Hi folks! We try and go in-depth here on Truck King, sparing no detail, which makes the videos a little long. From now on, we'll include a glossary in the description so you can navigate to a specific test. Here is the glossary for this video: Walkaround - 1:06 In-Depth Look at CarbonPro - 2:22 Sierra AT4 Pricing - 4:16 CarbonPro Easter Egg - 6:07 Payload test - 10:27 Towing test - 15:32 Off-Road test - 22:28

I honestly have almost always preferred the front end on the Sierra over the Silverado.

No spiders were hurt either. I saw him crawling away after the block stopped moving. lol

That 'Connor's Way' Easter egg is really cool. Kudos to their amazing design team and capable engineers

Them Canadian Duke boys is running shine again,,,,,,,,,, yeehoo!!!

My new favourite channel for truck reviews :). You guys do sooo much more than just show the engine and bed and interior . Keep up the amazing work !!!

You really nailed this review! Very enjoyable to watch and you covered everything im interested in. Specs, price, cool features, driving feel and impressions under load, EPA economy loaded and unloaded and of course offroading it through the hydro line! Love the channel bud!

Great review of the Sierra AT4. The Sierra is an awesome looking Truck and that carbon fiber bed is really nice. Thanks to you and your Dad for the review.

Beautiful truck, love it. Almost 100k for a truck is crazy.

Honestly, one of the best reviews I’ve seen on a truck. This is the type of stuff real truck drivers like to see and know about. Keep it up!! 💯💯 really love this AT4, have had mine for about 2 weeks and love every single thing about it.

Always love the hydro line off road! Great job 👏 👍

I've had my white one since December and love it every day. Consistency get mid 20's to 26mpg city 31 highway. Has more options than I'll ever use too

So, I love your dad's approach. No BS. Direct. My kids say I am the same way. Lol.

Liked the vid! The AT4 has been on my radar for the past 2 months. The RAM 1500 Laramie has been my #1 pick, but the AT4 is slowly becoming my fav!!

What about the spider? Was it hurt? 😆 🤣

Love these reviews - great job guys

Loved my Tacoma composite bed. Put in a rubber mat and had amazing grip. Great to see your dad in the videos. It will make great memories. You guys have the same voice.

Got my at4 duramax ordered. Can’t wait. Thanks for the video

I was sad to see you go on tfl but I’m sooo happy to see you keep doing what you love keeping us informed with quality content

Really enjoy your channel, great review. Thanks for taking the time.

“No concrete blocks were hurt “ lol good one 👍🏼

Out of all the half tons this is my favorite.

Love my At4 carbon pro and the 6.2L engine great truck so far

Love your reviews! I'd really like to hear more of the engine sounds in your future videos.

I appreciate the review and the mpg conversion. Many thanks 🙏

Current own and love a Duramax Canyon AT. But this truck is going to be real tempting in a couple years....thanks for the review!

Love when you get sound up going offroad "!! Beautiful future journalist you have there"!!!

This is the same truck I have, but mine is finished in Summit White. I LOVE this truck!

Something I have realized on ram truck is when you tow a heavy trailer it sort of makes the whole truck sit lower even in the front although it’s is still lower in the back because of the weight

love this channel and the reviews. I’m so glad you don’t compare every truck to a “Raptor” like the other channel

Looking for a truck review by guys who understand it 100%, there are no other place on the internet, thank you truck king!

just bought the same truck a few weeks ago, I'm still learning all of the features and Easter eggs... great video and I can honestly say this is the best vehicle I have ever owned.. and I have owned over 100 vehicles.. including the monster dually in my profile picture. You really get the best of all worlds, great gas mileage, superior comfort and tech, great off road capabilities from the factory, while not compromising the ride.GMC nailed this one!!

Another great review! There’s a couple at4s in my neighborhood and they’re a head turner....or maybe it’s just me lol.

I live in British Columbia and have the same truck, minus the Carbon Pro. It is amazing!

Also a Suggestion with these half tons is to start using the travel trailer as a test bench. Most people buying half tons are towing high profile trailers like travel trailers, and that would give them a more realistic expectation of fuel economy towing with wind resistance. Flatbeds are easy to load for weight, but they really don't have any resistance other than rolling. You could also get a better idea for how the trucks handle sway, as TTs are notoriously easy to get swaying, as well as to improperly load.

Nice truck, I have the 2020 3500 HD AT4 version...All in all, despite capacity/power differences they're comparable... Having my truck since 5/11/2020, IF I could could have just one "techie" item, it'd be that rear view mirror camera, that is my favorite... Tires, mine came with Goodyear Trailrunner AT, which were not the caliber of tire that belongs on this caliber of truck, so I had them replaced with(with less than 3000 miles) Bridgestone Dueler Revo 3, which are more commensurate to the truck of this caliber...I have been running Bridgestone Dueler AT Revo's for the last 18yrs, starting with the original Duelers, going into the Revo 2, and now the Revo 3, the 3rd iteration of that tire line...

Nice one bud. Hoping to see some F150s being tested as well. Keep up the great work

Great Review - Well Done! Thank you!

Your content is getting better. Keep it up

Great review!

I would like to see reviews towing a 7000lb camper. How much of a factor wind resistance and sway affect the towing experience vs a flat trailer with the same weight.

Thats a beauty. Love GMC. 🇨🇦

I just subscribed; are you still doing work with the TFL guys? I always loved the off reading you did in Canada. It actually looks a lot closer to the muddy off roading you tend to find here in the southeastern US than anything I’ve seen them run out west.

I bought a 2020 At4 with the 6.2 in it. Msrp was 68k, has everything but the carbon pro bed. Chose it over a Denali because of the capability and less chrome. The only real difference is the off-road package and the At4 has carbon fiber inserts in the door handholds. Great truck, would highly recommend. Towed a 4200lb car when I moved with it on a car trailer and averaged 14.1mpg on varying grades over 320 miles.

Great job, Steve. Another 👍

Blows my mind how far technology has come.

You two are great folks 👍👍 What too hell 🤣🤣👍 Keep up the Great Stuff guys! The Vermonter

Great job guys! I am getting this truck in red!

Love the tailgate. Wish they had put one like it on the Zr2. But hey can't always get what you want. I'll take the front locker over the tailgate any day.

Great video!

Slippery is good to sly in sheets of drywall because drywall could break easley if you try to sly it on a bed that has spread in bedliner. In your older video with TFL you first said your not a big fan of the multi tailgate.

Just placed my order for my 2021 Sierra at4 but I just got the preferred package and technology package. The carbon bed just seems to expensive for what it is. Plus I got mine at $68k with discounts due to truck month! Can't wait to get it and thanks for the great review!

Great review

Great content.

Great vid!

Thanks for the videos on the New 3.0L Duramax! Am retiring this summer(72) had many new 6.6 Duramax GM’s! Time to downscale back to 1500 1/2 ton.Want …. don’t need a diesel. but want one! Thanks to your vids. I’m in! Base model for me! Don’t need all bells & whistle @ this time of my life! Have allways had a new pick up ! Why change now,,, I get it from the “ get go!” Again thanks,, helped with my choice!

Great content

A guy can really appreciate that work bench tailgate

Would you be able to test the off-road chops of the gm single speed transfer case with the 2.7l turbo engine in GMC or chevy? Would love to see the limitations! Keep up the great content. Stay safe.

I used to have a beard like yours Steven. People started calling me mop-chin. lol!

Almost hurt that Spider , You at least disturbed his home..LOL 7:21

I do like the tailgate but I wish that Ram would have included the pop up load extender, that would have made Ram favorite tailgate.

I have a Sierra I was going to add those wheels and tires, which tires would you recommend instead of the duratrac. I’d like the off road performance but less road noise.

love your reviews, great both you and your dad. thanks for doind this. I have a more personal question, being a big guy myself, I was wondering how tall/weight are you? there aren't much large people doing truck reviews Thanks

Just stumbled across your awesome channel. Awesome review! Sounds like the new diesel and AT4 are a winning combo and incentives are $8-$10k off until early January. A 2500HD Duramax is overkill for my needs so this might be the answer.

In such professional review I would show pricing not like reading newspaper but rather like at least scanned to pdf file shown on the screen.

Can you do an F-150 with the FX4 package?

Your a cool dude, I enjoyed your review

Although I'm Canadian I'd be inclined to do everything in US units, add metric in afterwards. Ultimately the US is where the bulk of your views will eventually come from.

Carbon fill PA6. It's Nylon with carbon fiber impregnated. Very durable stuff though. As strong as Aluminum, but much lighter, so you can lay it on thick. Even though plastic is usually cheap, this is about as expensive as stamped steel, due to the fiber fill tearing up the molds much faster.

I love the canadian content!🇨🇦 even better that its in ontario👍👍

I have a feeling that those beds aren't going to look too good in the future when the truck is 10+ years old. I know not many people care about that, but I'm a guy who likes to hold on to his vehicles for a while. I've had my 16 year old dodge ram for 10 years.

What app are you using on your phone to do the speed tests?

Very nice!

Always like how indepth you went into the reviews even when you were with TFL. Somewhat better knowledge of the vehicles! Still like TFL, but have to give it to Truck King

Isn’t this the guy from TFL?

I wish they made this carbon pro for the heavy duty trucks. Would be nice

Try the concrete block drop when the bed is frozen at -30 lol in average canadian day winters

I’m very clumsy. That multifunction tailgate would cause me too many injuries. Lol

Great video. At 19:10 the truck wheels look like they are going in reverse. The trailer wheels look like they are going forward..... Isn't science fun?

I love my 2021 1500 sierra denali diesel.

Truck king is the bed weight less then the traditional steel or aluminum?

This is the only GM product that would steer me away from my BMW X5 diesel. The in-line engines are great. 9.5 l/100 are what immer getting in city 7/100 highway. This is great for a full size truck.

. The up rear view camera is for looking out for REVENUERS helicopter, when ya moving ya'lls moonshine/still. HA.HA.HA O & very Good video. HA.HA.HA

You almost killed that spider 🤣🤣

i want one. my heart is pumping hard just watching that truck.

My 17 sierra is rated for 1890lbs payload.... I've had a cubic yard of 2" round river rock. And 3 adults. (3000lb of rock and 600 of people. Still wasn't down to the bump stops. Payload is wwwaaaayyyy underrated on these trucks. (P-rated tires are the Achilles heal on most)

If you load a standard 4x4 atv in the back is there enough room with the tailgate down for the load stopper to pop up to act as a secondary safety to keep the quad on or do the rear tires end up on that area making it unable to open up?

That wax coated frame is already rusting .... That's honestly a Deal breaker

At 3:42 you say that you don't lose any functionality with the Carbon Pro bed but I disagree. With the sloped transition from the bed sides to the bottom of the bed rails, you cannot mount a camper shell because there is no where to put the clamps. You can get creative and use one of the tie down hooks to secure the shell to the bed but then you would be losing "functionality" of a bed anchor point. Aside from this one oversight, good review. I have a 2020 Chevy 3.0 4x4 and love it.

Great video, that's just what I asked for after watching the trail boss video, was the payload and your opinion, question is I put 1400 pounds in the back and it went down two and half inches right over the axles, I was wondering about the tires taking that weight,stock 20inch tires

Can you do the at4 HD?

Put a tow hitch in with the tow ball and then open the tollgate like you did at 9 minutes and 30 seconds

Definitely an awesome truck. But I’m worried the CarbonPro can limit what you can attach. I’ve seen some tonneau covers that are compatible but haven’t seen any caps or racks get fitted.

Excellent super,,, so Amazing Truck,,, 🦋🌼🦋🌼🦋🌼

Well, I’m sold.

The z71 sport comes with noisy tires too I believe.

The next gen motor has over 300hp. I'm curious to see what you guys think of the upgrade.

Sure looks good that truck.

Do all the AT-4’s had that bad brown on the seats?