 6.2 feel like a car to me when driving it. its awesome.

Personally when shopping for mine at the time I went with the at4 because I wanted cooled seats and leather, which the trail boss didnt have (it might now?).

Yeah send me a pm!

Yeah I'm gonna need to test drive some too. AT4 is definitely on the high end of my budget so would be very nice if I didn't have to pay a lot more for that upgraded 6.2

No stars

Email me at ***removed

AggieChemist said:

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Wouldn't that gif be more appropriate for the guys in lifted 3/4 ton diesel brodozers that don't haul anything heavier than their fat girlfriends?

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I wouldn't know. I drive a Toyota.

AggieChemist said:

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I have a 19 5.3 trail boss. I love it. I don't know what you guys are trying to do with your trucks but mine has all the power I need. I drive off road a lot, I pull a heavy Ranger bass boat, and I live in the freakin mountains. And when I put my foot in it on the interstate it will peg the governor quickly. Sure a 6.2 would be fun, but I don't need it.

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Yeah, I have a whole different perspective of underpowered than most people. Probably comes from driving old vehicles most of my life. I don't like trucks that drive like sports cars, possibly because I have seen how recklessly some people drive in them.

It's all about perspective. My 6.2L is the slowest daily driver I've had since college. I still recognize that it has excellent torque compared to most other 1/2 ton pick up trucks I've driven over the years. I like to have really good acceleration, that doesn't mean you have to haul ass in traffic or on curvy roads where big brakes and tight suspension are necessary.

I think you can equip an AT4 with much more Lux than the Trailboss, right?

Trailboss is Custom and LT from my understanding.

1agswitchin4lanes said:

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I think you can equip an AT4 with much more Lux than the Trailboss, right?

Trailboss is Custom and LT from my understanding.

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yes, at4 essentially a denali

John Francis Donaghy said:

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AggieChemist said:

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I have a 19 5.3 trail boss. I love it. I don't know what you guys are trying to do with your trucks but mine has all the power I need. I drive off road a lot, I pull a heavy Ranger bass boat, and I live in the freakin mountains. And when I put my foot in it on the interstate it will peg the governor quickly. Sure a 6.2 would be fun, but I don't need it.

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That's all well and good. But what about real truck stuff? Like peeling out from red light in the far left lane so you can cut all the way to right lane in front of everyone before slamming the brakes to make your turn, or hitting 100mph by the end of an on ramp to I-10 and cutting all the way to the far left lane to cruise?

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this is hilarious!!!

I have a '19 AT4 with the 6.2. Love the truck. The only issues I've had with it was the rear window leak (It was small and they resealed it and it's been good since) and then the leaf spring inserts had to be replaced. Lots of power and a very good ride and surprisingly decent fuel economy.