Is the GMC Sierra AT4 Diesel Worth an Extra $10K Over a Chevy Silverado Trail Boss? Let's Compare!

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What are all the differences between a $55,000 Chevy Silverado 1500 Trail Boss and a $65,000 2021 GMC Sierra 1500 AT4 Diesel? Is the Sierra worth the extra $10K? Let's compare and find out!
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#chevySilverado #gmcSierra #price

[@brandondenucci]

I’ve had a 5.3 AT4 for a little over a year and hands down the best truck I’ve ever owned. The interiors are more different than Tommy noted. The GMC has nicer finishing on the dash, accent stitching and inlays, and “AT4” stitched into the head rest. It also comes with heated (but not cooled) rear seats. My best friend has a Silverado RST that he put a Trailboss lift on and, although it’s definitely a nice truck, the finish on the AT4 is definitely noticeable. Also, as goofy as it seems at first, the multipro tailgate really comes in handy! Just make sure you don’t open the inner tailgate (the smaller upper portion) with a trailer hitch in (crunch!). A comparably equipped AT4 will only run you about $1500 to 2500 more, but is definitely worth it! I’D GO AT4 ALL DAY!

[@domin8ss]

When I was looking at the AT4 and Trail Boss LT, both as equally equipped as possible including the 6.2, the GMC was about $6,000 more. I couldn't justify that much difference in expense for the same truck, so I went with the Chevy. For about $1,000 I was able to utilize GM parts and get what the Chevy was missing that I really wanted. Factory navigation was $650 through MVi and $200-$250 for wireless cell phone charging. As for the different color stitching, seats, and headrest embroidery; is just a pig with lipstick. The only thing I'm not doing that would've been nice is the carbon pro package, but that's only available in white and I wanted blue, and the multipro tailgate.

[@thegreenerthemeaner]

@@domin8ss Part of the price difference here is the Carbon Pro, Multi function tailgate with the Kicker Sound, all fairly pricey. Now consider that it comes standard with rear inner wheel well liners, an unlock button on each door, and some other little details, it isn't apples to apples comparison. I bought an Elevation with the X31 to get a low range in the Tcase. I don't want a Carbon Pro or Swiss Army tailgate. It was tough to find what I was wanting. I wanted a 10 way seat on the passenger side, puddle lights, 6.2. Had to go to the AT4 for the seat. I'm fine with it, but I may trade when it turns 2.

[@jamieryan9101]

I don't want ANY BUTTONS on my TAILGATE! I want a HANDLE!

[@Shortydude847]

LOUD NOISES

[@ColJonSquall1]

you'd have to ask for it, I know they exist on them. I've seen them on the 2019 Silverado and Sierra, when the new body was introduced.

[@jamesbarbrey5094]

the custom has the handle non dampened tailgate

[@redoutlaw7valo7]

Lol

[@CristianoRonaldo-yc7tu]

I don’t really know much about cars but I just really like the exterior of the Silverado much better idk I feel it more sporty but the Sierra is also looking great and with more features

[@4liter]

I cross shopped both of these and went with the AT4. Hands-down has better tech options with the trailer and cameras, adaptive cruise control, wireless charger, heated rear seats, diesel, etc.

[@chuckmuellerleile8729]

Still don't understand the love affair with diesels....unless you tow A LOT. It costs way more to maintain, much higher buy in, def fluid, etc. Just my view.

[@jerrygundrum1]

It is a macho thing for most. I use my gas canyon for towing boats and camper more than my neighbor the the big bad Cummins

[@carloscampos3684]

Yeah and with the 3.0 you don't get more capability than the 5.3 or 6.2

[@dtlusk24]

Diesel are fun and so much power is just a game changer and mpg is much better. Def fluid is a joke when people talk about cost. You toss in a 3 gallon container every 5 to 7k miles. For 15 bucks not that big of a factor. My hd dursmsx I can get 27 mpg and 750 miles a tank. Can't do that in a gasser.

[@fewworddotrick]

@@dtlusk24 yep everyone talks about the cost of def. It amounts to less than a penny per mile cost. I spend $26 for 6k miles of driving. There are tons of discount programs with diesel fuel because of the trucking industry, so I can get diesel for the same price and sometimes cheaper than 87. Combine that with the mileage savings and return on investment of a diesel at trade in, and you save several thousands of dollars all while having more power and better driveability. The only time it is not worth it is to own a diesel plagued with constant problems. But I wouldn't own one non deleted past the warranty date. Too much liability.

[@michaelstringer1840]

Your not wrong with the maintenance but I'm a mechanic and def is not to bad. I've owned two diesels. The first was a vw and now I own a ram 1500. The main reason I bought them was fuel economy. With the ram and how I drive it I can get around 950ish constantly on a full tank. The highest I got was was 980 something and that was with the best diesel fuel I can find.

[@scott99a]

I’ve got the AT4 3.0 and hands down best powertrain package I’ve had in a GM vehicle.

[@drunkpolack7612]

Can you delete them yet?

[@skimask5049]

that motor is trash.... lol

[@dcasandman]

How’s it tow? What the max tow rating on it? I’d like to go this route but need to pull 8000lbs.

[@JohnDoe-nz6bk]

That's not saying a lot.

[@shadowopsairman1583]

Planning on a AAM 11.5 14 Bolt FF rear for my 2007 bowtie classic with 6 lug hubs and largest disc brakes that will fit 17" stock wheels to replace the drum rear on this truck.

[@AntoineMJames]

You forgot the HUD that comes only in the AT4

[@itswedgytime]

Own 1 of each. Bought the 2019 Trail Boss with the 5.3 first. In 2020, we bought the AT4 with the diesel. Paid almost the same price for both. 50k for the Trail Boss and 53k for the AT4. Love all the tech in the AT4 for towing and better fuel mileage. Will probably trade in the Trail Boss in a year for another AT4.

[@jo-wb6zs]

AT4 all day !

[@gregferris9378]

You guys should do a video on how to safely clean your engine compartment.

[@okie-rider]

Go to Chris Fix - he’s got you covered!

[@cameronhoover7561]

Cemical guys

[@jacobkrzyzek5777]

Look up Ammo nyc, amazing vehicle detailer!!

[@neilmac4730]

When I wash my truck it gets the same treatment under the hood.

[@K12SXXFire]

Can get the diesel in the Trail Boss now ! I'm comparing them as we speak !

[@cordellroberson532]

"No your Rong" Things you can get on AT4 that you can't on Trail Boss: •Diesel •Cooled seats •360 camera with trailer assist (camera pops up changing lanes with a blind spot overlay) •Standard leather with contrast stitching. •HID LED (TB has 30% dimmer LED UNLESS you get the midnight package) •Carbon bed •Digital gauge cluster •Adaptive cruise control •Power passenger seat •heated rear seats •Power folding towing mirrors with blind spot and auto dimming (trailboss are manual folding, do not dim, and not available if you select parking sensors) Custom trail boss is a WT with Trail boss goodies LT trail boss is based on the LT obviously AT4 is really an LTZ trailboss.

[@theinternets7516]

A winch from the factory would be incredible on both of these.

[@shadowopsairman1583]

Make sure it is wrecker grade

[@Le_Royaliste_Perlino]

And make sure Land Rover doesn’t install it.

[@stout_tossme7541]

@@Le_Royaliste_Perlino lol. Nailed it.

[@Le_Royaliste_Perlino]

@@stout_tossme7541 they didn’t nail it, they cut it, remember? 😂

[@theinternets7516]

@@Le_Royaliste_Perlino, high quality shade.

[@ColJonSquall1]

The bonus to GM's diesel (for Canadians), we can get it in base models, and its affordable. Unlike Ford not offering much off the price, and FCA deciding to pull a Ford and make it premium for a while. As currently Ram will only sell you an EcoDiesel in the Rebel package and up in Canada.

[@sha6mm]

Trail Boss with 5.3 for the money and this is from a Guy who is driving a GMC Sierra.

[@richr909]

I have a 2015 gmc sierra with the Ranchos. They were leaking bad after 20k miles and had to replace to fox. The fox are so much more comfortable

[@donknicker8110]

How expensive were those fox shocks

[@richr909]

@@donknicker8110 I have the 2.0's on my truck. They were $499.00 each for the fronts. So much smoother and more comfortable then the stock Z71 coilovers.

[@Stevonoles1]

Can you use the AT4 even though it is not painted red? Get off the red tow hooks guys. You have worn it out.

[@simmons1simmons]

When you spec these out similarly (no carbon pro bed) you quickly realize they are the same price, even more the sierra comes standard with many features that when optioned in the trailboss actually make the trailboss more expensive. I just bought a 2021 AT4 for 64k canadian, the closest trailboss was missing learher, had no multipro tailgate, no spray bed liner, no cooled seats and was 2k less. Ide say you are getting a better deal with the AT4, oh, also I managed to get the 3.0L duramax in it, so this is an obvious choice…go get the AT4 if you can find it….in my humble opinion.

[@ryanrobertson5457]

Tommy shortchanged the Sierra. Didn't even mention the rear camera mirror, heads up display or 360 degree cameras! I have an AT4 Duramax and picked it over the Trail Boss simply for the 3.0L. No regrets!

[@chestercalloway3812]

I guarantee somewhere online there is a group of GMC owners fighting with Chevy owners over the pros and cons of vertical tow hooks vs horizontal.

[@marcelo403polo2]

lol

[@landongoree442]

AT4 also has available heads up display, tech mirror, surround vision, adaptive cruise control, navigation (mentioned), power folding mirrors, dual powered seats, AT4 high clearance running boards, heated and ventilated seats (mentioned), rear heated seats (none of this is available on a trail boss). This one isn't equipped with it, but you can get better looking carbon pro wheel for the vehicle. Love these videos, but he missed many of options that differentiate the pick-ups. If you want to spend $55k on a pick-up with out dual powered seats and power folding mirrors, be my guest.

[@crazycoyote824]

Could you guys take a Chevy 2500 gas truck to Five Star Tuning and put a PROCHARGER on it?That’s a video I would love to see!!

[@NWI_Steel]

Pointless to put a centrifugal supercharger on a truck. You're better off with a roots style.

[@crazycoyote824]

Sure 🤨

[@noaheh8840]

I would pick a AT4 over a trailboss any day however, the interior in my 2017 gmc (to me) is way better than the new gmc or chevy interior

[@joelpierce3940]

I think the At4 comes with more options. Especially the tailgate!

[@andyham6094]

I prefer the look of the Chevy trail boss over the GMC Sierra although I wouldn’t actually buy either of them. I’d still take a Toyota Tundra trd pro over any other full size truck. Can’t wait to see the new tundra soon!!!

[@stevenmott6668]

100% agree. I’m waiting for the new Tundra as well...but a new 2022 interior in the Chevy would make me look at the TB very hard.

[@stevenmott6668]

Also...Chevy AND GM need to offer a bigger gas tanks...30-36 gallon would be nice

[@michaelpanacheese604]

Both are great trucks. But I would pick the at4 6.2. Gmc all day everyday 🤠

[@MHix63]

I think the "red tow hook" joke has run its course...

[@ryebread105]

I was going to say the same thing. I can’t take anymore of the cheesy/corny jokes.

[@59BigWalt]

What’s the difference in how they drive?

[@coleprell6280]

Trail boss has better tires, I don’t think the at4 usually has the wrangler tires

[@marcelo403polo2]

@@coleprell6280 duratracks are actually very noisy, I hate them on my sierra HD.

[@stevea3936]

The trail boss front end looks a little like the new blazer rs to me. the gmc is tastefully understated.

[@sunchaser999]

To me TB looks sportier and GMC more luxurious...both very nice.

[@EpilepticBob]

If the AT4 had black front end an rear end then I’d be a fan of the AT4

[@simmons1simmons]

It does

[@smarticus6384]

I took a ride in a new Sierra this week and even though it wasn’t the lowest trim level the interior cheapness made it feel like it was. I am not even going to bother looking at the Silverado now.

[@smarticus6384]

@Tsang Tsung I’ve bought a few trucks. I’ve owned new (1) GMC Sierra and (3) Silverado’s, (2) F-150 and (1) Tacoma. Not mentioning the used trucks I’ve owned. Just being honest the current GM interior is lacking behind Ford and Ram.

[@carloscampos3684]

I love the simplicity and the ruggedness of the GM trucks. It feels and drives like a truck. Column shifter and all. Justnot into all the fancy interiors out now.

[@googleaccount2637]

@@carloscampos3684 Same here the fancy interiors are for feminist city slicker, car folks.

[@smarticus6384]

@@carloscampos3684 I really get that and some of the best trucks I've owned have been lower trim models. Heck I owned a Toyota pre-Tacoma that was vinyl everything. Loved that about it. Mud? who cares, just hose it out, which I did many times. However my problem is that the GM price reflects luxury car prices but not delivering luxury interior. It would be very different if GM's rivals were also coming up short on interior, but they are not, and they are only getting better and delivering more for similar prices.

[@carloscampos3684]

@@smarticus6384 true very true.

[@mclyker]

Trail Boss with 6.2.

[@maxxtraxx04]

Stupid comparison here

[@rodjbosch]

I couldnt own a 5.3L I've had the 6.2L and several Ecoboosts and the 5.3 just feels blah. GM needs to upgrade the 5.3

[@maxxtraxx04]

@@rodjbosch better than an ecoboost

[@rodjbosch]

@@maxxtraxx04 Owned both....had multiple lifter/pushrod issues with the 6.2 among other things. Mpg better pulling with 6.2....but using premium. EcoBoost pulls better and feels sportier. So whatever....I'll take the Ecoboost If you think the 5.3L is better than anything you are stunned.

[@AStanton1966]

I had a base GMC Sierra WT. And take it from me, you should always get a truck with the steering wheel controls. Reaching through the spokes of the steering wheel to turn a micro-button to reset/change your gauges is a major pain. As for the red tow hooks, I liked that option so much that I had the hooks on my Silverado LTZ powder-coated red for $70. If you decide to do the same, you'll find that it's nearly impossible to remove the bolt on the driver's side without taking off your front end. I simply cut the bolt and bought a new one and reversed it. The cost for a new bolt from GM was $15.00. It was worth every penny.

[@chasindragons9919]

2020 you can have the 3.0 diesel in any truck, at least that's what I'm being told while ordering mine, the diesel is just an 885 dollar option now instead of truck specific

[@PWlangford1]

The carbon pro box has one disadvantage at this time is the lack of choice of truck caps you can buy for it. 🇨🇦 If GM is confident in the oil pump the warranty on the drive train should be longer and should be transferable.

[@FitForeGolf_]

Just got the Trail Boss with the 3.0 diesel.

[@foxwithshades7080]

Not impressed with either the Chevy or the GMC. Ford and Ram definitely have my attention right now.

[@brandedmcgowan9414]

So why you watching then? You must be interested in that diesel...😳

[@daniels2761]

@@brandedmcgowan9414 maybe he watched this video and that's why he's unimpressed....

[@brandedmcgowan9414]

@@daniels2761 I'm not liking the "2014" interior myself cause its outdated damn near six years ago but can't wait for the 2022 update as well and power increase.

[@carloscampos3684]

I have the at4 5.3 in black amd I love it. Interior is not to different than the Chevy but it has those refined touches. With the lift and the blocky hood people love it when they see it coming. My favorite part is the tailgate it really does come in handy with all the hauling I do.

[@stevelee9210]

Ive got a 20 at4 diesel... it's nice, but with gas prices relatively low, I sometimes regret not getting the 6.2L gas engine. The duramax is smooth and capable, but sometimes when you're feeling frisky, it feels a bit too tame. I had a 2016 AT with the 5.3 and it felt and sounded great. The only reason I traded it in was because the transmission was garbage. Also, fyi - all gmc crewcabs are built in Mexico.

[@mattclarke2728]

No there not my was made in the states

[@stevelee9210]

@@mattclarke2728 pretty sure all regular and crewcabs built after 2019 are from gm's silao, Mexico plant.

[@mattclarke2728]

@@stevelee9210 you are wrong most are built in the states very few are built in Mexico and starting next year none are made in Mexico they are going back to Canada

[@stevelee9210]

@@mattclarke2728 mine and about 15 others that i've physically seen from friends and dealerships in GA and NJ, are all built in Mexico. Maybe i'm wrong, but then that's a pretty high rate of coincidence.

[@baloo1522]

Reading this in 2022... Gas prices hitting $6 in some parts of the country... Looks like you're no longer regretting the Duramax!

[@user-gj8wo8lq9s]

Silverado, why pay extra for essentially the same truck?

[@geopioneergsxr5357]

GMC uses better components, and the front end looks way better on the GMC. GMC will hold that extra value all the way until resale too. The bed is entirely different (better) too. I would buy it just for those dirtbike tire cutouts in the bed, that's badass.

[@JohnDoe-nz6bk]

@@geopioneergsxr5357 🤣🤣🤣🤣

[@daniels2761]

@@geopioneergsxr5357 historically, no. You will see the Chevys and GMCs optioned similarly sell used at the same price. In some cases, the GMCs actually sell for less because there are less of them.

[@brendank4927]

@@daniels2761 bruh what. If there's less of them they'll sell for more lmao

[@mrrod3004]

@@brendank4927 not how that works buddy lol, there's less because there not as popular gmc is generic made chevy..

[@saad7896]

Lets be honest, neither truck should be THIS much of a price. Dealers and manufacturers are overcharging these trucks out of crazy.

[@joelpierce3940]

I like the 6.2. Get rid of the DOD lifters etc.

[@chernowitz]

Buy a discounted Silverado with the duramax in high country trim. Make sure it’s 2021 because it comes with adaptive dampers. I found a few for around $54k fully loaded

[@hoytjoshua82]

Wth is a discounted 2021 high country silverado with a duramax? On sale? That's like a 70k truck?

[@clintonstubbs2319]

The Sierra I really like because of the styling and the Duramax Diesel engine. The Silverado looks like there’s too much going on in the front.

[@norsevikingsir4932]

Agreed, I drive an 06 LBZ 2500 but wouldn't mind switching to GMC.

[@ViniciusLBueno]

I think GMC won

[@nicholashayes72]

Toyota has been using a composite need for years in the Tacoma. It’s amazing and if gm’s is anything like that I would take it hands down

[@kevinblock2307]

I still like the Trailboss

[@James_Hough]

What I really like from my spray-in bed liner besides the protection is that it is not slippery and stuff doesn't slide around like a drop-in bedliner. What about the carbon bed? How slippery is it?

[@marcelo403polo2]

I bet you could still spray new liner over it.

[@evfuture6643]

I think it is a shame that the Trail Boss is does not have the same options that the AT4 has like the 3.0 diesel and surround view camera. Maybe GM might consider an LTZ Trail Boss and not only the Custom Trail and the LT.

[@lsdemon7773]

I would go with the Silverado and save 10k.

[@JDMAN-gu8zl]

My complaints of the tailgate on the GMC is do not drop the step in the Tail gate with a ball mount in the receiver. Owned the truck 2 weeks and put a dent in the tailgate when it hit the ball mount.

[@corydelbiondo5773]

Curt makes a sensor that goes into your receiver and when you put the hitch in it does not allow the lower portion of the tailgate to drop so that you can't hit the ball. About $100

[@rockymountainjazzfan1822]

I've owned and driven diesels for over 40 years. That said, unless one is towing or doing a lot of highway driving, today's DPF/DEF-equipped diesels are not a good choice for short trips or urban commutes--in that duty, they will have problems over time. The 3.0 Duramax would be a good engine were it not for the belt-driven oil pump--that's a "cheap-out" design that will cost the owner a chunk when it has to be replaced at 150K miles. So, for most people, the Chevy Trail Boss will be the better buy. It's likely that GM doesn't offer the 3.0 diesel in the Chevy Trail Boss because it would pirate sales away from the GMC AT4. GM has to walk a tightrope to protect its GMC dealers because a number of them are not Chevy/GMC combination franchises. That, as much anything, is why there even are two GM divisions still building trucks. One note about the GM full-size half-tons--avoid the 8-speed auto trans--it's junk. Oh, and on the subject of GM diesels, the Colorado/Canyon diesel is nothing more than a rebadged VM Motori 2.8L diesel--the same basic engine sold in the U.S. in the 2005-6 Jeep Liberty CRD--and the damn thing has a timing belt that has to be replaced at 150K miles. It actually is a good engine, except for that.

[@erniearruda8861]

I personally like the looks on gmc design over the Chevy

[@Goot449]

Composite bed is promising but that sculpted shape at the top of the bedsides is going to make it nearly impossible to clamp any sort of cover or cap to the bed.

[@ur_quainmaster7901]

AT4 wins because it isn't hideous.

[@rwar2014]

AT4. I’ve had both and GmC hands down.

[@aal-m3545]

Once you go gmc you never go back to chevys , the wind insulation is so much better

[@aaronloggins3904]

Do you still have either? What made you switch or get rid of them? Thanks.

[@rwar2014]

@@aaronloggins3904 I have the AT4. It just seems to be a much better ride. The trail boss seemed to have a much looser suspension. Very bouncy. The AT4 seems more solid.

[@JohnDoe-nz6bk]

@@aal-m3545 🤣🤣

[@jaykanngiesser3454]

My biggest problem with Chevrolet pick ups is that you cannot get wheel arch mouldings. Stones chip the paint in the openings and then of course rust. EVERY 5 year old Chev I see has the wheel wells rotted out here where salt is used. GMC not so much. Can’t even buy asan accessory. Come on Chevrolet. Make them available at least!

[@collinator68]

In the end, you gotta ask yourself, is $10,000 worth it to you when you are already spending $55,000?

[@85funnyguy]

You can also get the 4.3 in the trailboss.

[@kurtkreiss5142]

The GMC looks like the F150, especially the headlights ...nice idea on the engine though!

[@coleprell6280]

Ford copied them lol

[@COChevyTrainMan1990]

Great comparison video, Tommy, great job. I would like to add additional information you left out in the video: Silverado Trailboss: Custom also has the 4.3L V6 as standard. Can get extended and crew cab, standard and short bed length on Custom, crew cab only with either standard or short bed on LT. Sierra AT4 Crew cab only with either standard or short bed length. If anyone wants a Silverado diesel to take off road, find one with the diesel, I suggest the RST model for its closest resemblance to the LT Trailbloss + its a cool model, have the Z71 off-road package, put on the factory lift kit, TRAILBOSS decal, and BOOM, Trailbloss Diesel. Be soooo cool. 😎✌️

[@joseramos7476]

At4 looks better

[@the_jarmel]

GREAT JOB TOMMY...

[@treadsidedown484]

Hasn't toyota been doing plastic beds for years? They seem to be holding up fairly well. What is the difference between the plastic beds from Toyota to gm?

[@RealNathanExplosion]

Trail Boss and RST are the only good looking current gen Silverados. GMC looks good across the board. Had a trail boss LT, would’ve gone AT4 if I did it again. Better looking and more features available

[@trailertrashtactics]

The AT4 has a diesel option so yes 😁

[@nilsjohansson9739]

Just buy a Silverado w/o the TB package in a Z71 with the off road tires and you could get the diesel. I actually think the 5.3 gas is the better option for a long term owner. The 4 popper is too buzzy, the 6.2 L needs premium gas and that diesel has the DFP tech that is destined to fail.

[@carloscampos3684]

I have the 5.3 and many complain on the lack of speed but it runs 0 to 60 in 7.5 seconds. For a truck thats good and I've never had anyone attempt to race me in my truck lol.

[@CraigSmith568]

@@carloscampos3684 I thought everyone raced their truck at every stoplight. You mean this isn't true? Of course I am being sarcastic, but they do put too much emphasis on 0-60 and which truck is faster.

[@jayt2266]

A body colored front bumper would look sharper in the Trail Boss but still prefer it over the GMC.

[@zoobrizz]

It looks great on my Black Z 71. Not so much on the red

[@louieatienza8762]

The AT4 CarbonPro bed is about a hundred pounds lighter than a steel, and I'm sure the diesel I-6 lighter than that 5.3, with 80ft-lb more of torque and the same 10 speed, so I'd guess that Sierra is better on the trails with likely higher payload and towing...

[@RB-xv4si]

60 pounds lighter

[@makattak88]

That new fancy tailgate is going to fail.

[@irakibbe9329]

How do you use the step when you have 5 sheets of plywood sitting over top of it? Sometimes simple is better. I would just stick to the bumper cut outs and save money.

[@dingakasteve]

Funny I’ve been debating on if I should trade from my trail boss 5.3 to a diesel at4. But it’s just been such a good truck, plus the 2019 have the comfort access buttons on the rear doors as well, which is super handy when you have kids.

[@lespaulplayer1234512]

why get an at4 with a diesel when you can just get the 6.2l? lol The 6.2 puts more power down.

[@cstansfield02]

Mileage. Lol

[@crudedriver]

The 3.0 has high torque starting at 1500 rpm vs. 6.2 around 3800-4000 rpm. The 6.2 cost more and higher price premium fuel. I own a 6.2

[@NWI_Steel]

Because posers love to say they have a diesel

[@bill9275]

Mileage is right. I’ve had full-size trucks all my life. Never cared about fuel when I was younger but now I do. I love the big displacement gas engines but there are only so many places to put that power down. Not practical. The diesel has the same torque as the 6.2 and awesome mileage. That’s the way to go IMO

[@kenmccune8843]

Both good looking trucks I love both trucks

[@TravNasty520]

Chevy needs to make the Trail Boss trim in the heavy duty trucks!

[@wilheimreis8272]

Id choose the 6.2 liter gmc at4 over the chevy any day

[@wwaytobe]

The main season I will not buy a GM truck. You will pay the same price or more then Ram and Ford and get less. I will say I hate the way the chevy looks (also never been a fan) but really like the GMC AT4. I saw a black trim edition and have to say that it looks way better then the chrome.

[@henryford2736]

The diesel if you're towing. It will do better than the 5.3.

[@rossgreenzweig]

Trial Boss👌🏼

[@hgtydjdjdgh67889]

Honestly, this is the video I think a lot of us have wanted to see. I'm a GM-person and I prefer the Silverado front-end and fenders (both very important to me) but I love the I6 (I think this is going to be required for me), the GMC bed (the carbon-pro) but I could do without the fancy tailgate. Either way, I think I'll be looking at the used market in 4-6 years for a 2-4 year old, 40-60k mile used one in hopes of paying closer to $38-42k

[@StoneysWorkshop]

Those engine bays looks really shallow! sheesh!

[@TheCarCrazyGuy]

The GMC is less ugly.

[@amb158]

I wonder if they could’ve given any less working space in that engine bay of that trial boss. No thanks. On that alone I’d rather spend an extra 10k on almost anything with more working space. Personally the biggest thing I’m not a fan of is on the Sierra, that carbon/plastic bed. No thanks. I don’t really see that holding up for 20-25 years. Maybe it will, who knows, but that seems like an ideal bed for someone who isn’t using their truck for much. I’ll take the steel bed and a bedliner.

[@Lifehackz137]

So my 5.3 2021 Sierra sle gas more hp then the at4?

[@peorq1]

The more fancy gadgets the more you you have to pay to repair them, they will eventually start to fail at 60k plus

[@ryebread105]

Both trucks look good on the outside. But as soon as you step inside....boring.

[@tman1129]

Sooo.. ur saying I should get a Silverado and swap out the tailgate? Good review Tommy!

[@chrisplatz3114]

6.2 is so much more fun to drive. Proven also.

[@marcelo403polo2]

nope. deleted and custom tuned 6.6 duramax is way more fun. Proven on my own

[@E39M5SPEED]

GMC is for Professionals. Chevrolet is for hobbyists.

[@Gpaiva24]

AT4

[@terrencejones9817]

Failed to mention the Digital gauges the door trim and the thicker dash padding on the AT4. Yes the over design theme is the same. But all of the materials are different.

[@JohnDoe-nz6bk]

Wroooong

[@terrencejones9817]

@@JohnDoe-nz6bk Not wrong. Unlike most people in the comments I happen to know what I'm talking about. Every single trim piece in an AT4 has a different part number. I also own a Trail boss and have plenty of seat time in the AT4.

[@JohnDoe-nz6bk]

@@terrencejones9817 well, considering I own a sierra with the 3.0 duramax, I known what I'm talking about as well. You're completely wrong!

[@terrencejones9817]

@@JohnDoe-nz6bk not all Sierra interiors are the same you know. AT4 and Denali all have much thicker leather padding on the door trim, the dash, the center console. Again I have access to the part numbers. They are all different parts. Your perception isn't reality.

[@JohnDoe-nz6bk]

@@terrencejones9817 my perception is reality. You're the one that's delusional thinking that the interiors on the Silverado and sierra are different. 🤦‍♂️

[@gregferris9378]

So how do you put long items in the GMC then flip up the part on the tailgate to keep them in there? So you'd have to flip it up first then put the items in but then you have to reach way up over that part of the tailgate.

[@samwise7240]

Wish there was discounts covid sky rocketed prices on shit

[@edgarbrooks7695]

they are the same company and same brand just different names

[@navauto1239]

If I was buying a 1500, what would you recommend to be your 1st choice and 2nd. THANKS.

[@TheDESTROYRR95]

That would depend. Do you want a lot of nice features? If not get a Tundra for sure.

[@taps9123]

GMC AT4 or the Trailboss, all on whatever your budget is, or look into the Silverado RST or GMC Elevation. My first two choices.

[@coleprell6280]

Trail boss all the way

[@jeffspence8376]

Ike gaunlet with the AT4 straight 6 desiel? Why haven't ya'll test that yet?

[@jdfleetguy28]

I will take the AT4, in fact I did exactly that earlier this month. Mine is identical to that one shown. With this months GM promo's/rebates etc. It cost 55K out the door. They have rebates and employee pricing for everyone this month. Almost year around $8K-10K off sticker is really pretty common. You can get a AT4 spec more closely to the Trail boss shown here, and the price gets to be really close as well. That AT4 shown has a spec near same as Denali, so it is priced like a Denali.

[@ChrisDIYerOklahoma]

If anyone actually pays more than $60,000 (USD) for a new 2021 GMC Sierra AT4 (with either the 6.2L or diesel) they are getting boned by the dealership. Mine was (MSRP) $66,210 with all options and the 6.2L...not even close to what I actually paid or it (waaaay below $60,000)

[@AStanton1966]

Like anything, it depends when you buy and the available incentives. I always thought that the employee pricing was a big bunch of BS. However, I purchased my 2017 Silverado LTZ new in December and thought that I got a good deal between the employee pricing and the value for my trade in--a Sierra WT 1500 which I absolutely hated!

[@CT-go5ii]

Chris DIYer how much did you pay for you truck?

[@AStanton1966]

@@CT-go5ii The list on my 2017 Silverado LTZ Z-71 was $52,300. Out the door, I traded a 2014 Sierra 1500 WT 4x4 double cab, 4.3 and gave $26,000 and some change. I also got the dealer to put factory mud flaps on all 4-wheels of the Silverado.

[@ChrisDIYerOklahoma]

@@CT-go5ii fifty six

[@joel.7372]

The GMC front end look very much like Ford F150 copy. I still like both GM and Ford.

[@googleaccount2637]

yet ford has been using the horizontal bar across the grille with stacked headlights and the new f150 looks strikingly similar to the 07-13 GMC Sierra.

[@DR0CK]

I literally just yesterday was wondering whats the difference other then cost. You guys are awesome. Front end: TBOSS sporty, AT4 agressive/trucky