Family Vacation: I Test If The 2021 GMC Sierra Diesel REALLY Gets 24 MPG On A 400-Mile Road Trip!

[@bmartin7828]

Awesome and honest reviews, thank you so much Andre. Love all the TFL content.

[@TheRamGuy]

You know its cold when the snow crunches under your feet

[@kevinbarry71]

When it is really cold the snow squeaks

[@elchucofried5683]

@@kevinbarry71 damn im glad i live in Texas where it snows maybe once a year lol

[@rockymountainjazzfan1822]

@@kevinbarry71 Bingo. Coldest ambient temperature I've personally experienced in the Rockies is -55° F. Plenty of times below -40° F. #2 diesel fuel at that temperature is pure slush, #1 gels. Without heated fuel tanks, diesel equipment at that temperature had to burn Jet A. Hard on the engines, but they wouldn't stay running otherwise. Block heaters were an absolutely necessity for diesels, and often needed for gas engines, too. Believe it or not, I actually enjoyed those winters.

[@killerrf]

rockymountainjazzfan the cold keeps all the dipsticks in doors haha

[@jrod2500]

The sound of crunchy snow is proof of just how cold it is. Lol

[@MtnmanMtnman]

I have the 2020 AT4 with the LM2 diesel and I absolutely love it. I average 24+ mpg in all around driving. Couple that with the exceptional low end power and you have an unbeatable combo for a full sized truck. Great video, glad you had fun with the family, love watching all the reviews.

[@watchmanexpert]

24 city ? O highway?

[@bradh6185]

Are you still happy with the LM2?

[@rsdokc]

Waking up with a new video and truck from Andre. Good way to start the day. Happy Monday have a great trip

[@jdfleetguy28]

Great job Andre ! I own a 2021 Twin to that truck and you really nailed it. I thought that tailgate was gimmick, more trouble than it was probably worth . I too am finding it quite handy now that I have one , I find myself using and enjoying it’s features quite often. I got the same milage yesterday, on a trip I took on lower speed 2 lane highways. As long as I keep the speeds down in the 55-65mph range it get around 25 mpg. Interstate 80-85mph with hills and wind , that drops to 17-20 mpg. Love the 3.0L Duramax .

[@andysmith5220]

I've had the same diesel truck since it came out in 2019. I still get 24 driving around. Current mileage is 17000

[@crunchyblack2224]

Any issues with the engine? I’m looking at buying one of these.

[@andysmith5220]

@@crunchyblack2224 best engine I ever owned. Runs like a champ super quiet. Not temperamental like rams or fords

[@steveknight9254]

How’s the oil consumption chad Ivan reported some usage and I was disappointed in that.

[@andysmith5220]

@@steveknight9254 I've never added oil ever too engine its honestly perfect

[@miguelmachado5807]

How often are you adding DEF?

[@shanechepren8119]

The more I see these videos of the AT4, the more I want one..... until I hear the price.

[@SkippyPB.]

Discounts can be had, but even that its still expensive.

[@fikes73]

Go for the Silverado LT with the duramax and 4x4. A lot less money for same performance

[@petersteele1383]

We bought a 3500hd Sierra base with a 6.6 Duramax for $50k just missing the bling for $30k less. Great truck...

[@killerrf]

Peter Steele u will get well into 20+ mpg with the 6.6 also pull big loads when needed. Yea if u don’t need the bling good price.

[@georgewilliams6328]

The only the about the multipro tailgate is you have to make sure you remember to take the hitch out of the receiver when you get through using it so you don't forget and drop the tailgate down on it!

[@ZzHasbrozZ]

I’ve got the crew cab 6.5’ bed in 2wd. Gasoline version. My best MPG is 28.something. The tailgate sells the truck. 8 times out of 10 I open the secondary gate and use it to step up into the bed or put it down to reach father into the bed. I think the current style is spot on and hope it sticks around for a long while. Just got a wireless CarPlay adaptor so I can wireless charge and still have CarPlay working. Best add on so far. I really wish there was more accessories that work together like a bed cover that works with a corner post rack system to hold a tent and still allows you to open the bedcover(tri fold). Everything thing I see uses a clamp system that you can’t have both at once.

[@sf44t1]

I have the 2020 AT4 w/3.0 Duramax that I purchased in early Aug 2020, trading in my 2011 6.2L Ford Raptor with 67K miles that was getting 13 locally and about 15 hwy if everything was in my favor. My AT4 currently has 3900 miles, has averaged 24 MPG since I left the dealer, the best 50 miles according to the display is 31.4 MPG. It’s been pretty much a 50/50 split between local driving and road trips. I still have a while to go for the first oil change. The truck is loaded with every option, the technology is great, the truck has the trailer towing mirrors,👍🏼, the 6’7” bed, the 20” wheels w/Goodyear All Terrains (I did want the 18” wheels) , premium paint, the off road side steps, the 3.0 Duramax/10 speed, every option package, tech package, the console vault and rear under seat storage box, etc. It runs great cruises at low RPMs, the 10 speed is a perfect match, fuel range is outstanding, plenty of power and really quiet & comfortable. The cameras are amazing. The only two things I have done so far was a black DIAMOND BACK HD cover & Craven Speed stubby antenna. I would recommend the AT4 w/Duramax with out any reservations!

[@ThatGratefulGuy]

I love how you threw the family ski trip storyline into this mpg review. Great creativity.

[@robertmills794]

Bought a '21 on the 29th of Dec. Just over 1K miles and the mileage is hovering around 24 combined.

[@Ducati_rider69]

I didn’t know about the shutters on the radiator. That’s a pretty awesome feature!

[@gregferris9378]

Beautiful locations. Now that's what I call a real world review.

[@fisherholmsfly]

I like the new diesels from GM. I’ll probably end up buying one later this year.

[@michaelhorner4011]

I might go test drive one ... have never owned a diesel anything in my life ... I like the fact that GM used a inline 6 .... Ford and Ram should do the same!

[@martingomez4520]

I got a 2021 6.2 denali and i get anywhere from 18 to 25 just depends on freeway. I went from Michigan to texas and back and ended with 21 average When freeways where 55 mph speed limit i got 25 and when it was 75 mph speed limit i got 18 Only time i really want the diesel is towing. it absolutely plummets down to 13 hauling about 3,000 pounds and premium is getting expensive again lol

[@dimpapathe]

The best presenter ever ! Thanks 🙏

[@normt430]

So much better than Nathan!

[@denim_joey]

Andre needs to go full Russian with the track suit!

[@tallll70]

That would look classic indeed

[@stout_tossme7541]

Gold chain as well. Lol

[@AmazonWebService98]

i did a 316 mpg loop yesterday with my canyon with RTT, way in i got 19 mpg with some strong headwinds on the way back I got 21.5 mpg v6 crew cab 4x4

[@Flyover77777]

I ran my 2019 V6 Canyon 4x4 All Terrain 400 miles across SD at 86 mph into a decent wind last week & achieved a solid 14 mpg but 18 mpg coming home

[@michaelhorner4011]

@@Flyover77777 I can see why the semi trucks have the aero kit above the cab now .... wind is a beyotch on mpg !

[@inferno1770]

I'm a toyota guy but I've always like gmc cause of all the extra gadgets that they put into the build of the vehicle I definitely would consider this truck if I needed a diesel truck .

[@mikefoehr235]

I am pretty sure the engine is a Toyota. Made by Isuzu of Japan...a sub of Toyota. Engine should be pretty good I am guessing.

[@RedWingsninetyone]

@@mikefoehr235 I believe this engine is a new engine, not from Isuzu. The one in the Colorado/Canyon is from Thailand. Also, Toyota owned less than 6% of Isuzu when they did own it, but sold off that in 2018.

[@mikefoehr235]

@@RedWingsninetyone I guess Toyota figures they own 100% of Daihatsu, so no need for Isuzu anymore. Never knew GM had a tie to Thailand. Now GM has shrunk their logo...sign of how they are a shadow of their former self.

[@RedWingsninetyone]

@@mikefoehr235 GM is all over the world and has ties to Isuzu and Holden, among others. GM had worked with Toyota in the past though. I'm with you though that I'm not a fan of the new logo. It wouldn't be so bad, but the lower case letters are just wrong.

[@mikefoehr235]

@@RedWingsninetyone I think a lot of Australians are not thrilled with the GM and Holden situation. I think GM kind of ruined HOLDEN for the most part based on what I have seen on YT.

[@youtubeaccount9058]

The new Yukon is available with the same engine, now that would be the thing for a 400 mile round trip to take the family skiing.

[@vondecker7774]

So many great things in that video!!! Colorado, snow, skiing, trucks, family, and most of all the floppy hat!!! The only thing I didn’t like was the price of the truck! Although it may steer my attention from the F150 with the diesel with the mpg. Thanks Andre/ TFL for a great video.

[@treborheminway3814]

Thanks for taking us on vacation!

[@dlg5485]

25 mpg with a full load of people and gear is outstanding for a full size off road truck with 420 lb-ft of available torque. If I was to get a Sierra, I'd probably go with this 3.0 Duramax. It's an incredibly smooth and efficient engine. That said, there are a few known issues with, so I will definitely wait a few years for the bugs to get worked out.

[@admranger]

nice review Andre'! I enjoy your reviews. I remember when my knees would support doing things like skiing. So long ago...

[@kevinkrueger3686]

Ha!! Monarch Mountain!!!! That was my "hometown" mountain after Cuchara Mountain closed. It was almost equal distance to Monarch or Wolf Creek. I do believe Cuchara has reopened a lift for the 20/21 season.

[@sdjrinc.6921]

I'm glad your testing the GMC Sierra duramax I have a 2020 Denali duramax version and I love it

[@billygoat7c]

Great mileage review, love the real world reviews. Would be great to see what kind of def usage these new diesels have too, especially the ones you get to keep longer

[@PWlangford1]

I like the shutters behind the grill.

[@simsational...]

Thanks for showing the how to start the truck with the key. I had know idea you had to hit the lock first.

[@regsparkes6507]

Including warm up idling,.... I am impressed!

[@anthonyc1883]

PLUS the winterized diesel fuel, which always cut down the mpg in my Jetta TDI.

[@regsparkes6507]

@@anthonyc1883 A Jetta TDI,..now there's a mileage 'king'! Wish I still had my '77 VW Rabbit TDI!

[@anthonyc1883]

@@regsparkes6507 My man! Do you remember the official color of yours? My first car was a new 1978 gasser Rabbit C in "Panama Brown" (LOL!!) which was basically a burnt orange. I very well remember the diesel Rabbits. A long-ago friend's dad had one. But I don't think the Rabbit diesel of that era had a turbo and therefore wouldn't have been a TDI. It was just a little 4-banger diesel. 48 horsepower was the rating, I'm almost certain.

[@regsparkes6507]

@@anthonyc1883 I do remember the color it was red,, not too dark but a shade darker than Marilyn Monroe lipstick color! . Of course you are correct it was Not a Turbo, ( I miss-spoke there ) it was just a naturally asperated diesel, therefore only a DI,..hahaha. I can recall that I got some 50 to 55 MPG as it was a manual transmission car, but it was a dream ( of the day ) to drive whether short runs or long distances.

[@anthonyc1883]

@@regsparkes6507 Couldn't resist looking it up. For 1977 the red paint that VW applied to Rabbits was Mars Red. Did you live in a cold climate back then? I remember my friend's dad had to cut the diesel fuel with a certain percentage of kerosene or gasoline when temps here in Chicago got really cold.

[@gerry2893]

The Sierra is the best looking truck currently IMO. Love the idea of the diesel but worry about the eventual maintenance (cost etc.). Wonder if the 5.3 is the way to go in the long run. Great review Sir...!

[@aaronbritt2025]

I don't get why people say this. My '18 F150 diesel hasn't cost me any more to maintain than my '14 with the 5.0.

[@tclg1]

I start my truck every morning for 6 months every year averaging -20C -40C, sometimes as low as -50

[@rkalla]

What kind of truck?

[@tclg1]

Vortec 6.2L V8, not plugged in or anything. Not a diesel, but still.. These temperatures are pretty harsh in any engine

[@zachf355]

Duh! Diesels are hard starting at cold that is why he was testing it. So your post is useless

[@tclg1]

@@zachf355 3F is barely cold

[@RedWingsninetyone]

@@zachf355 little diesels aren't as bad. The Colorado even claimed to be able to start at -30°F without a block heater. It's when you get to the 3500's or semi engines that you have major issues with cold.

[@Luke28_01]

Ahhhh anyone else think he was half asleep when he woke up for the opening If the video. I love these guys 😂😂😂

[@eriktabor6478]

I’ve got a ‘20 Silverado with 3.0 Diesel and it definitely doesn’t like the cold. On a trip for thanksgiving I got 28.5 Mpg (temps in the 50’s), I did the same trip for Christmas and it was in the 20’s up to 30 degrees and got 23.5 mpg. I bet the louvers behind the grill closing cause a lack of aero, and the cold might keep engine temps just sub optimal. Mileage seems ok when driving 40 degrees and above. Heck in the summer I did a trip with 4 people and a bed full of stuff to the Outer Banks, NC, and got 29.7 mpg on the way down and 30.0 mpg on the way home! It’s a mileage machine.

[@alanyoung4102]

I wonder if the mpg difference is more due to winter blend of diesel...

[@eriktabor6478]

It’s plausible, although I haven’t really seen any comparable decrease in mileage on normal tanks when not traveling. Where I live (WV) we don’t get that kind of brutal cold I saw on the way back from CT, and I’m sure I have winter blend here. It’s gotta be the louvers as a major factor. They seem to come into play under 40 degrees from what I can tell, and I get plenty time here under that.

[@GATORADDAM]

Very impressive fuel mileage. But 64 thousand bucks makes my heart flutter!

[@northerntoyota7584]

GM making the diesel basically a no charge upgrade over the 5.3 is an industry revolution! Look at all other manufacturers and what they charge for their diesel options. The fuel economy is great.

[@MidniteLiquid]

I have a truck exactly like this... same color too, and I absolutely love it! Have only had it for a couple of weeks and haven't tried out the multipro sound system, but everything else is amazing! Need to get the sub to compliment the amazing sound system. :)

[@BIGJBIGEBIGC]

Andre.... imagine if GMC put the multipro tailgate on the Yukon somehow....

[@BrandanM94]

I swear Andre must live right down the road from me haha every time he films a video near his home it’s literally my area which I live here in Thornton. 136ave 🤘🏻

[@bigjoemann]

I spent a lot of time visiting family in the old part of town off of 88th. Thanks to COVID, haven't been back since August 2019.

[@BrandanM94]

@@bigjoemann I’m close by lol crazy

[@KeystoneTexan]

Even though I just bought a 2018 Toyota Tundra Crew Max Limited 4wd, that GMC is my favorite truck on the road

[@Klusk91]

I used the adaptive cruise to draft a semi at 70mph. Got 28mpg for that 100 mile section and finished the 450 mile trip averaging 26.6 on the computer which is always close to 1mpg too low.

[@BrandanM94]

Andre sure has a special love for GM trucks , just like me. 🤘🏻 great content as always TFL!

[@tundraspecialops]

I've always figured Andre for a Ford guy.

[@mr.mr.3301]

Started researching this truck. The engine has a oil pump belt that is deep in the engine. Has to be changes at 150000 miles.

[@mr.mr.3301]

@@andrewsbbq wonder what that service cost

[@lyleswavel320]

Even the best engine, 5.9 Cummins require major maintenance at 185,000 miles per engineer's, so at 150,000 miles belt change at $800-$1000 is not bad

[@slmjake]

Great video Andre! I am really impressed with my 2021 GMC 1500 with the 3.0 liter. Very smooth and torque way down low and great fuel economy! If GM invested a bit more it would be the perfect heavy half ton for a light weight truck camper or pulling. However I dont care for 5 8 inch bed..too short and my fault. Also hate the 22 gallon fuel tank and only 1750 pounds payload and 3.23 gears. Not engineered for what I need and thats on me for signing a lease for this. It would suit most others just fine. Glad I leased as I will buy an F150 with HEAVY DUTY PAYLOAD PACKAGE and 6.5 bed and 36 gallon tank and truck tires and made in Dearborn by folks who pay taxes. Last of the real heavy half tons in the world where all these fancy city trucks with too many options and made outside of U.S. dominate the bug box retailers full of Chinese goods. We dont jerr to blame politicians just look in the mirror on how we turn our backs on eachother by not buying from our neighbors. I am guilty.

[@danthompson1467]

I'm impressed it started with out any hesitation as I always say you just have to much fun lol

[@sergiocastro1429]

The crunchy snow noise when you walk drove me crazy 🤪

[@bschell1969]

Sounds godamn good on a cold start

[@johngaudet6316]

The D maxs are great in cold weather.

[@bschell1969]

@@johngaudet6316 the oil pump belt and timing chain in the back still kills these for me

[@WW-wf8tu]

Crunchy snow is icy snow. Cold snow.

[@kevinbarry71]

Remember, he's saying 3°F. Which for those of you afflicted with the metric system is -16

[@mikefoehr235]

Metric is like COVID 19....ALL over the world.

[@garthwheeler1338]

Metric system is much easier to use, particularly in the military or scientific world! If born and raised n metric system it is as natural as someone raised on the British Standard Imperial system of measurement such as used in USA.

[@mikefoehr235]

@@garthwheeler1338 One more thing...I have made a career as a surveyor....so in imperial, surveyors change the foot to metric....so 10ths, 100th ms a d sometimes 1000ths....BUT BUT ALL trades people work in carpenters rule....so it is a real pain to have to convert 10ths and 100ths of a foot to inches. Metric system is seamless...millimetre...centimetre etc works for all.

[@davidjames5727]

So in 20 years they have increased fuel economy 3-4 miles per gallon, sorry I'm not impressed. My 100% stock 2001 LB7 still gets 20-21 on the highway, and I did not pay $60,000+ ... still going strong!

[@PBVader]

First comment, 2:11 timestamp. All diesels will start at 0 degrees with a new battery. Wait till that factory battery has 3 winters under its belt, then plan a cost and power effective replacement.

[@colindmac78]

the mazda in the background looks almost identical to my mothers. same red and i think it's a cx 5 but was a bit hard to tell

[@jmkclrg932]

I hope you enjoyed the vacation. Hopefully some bonus footage of Andre skiing down the slope 🤞

[@paulpalecek9631]

Considering ordering a trail boss with LZO later in ‘23. Never owned a diesel before. Worried about cold weather starting as I live in northern MN. I park outside at night for work, 40 below is not rare. Thoughts?

[@raceneely8185]

Love the videos. This diesel must love elevation. I have a loaded LTZ with the 3.0 and I get only like 22 maybe 24 on highways. I’m kind of disappointed with my mileage.

[@mattcaesar5781]

Try having the l5p. My average is 12.5

[@dspring4723]

Do you have it on Auto 4? If so, put on 2H

[@shawnjordan5712]

Great review. I just put a deposit on an inbound AT4 Duramax here in Colorado . Need to fix that gaper gap with your goggles and helmet though lol

[@hereigoagain5050]

Russians don't feel cold unless it is below -40 :)

[@davidblalock9945]

If I was to buy a modern truck, a murdered out GMC Sierra Denali 1500 diesel with the carbon pro package and 4wd would likely be my build. One of these days I hope dealers offer full bumper to bumper bed liner coating.

[@Allegronaut]

I would've liked Andre to give his opinion on power & drivability of the diesel!

[@arikharrelson6009]

That is 4 mpg better then my 2015 Silverado 1500 Z71 LT mine only got 21.2 mpg when I drove on a 800 mile road trip all highway. My truck has 129,671 miles now and it has the 5.3 with the 6 speed

[@muhammadibnkilab7026]

Is this the new truck you are going to buy after selling the hummer?

[@smarterthanyou2674]

If it was a real vacation I’m thinking he’s still got hummers

[@AUav8r05]

Great looking truck! Love the diesel. Thanks for the good content!

[@joelpierce3940]

I am torn between the diesel and the 6.2. I don’t drive much anymore. I wish I could find a truck, how do you manage.

[@slmjake]

Awesome video! I leased a 1500 diesel and enjoy it. But lots of body roll on what I characterize as too soft a suspension. Any tips on how I might address this on a lease? If I owned it I would do a hellsing sway bar and active suspension but I wonder for a lease if there is a rear shock option that is less costly and wont cause issues on lease turn in? Thanks Andre and all my fellow TFL followers!!

[@cfrank925]

Replace the rancho shocks with Bilstein 5100s. You can get all 4 for $489 from 4 wheel parts online. I hate the body roll as well and this is what I'm doing after watching a few reviews. Ditch the rancho shocks. They are garbage. Still don't know why TFL says they are good when they aren't.

[@slmjake]

@@cfrank925 thanks!

[@RM.....]

I really like the at4 1500 and 2500. But HATE the garbage wax coated frames on them that living in salt country means it’ll be rusting like crazy after a winter or 2. Come on GM.

[@williamstuart5401]

I just looked under a work friends 18 f150 and could not believe the rust . So tell me the truck you drive that salt seems to ignore?

[@bradleyfuller6998]

did not see any def fluid add at all that add to the cost of running the truck

[@MeliorIlle]

Not a GM fan at all but I love this truck.

[@Jonh707]

Is it possible to purchase the Multi-flex tailgate if your truck didn’t originally come with one ?

[@Wootangtw]

Thanks buddy....

[@p6102zrfxe]

Awesome review Andre. Is that Mazda backup vehicle? 😇

[@TheAngryHusky]

I bought this truck a few weeks ago. I have about 1500 miles on it now and I'm averaging high 18's low 19's. I'm actually getting better mileage in the city than on the interstate. I baby it, and drive it slow on the interstate and the mileage is terrible. What the hell is going on?

[@johngaudet6316]

Everything gets much worse mpgs in winter.

[@dspring4723]

If it’s set on auto 4, put it on 2H

[@59BigWalt]

How much DEF was used? Should the DEF be included in the cost per gallon?

[@wesshepard]

Great video

[@728GT]

Just watching this video is making me cold lol

[@xziang]

You didn't put your bobsled in the back? :) So is thst a scratch on the tailgate already? (Right middle portion)

[@evankatz2893]

My Main Man Andre The Russian Flash having a well deserved family get a way All The Best Evan From New City,NY

[@trailertrashtactics]

Can't wait for mine

[@UntitledSpaghetti2]

Have you checked the Duratrac sidewall for the mountain/snowflake symbol yet?

[@SestoElomenTo11]

I don't believe fuel efficiency justifies anything vs. sticker price$$$$$$$$ May be long term it does, but Manufactures/dealers want to take you to the bank right away with a ridiculous sticker price with or without savings, especially on fuel efficiency vehicles like this. Not to mention maintenance needed when servicing vehicle. Nice review! Maybe one with 100,000 miles would be more affordable. :)

[@dieseldrax]

You're making a common mistake and assuming you have to pay that much for the diesel. The diesel option on the AT4 is a $995 option over the 5.3L. Is the 3.0 worth $995 over the 5.3? No doubt about it.

[@blueridge8992]

How does that 25mpg compare to what TFL saw from the F150 and Ram 1500 diesels?

[@roberthoovan4130]

Did they Sell the truck camper with the four

[@CraigSmith568]

Can't get the diesel in a standard cab. What is the weight limit of that tailgate? I could see that thing getting bent like most tailgates and not working.

[@joshszydel8202]

So it doesn't really pay? The cost and the price difference in fuel and maintenance. The wife's 2.7 ecoboost gets that mpg.

[@Tom-zp9bc]

How do you put a tonneau cover on that truck or clamp down a truck tool box?

[@tritchie6272]

Scenic area. Any idea what kind of mpg the gas version gets? Where I live Diesel is more expensive at the pump than gas.That's a shame to because I have heard good things about them. And I do think that's a good looking truck. If you can you might consider getting a topper that will interchange on other halftones for times like this. If you can figure out what bed size you usually end up with that might help protect your stuff abit more.

[@RedWingsninetyone]

The fuel efficiency of diesel over gas generally pays for that difference. When looking at the Colorado/Canyon gas vs diesel, I had done calculations based on fuel prices in my area at the time. Basically, after 30k miles, you're spending more money on fuel owning a gas engine vs a diesel even with the price difference between the two fuels.

[@mercedesornothing8664]

I know trucks are heavy and stuff but how is 25mpg efficient? I had a 2000 Mercedes ML320 that could do that mpg. 20 years later and a smaller engine and a diesel get the same mpg and that is good? I'm confused.

[@daniels2761]

It much higher than a gas powered pickup. And I promise it can tow and haul a bit more than your Mercedes.

[@trailertrashtactics]

Diesels have came a long ways. That thing started up like nothing

[@johnflewellen8656]

Put a Softopper on it!

[@anthonyc1883]

Yeah, let's ruin the looks of another truck! (Although the Baby Yota looks good with its softop). OK, just joking about ruining the looks.

[@johnflewellen8656]

I have one and I really like it, great utility!

[@badgerpa9]

The do not own this truck it is on loan from GM for them to do testing.

[@paulkatelyntoney3219]

Are shutters aftermarket or are they an option?

[@steveknight9254]

Nice hat comrade! That summer day in Yakutsk and NO problem for hearty Russian Bolshevik ! Also wery good MPG maybe better if add wodka antifreeze, engine and driver run better too!

[@dirtyharryville]

Will this engine last 200,000 miles?

[@nickp786]

Would be a great truck if they didn't put a belt you have to pull the transmission to service it.

[@dieseldrax]

Better than having a timing belt!

[@craig3818]

I have this truck I northern Ontario, where the temperature is -30 Celsius, it is terrible, DEF freezes and check engine light comes on and goes into limp mode, Gm doesn't have a fix for it . Do not buy for cold climates

[@gk9417]

I have a 6.2 Denali and was thinking about trading it for a diesel But was scared because of emissions problems in winter I live in Manitoba ✌️🇨🇦

[@fntony4967]

Give that truck to the Canadian guy for a Cold Start Test.

[@michaelhorner4011]

-20 hold my snowmobile ..... just gonna send it :)

[@jesusm2159]

Is the boss supposed to be the competition vs power wagon

[@xaviermcquiston1604]

No, I think the AT4 2500 is

[@brianrice6993]

Gonna do a ike with the at4 load it to max.

[@dannymartel8754]

really cold at 3 degrees 😂😂

[@screddot7074]

Are we there yet?

[@ademali9720]

Salut vous avez des garage bien sur pour quoi vous ne garait pas les voitures à l'intérieur comme sa elle démarre facilement merci