2022 GMC Sierra AT4 vs. 2022 Chevy Silverado Trail Boss: Mechanical Differences27
The 2022 GMC Sierra AT4 and 2022 Chevy Silverado Trail Boss are similar in a number of ways – both are GM full-size pickups equipped for off-roading adventures, with the GM T1 body-on-frame platform under the skin. However, while these two vehicles do share quite a bit, there are numerous mechanical differences worth pointing out as well. Now, GM Authority is looking into the specific mechanical differences between the 2022 GMC Sierra AT4 and 2022 Chevy Silverado Trail Boss.
From the off, we need to mention that there are two trim levels for the 2022 Chevy Silverado Trail Boss, including the Silverado Custom Trail Boss and the Silverado LT Trail Boss, with certain features offered on one of the trim levels, but not the other.
With that covered, let’s take a closer look at the mechanical differences between the 2022 GMC Sierra AT4 and 2022 Chevy Silverado Trail Boss, starting with the drivetrain. Under the hood, the 2022 GMC Sierra AT4 is equipped as standard with the 3.0L I6 LM2 turbodiesel Duramax, which is rated at 277 horsepower and 460 pound-feet of torque. By contrast, the Silverado Custom Trail Boss and Silverado LT Trail Boss are both equipped as standard with the turbocharged 2.7L I4 L3B gasoline engine, rated at 310 horsepower and 420 pound-feet of torque.
The 3.0L I6 LM2 is optional in the Silverado Trail Boss models, while the L3B is not offered for the GMC Sierra AT4. The other two engines to mention include the naturally aspirated 5.3L V8 L84, rated at 355 horsepower and 383 pound-feet of torque, and offered as optional on the Silverado Trail Boss models, but not the GMC Sierra AT4. Finally, there’s the naturally aspirated 6.2L V8 L87 gasoline engine, rated at 420 horsepower and 460 pound-feet of torque, and offered as an optional upgrade for both GMC Sierra AT4 and Chevy Silverado LT Trail Boss models.
For a more complete breakdown of the mechanical differences between the 2022 GMC Sierra AT4 and 2022 Chevy Silverado Trail Boss, dive into the table below:
|RPO Code||Sierra AT4||Silverado Custom Trail Boss||Silverado LT Trail Boss|
|Turbocharged 2.7L I-4 gasoline engine||L3B||-||S||S|
|EcoTec3 5.3L V8 gasoline engine||L84||-||A||A|
|Duramax 3.0L I-6 turbo-diesel engine||LM2||S||A||A|
|EcoTec3 6.2L V8 gasoline engine||L87||A||-||A|
|8-speed automatic transmission||MQE||-||S||S|
|10-speed automatic transmission||MQB||-||A||-|
|10-speed automatic transmission||MQC||S||-||A|
|10-speed automatic transmission||MHS||A||-||A|
|10-speed automatic transmission||MHT||-||A||-|
|Autotrac two-speed electronic transfer case||NQH||S||S||S|
|Trailering Package with 7-pin and 4-pin connectors||Z82||S||S||S|
|Dual exhaust with chrome tips||N10||S||A||A|
|Hitch Guidance with Hitch View||PZ8||S||-||A|
|Hill Descent Control||JHD||S||S||S|
|Off-Road Suspension with 2-inch factory installed lift and monotube shocks||Z7X||S||S||S|
|Integrated trailer brake controller||JL1||S||A||A|
|In-vehicle Trailering App||UET||S||-||A|
|Trailer Tire Pressure Monitoring Sensors||PTT||A||-||A|
|Heavy-duty air filter||K47||S||S||S|
|External engine oil cooler||KC4||A||A||A|
|Auxiliary external transmission oil cooler||KNP||A||A||A|
|Auto-locking rear differential||G80||S||S||S|
|Engine block heater||K05||S||A||A|
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Why aren’t they comparing the Sierra AT4X to it’s actual variant the Silverado ZR2?
Ugly grill, replace ASAP!
Both are available in crew cab only, so… zero interest.
Whenever I see a double cab Trailboss (not often) I think, what a bada## looking truck. Whenever I see a crew cab Trailboss (everywhere) I think, it looks like a lifted bloated whale.
I agree with John. It would be nice to be able to buy the truck you want instead of the truck they tell you is your only option. The double cab trail boss and the lt trail boss should be available for consumers, it’s our money we’re spending and it should be spent on the vehicle you want. The trail boss trucks are great trucks and by offering them in the double cab option they might finally be able to out sell FORD in truck sales, where do potential buyers go when they want a double cab truck that GM wont make, FORD.
Why do they make all their vehicles weird looking?
None of these models can come equipped with max trailering package with larger rear end and gearing.
Because you don’t get soft offroad suspension and a lift and tow heavy…
Low gearing sure, but not max tow with heavy leaf
Wy are the new trucks fuel economy much worse than the 2018 mdl i had with max trailering and 6.2 . Also the truck feels week compared to it . Is it all in the gear ratio . Max trailering is not available since 2018 (WHY) !!
It’s the configuration. Right now they are selling lots of lifted trucks with knobby tires from the factory and a turbo 4. If you get a 2018 and give it a 2” lift and duratracs, I bet you the trail boss would get better fuel economy. The base V6 was always more efficient than the turbo 4 cause turbos suck gas.
Now identically equipped, such as a crew cab LT z71 2018 vs a 2021, they have the same hwy fuel economy, and the newer ones actually have slightly better city economy.
Also there is a new XFE fuel economy package that gets even greater fuel economy
Man that grill is ugly!
The Silverado Grill Designer used to design outdoor grills for steaks and stuff.
Love the look of the truck and grill. Put these trucks side by side to a Ford and Ram and they are the better looking truck. I own a 2020 Silverado trail boss LT and it looks great and i have had many compliments on the look of the tuck. There are different grills per model type you purchase. It is obvious there are people who respond to these forum’s that don’t own a truck, will never own a truck and could be a possible Ford or Ram truck lover and they come on this site to be negative when you don’t have a clue.
The LT and higher trim front facia and grill look great, it’s the work truck and custom grill that looks bad!
I agree 💯 they are much better looking Ford ram Nissian or Toyota. Chevrolet and GMC are better looking.
GMC has the better design team @ GM. ALL Silverados look low buck.
J.C Craig, that is your opinion the look. Many people who purchase disagree, look the at the total monthly and yearly sale numbers
J.C Craig, do you own a new GMC or plan on purchasing one?
We just purchased a 2021 GMC AT4 it’s a nice looking truck my husband has always owned GMC trucks. To make a long story short we purchased it 6 months ago and it’s now in the dealership shop where we purchased it.
1- came to find out they need to replace all lifters. (Remember 6 months old).
2-No parts waiting (truck has been outside the service department parked outside for about a month now.
Will the 2022 Custom Trail Boss NOT come with a 6.2L Ecotech Engine with 10 speed automatic Transmission as an option? The 2022 refreshed models have that option according to one of your articles I read. If NOT, why would GM do such a stupid thing as take away a previous model year option like THAT? Isn’t the objective here to sell trucks?
To read these post it is just crazy.
Some want off road but they want max towing. Others are upset that the GMC and Chevy appeal to different groups.
To have a decent off road truck compromised off road trail runs. That is why you don’t see many HD trucks off road and if you do they are stuck.
GMC and Chevy are styles for two different groups. If you like one better than the other that means GM did their job creating two totally different looks on the same truck.
We had for years people complaining that the GMC and Chevy were too much alike. Now some complain they are different.
Like life many things are a compromise and you just need to stop complaining and adapt.
Well put c8r
In the old days GMC had differences with the Chevy in other ways such as standard 4 bolt mains,HD transmission and HD differentials standard and it was optional with Chevy.GMC even had thicker carpet in the interior.Now they are basically the same except for grille and interior features.I like both examples,I own a 2019 Silverado Custom Trail Boss Z71 and am exteremely impressed with it.It’s my 14th Chevy truck and they have never made me walk.Lifelong Chevrolet buyer…my yard currently has a 1984 K5 Blazer restored,1996 C1500 stepside,2014 Impala LT2,2017 Camaro SS and a 2019 Silverado Custom Trail Boss,I drive all of them weekly and thank you Chevrolet for making great products.
Just another lifted pavement pounding princess! UGH! Please make a sport truck GM. I’m tired of seeing jacked-up trucks
I was planning on buying a new custom trail boss this year, you can forget it eliminating the double cab, BIG MISTAKE !!!!!!!!
BRING BACK THE DOUBLE CAB!!!!!!!!!!!!!!!!!