NEW 2023 GMC Sierra 1500 Duramax Diesel vs Ike Gauntlet - The World's Toughest Towing Test!

[@andymac6679]

For whatever its worth, I currently own 4 of these engines from a 2020 SLE and AT4 and a 2001 yukon XL and now a 2023 AT4 with LZO. I have not had any (knock on wood) issues with any of them. My ranches use all cummins for the big towing and will continue to buy this engine whenever we need light duty work done. Really do like the engine and really hope GM doesnt make the same mistake and discontinue the light diesels like RAM and FORD made the mistake of doing.

[@axtran]

Thanks for this feedback, makin' me really want a new AT4 Diesel now!

[@hardr0cker64]

In my honest opinion, I give it 5 years. I think the reason the 3.0 powerstroke was a flop was because people would rather buy the 3.5 ecoboost and not having to deal with the emission compliant stuff you get with owning a diesel.Same goes for the the dodge ecodiesel. The epa is making it harder and harder to own diesel.

[@bartholomausallen883]

For light duty work you can literally buy any of the gasoline engines.

[@abrahamreyes3340]

​@@bartholomausallen883you can use red diesel and get deals on fuel if you work on raches

[@ashleymalone5396]

​@@hardr0cker64and Ford never really marketed the 3.0l Powerstroke. You literally never heard anything about it. From what I know, it was actually a very good engine option. However, GM is doing a better job, and word of mouth is out there. This has been a great seller for GM. I own a 22.5 refresh AT4 LM2. Would I like the power of the LZO? Absolutely. Do I feel I'm lacking anything? Not at all.

[@shrekk5047]

When you were using super cruise climbing the hill the reason it was slowing on you even though you were full throttle is the adaptive distance to the vehicle in front of you was keeping you at the set distance. It won't let you get close with the super cruise on.

[@redracerproductions]

This is what I was thinking too but I’ve never used Super Cruise. Both times they showed the lower speed there were vehicles in front of the truck.

[@ttank1994]

Correct, I know its tough to keep track of every feature in every truck but come on TFL, you have one job! Also I blame the manufacturers, most of these trucks are loaners and the whole point is advertisement for the manufacturers. You would think they would send a rep, or a video, or something and let these guys know how all the features work. Also the braking. I have a 2021 silverado and I have noticed it will only get aggressive with downshifting if you have to hit your brakes repeatedly. Not sure exactly how it works, maybe some algorithm to guess brake temp or something but if you need to hit your brakes repeatedly in tow haul my truck will all the sudden get super aggressive with downshifting. I wouldn't call having to hit your brakes 4 times in 8 miles on a 7% grade anything close to excessive. These guys are forced to nit pick, trucks are so good these days they have to really stretch to find supposed issues.

[@terryhicks694]

This is the comment I was about to post

[@kwmiked]

Also not knowing the gear its in going down, was probably in 5th or 4th with those 3.23 gears, so if it down shifted 1 more time it would've been to low of gear and would've went past rev limit. These should have 3.42 option without max tow. I don't care for 3.23. I can't even add the Max Tow if I build one which is Bullshit!

[@Buuboi214]

Same concept with the 18 wheelers. If you have cruise control on it keeps you at a set distance unless you have it off you can get closer.

[@Reinbold1500]

I just ran the "Ike Gauntlet" a couple of weeks ago, hauling my 21ft, aprox. 4200lb bumper pull camper. I have the silverado LT crew cab with the LZ0 Duramax. Going down, I had the exhaust brake on and used the manual mode shifter. I kept RPMs around 3000 and it was so aggressive, it slowed me below the speed limit. On the way up, foot to the floor, I could maintain 65mph the entire climb. Amazing little diesel.

[@joeyoung3319]

Highway Mileage over the length of your trip?

[@bushtruck]

So what you're saying is the computer drives the truck, if you can have your foot to the floor climbing a hill with a trailer, back in the day that would have blown the truck up....Not a fan of how the computers drive these things now

[@elijahcavin2408]

​@@bushtruckBetter engineering is bad? I like my old trucks but you did have to watch temps to keep the motor and trans from disintegrating, it's nice to not have to do that as much when you're spending this kind of money.

[@Derek-pd4fc]

@@bushtruck Back in the day diesels had such low power that there were no worries about EGT temps etc. You obviously haven't driven one of these so your opinion means nothing.

[@chipchip48]

​@@Derek-pd4fcold Naturally aspirated diesel all ran around 15:1 AFRS to try and squeeze out as much power as possible which is incredibly rich compared to modern turbo diesels, so while you may have not been monitoring your egts they certainly wouldn't have been "drastically" lower then todays trucks, your EMP would have been drastically lower then todays trucks but theres no free breakfast when it comes to making KWs

[@BTBRVReviews]

Hey guys! I love that you did this video! The ROAMER 1 is an amazing Overland RV! It weights over a thousands LBs less than the PAUSE Ive been reviewing and I was told it tows much better with a 1/2 ton. I'm glad you confirmed this.

[@Mikehood96]

Loved the input. Thank you for being honest it helps a lot of younger people learn something important.

[@MrTruckTV]

Thanks

[@lewiswatchorn7239]

If you guys read the literature from the factory, the transmission is designed to grade shift with cruise enabled-set your cruise speed and it will grade shift more aggressively to maintain your set speed. You basically did the test opposite of what you should have done-should have used cruise going downhill and manually driven uphill because cruise uses the set following distance for safety and vehicles in front of you slowed you down. I usually enjoy watching the Ike’s but you both screwed the pooch on this one.

[@3.0dmax]

^^^ 100% this comment ^^^ I have a 2020 LM2 and I think the engine braking is a bit weak. I keep searching for videos of how the LZ0 compares since GM has done some turbo tuning. I hate to be a jerk about it, but every video so far has been completely wrong. The computer controls the exhaust/engine braking. Cruise control isn't *required* but it certainly is easier that way. If you step on the brake enough to activate the brake light switch, it will think you're trying to slow down, it won't happen, and it will start commanding engine braking. Tapping the brake to slow down 1 MPH and then letting off does absolutely nothing other than putting some heat into the rotors.

[@saisr1]

Not the first time they have messed up with the 3.0 Duramax. Weird thing is they have acknowledged this error in previous tests in the comments but they continue to make the same mistake 🥴

[@hehateme2812]

Redo the test and use cruise control for the exhaust break to actually work 🤦🏼‍♂️

[@jeffreff2000]

You guys are correct that the computer will utilize the exhaust brake and grade braking more effectively but the reason TFL doesn’t usually use cruise control on the downhill is because even though the computer would grade shift and apply the exhaust brake it would also apply the regular brakes as required and Andre would have no way of knowing how many brake applications were applied. I suppose the trail vehicle could monitor the brake lights and count how many times they light up. 🤷🏼‍♂️ TFL also always says they want to test the vehicles as supplied and not fidget with all the different available features.

[@jkheslekrants]

Sure hope the TFL Fellas see your specific comment. Many on this particular one are great but yours is the best. We all understand why they do the test the way they do but they would be better off operating the truck as designed. Not understanding how GM programs their grade shifting/braking as well as not understanding how the adaptive cruise works and penalizing them for it in their ratings... Insert eye roll here. Heck my old 2015 Yukon Denali would need no break applications going down fully laden cause id use Tow Haul mode and my adaptive cruise control. Truck would take care of all it on its own. The 2024 will do the same +++

[@itgoesfast2722]

155k for that trailer and you have to manually crank it up off your truck ! 😂

[@rickreese5794]

🤡🌎💯🌈🤷🏿‍♂️😝🤪🥵

[@brandonmcfarland5200]

That's A Lot Of Money For The Camper.

[@chrisgottagoat]

That much I want it to set itself up and cook breakfast

[@nickfruge5639]

“bUt iTs OfFRoAd caPaBle”

[@chrisguillen1495]

@@nickfruge5639 KAPABLEHHHH

[@jumpsmcgee]

mr. truck's lost a lot of weight. Looks great

[@MrTruckTV]

Thanks a bunch

[@that.schamp]

I'd love to see a comparison of 1500's with the Duramax and the two different axle ratios. The fuel economy is the big question: How much of a hit does that 3.73 give you, with and without a load?

[@jeffgross500]

I would like this test as well. There is no information on the comparison.

[@MattN03]

I'd love to see this too!

[@andyjackson7475]

You have the adaptive cruise control on and set at 50 or 59, as shown at 20:46 on the video. It was sensing the truck in front of you, so it was slowing down!

[@coachvonyo]

I understand your all's take on grade shifting but honestly the way this one is programmed is ideal to me. I don't want it programmed from the factory to shoot to redline everytime I brake in tow haul. But if you want or need it that extreme manual shift mode will get it done.

[@billmonroe7328]

Agree completely. And they put the fancy floppy paddle shifters on the steering wheel to make that easier. TLC tests this way to be consistent, I get it, but I would rather shift myself too.

[@trentwills9786]

Agreed! They are pushing the suppliers to redline it to slow down which can be very irritating if you do not need it to do so… this is a pretty extreme grade and length on average you don’t need it to perform one or less brake application. Really hope they stop pushing so hard on brake applications.

[@peytonschuldt1045]

Also agreed. I would rather have the wear on my brakes than my drive line components for overall reliability. Fair trade off to me.

[@msmith8564]

With my truck in tow haul with the exhaust break it does really well if you use cruise control for down hill.

[@trentwills9786]

@@msmith8564 believe that’s because nowadays cruise control also applies slight braking. I’m not saying the exhaust brake doesn’t do anything by any means… I’m just saying it doesn’t do what people expect usually. I’m completely satisfied with how it works.

[@79champions]

I tow a 7000 lb travel trailer with my 3.0 a lot. I went over hogback hill in northern PA, down about a 6% grade or so. Didn't have to touch my brakes once. Smooth as silk and no crazy high redline reving either.

[@michaelmcmillan2119]

I just got one too I pull campers a lot and curious hiw dud it pull up hills? I usually tow with a 5.3 and good but hoping thus is a little better

[@79champions]

@michaelmcmillan2119 Sorry man just saw this. I towed my same camper with my dad's 2018 5.3 a few times. I'd definitely say the 3.0 pulled harder with less rpms up hills for sure. Not that the 5.3 is weak at all, but I sometimes felt it was really stressing to pull up steeper grades. That 3.0, no such concern.

[@BennyTempino5]

How’s your mpg on those trips pulling

[@wesshepard]

Another great morning waking up to Andre and Mr. Truck!

[@MrTruckTV]

Thanks

[@impala-wf2sd]

I have a 21 crewcab Z71 RST standard bed 3.0 .... average 30mpg & 700 miles to a tank. [Highway miles) ... zero issues so far at 46,000 miles. I paid 52k for it & love it. D.e.f usage is minimal & not burning oil. Low end torque is amazing and super quiet on the highway. Smooth 10spd trans & great throttle response. I plan on purchasing the yukon with this 3.0 for my wife. I would recommend the baby duramax to anyone in the market for a new truck/suv

[@coldnorthAK]

Picked my z71 3L LZO from the dealer last week. So far I love it

[@bearatts]

Good for Kent on keeping up his weight loss journey! Looks like a completely different man today. Good for you sir!

[@MrTruckTV]

Thank you

[@bryanitz8401]

What a gorgeous truck!! The AT4 with this powertrain is my dream vehicle! I honestly didn’t recognize Mr. Truck!! You look 20 years younger!!! Wow!!

[@shanebrown2963]

I would of bought the 3.0 LZ0 if it would of had more payload. Instead I just picked up its big brother duramax. 3.0 duramax is by far the best engine option in the half ton segment!

[@Pantelifts10]

I agree and same here. Needed more payload and towing

[@scarhart53]

Would of? You mean Wood of? Like wood of mahogany, wood of oak....?

[@jordanlongstreet3057]

@@scarhart53nah like wood of birch as in dont be a birch and quit pining about peoples shitty grammar. Spruce up. Be an oak not a daisy. Its not aspen too much is it?

[@slmjake]

I agree. This truck with a 2300 pound payload would be the ultimate. My powerboost is a great truck but with 1360 pounds of payload it is very limited

[@ryanhessler8966]

You can tell Mr. Truck likes this truck because at almost 3 inches of squat with any other truck, he'd be having a heart attack

[@jghall00]

Not sure why. These vehicles have a max tongue weight before a WDH is required. That will put weight back on the front axle and reduce the squat.

[@MrTruckTV]

It's OK, I'm taking my baby aspirin

[@bringyourwoodscrews]

Only if it were an HD truck

[@jacehiggs3637]

Soooooo true. Funny seeing each of their own bias when they seep theough

[@samueldavis5895]

3 inches is nothing lol.

[@bhouse4322]

If the vehicle has a diesel engine, exhaust braking is automatically activated when Tow/Haul Mode is selected. The system will command downshifts and use the turbocharger on the engine to reduce vehicle speed when the brake is applied. The normal tow/haul shift pattern will return once the vehicle is on a low grade or when the accelerator pedal is pressed. This is straight out the manual. That might be why you didn't feel the exhaust breaking. Just tap the break on a grade.

[@Davidk.p4]

Chevy exhaust brakes are complete garbage, people don’t buy a truck like this to tow shit

[@tigermanmccool4037]

I bought a 2 wheel drive with the 3.0 ....it was $53.935 before tax tag , I love it & getting good mileage per gallon

[@RScottPR]

Gentlemen, the downhill assist feature works best with the cruise on. USE THE CRUISE! Set it at 55 and you’ll see results.

[@duramaxadventures5832]

because gm USES THE WHEEL BRAKES. even on models without adaptive cruise.

[@ttank1994]

@@duramaxadventures5832 SO??? As long as they don't get burned up who cares?

[@edwardpate6128]

No changes to the oil pump drive belt from the LM2, it is just that long term evaluations of the test fleet showing minimal to no wear prompted them to change the service interval from 150K to 200K.

[@justinborysenko3885]

After watching “Big Truck RV” review the same truck and same trailer and say it was “dangerous” driving on flatland in TX it was great to see what y’all said.

[@Bradimus1]

I just watched that. It's a silly video saying it's not enough truck when a tall trailer is swaying in a 35 mph crosswind. Completely illogical.

[@yissibiiyte]

That video was ridiculous. He wants a massive trailer to not move an inch when being buffeted by strong winds. That's not the truck's fault it's the laws of physics

[@aussiek2000]

He just wants everyone to buy a 450

[@matthewanderson9912]

I think his was a different trailer but still, he’s a massive Ford fanboy too. He makes good points sometimes but I stopped taking him serious on his takes on his GMC when he complained about having to push the brake to start the truck. That was more than ridiculous. I do agree that 1500s are not the best option for towing enclosed type trailers though. Especially at interstate speeds.

[@markflaugh2293]

He tested the Pause trailer, similar but not the same trailer.

[@dylanluhowy]

Looking forward to seeing you do the 6.6 gas with the 10-speed.

[@BigInjun05]

Buy a 7.3

[@aussiek2000]

Sell it and buy a dmax

[@BigInjun05]

@@aussiek2000 only need that if you have a cdl

[@B-rad303]

Why would anyone get the 6.6 gas? Absolutely horrible mileage. Loaded or unloaded.

[@dylanluhowy]

@@B-rad303 I’m getting 12 city and 16 highway unloaded which I don’t consider horrible 🤷‍♂️

[@christophercassidy1075]

My favorite truck with wider tire and thicker side wall, and upgraded shocks.

[@fflowwiththego]

You’ve acknowledged this on every gm diesel video, the exhaust brake is integrated with the cruise control. FREAKING USE THE CRUISE CONTROL! it will grade shift more aggressively and apply strong exhaust braking under cruise control. Don’t knock it for not working well when you’re not using it the way it was designed.

[@drywashme]

It's true...seems to be the way it was designed to work from our towing experience.

[@stephenmcdonnell8145]

I’d like to see Andre do a second run downhill where he manually select the gears for the descent.

[@kabloosh699]

Definitely the best engine to get in these trucks.

[@desertfresh3740]

"It wants to go slower for some reason" The box truck in front of you.

[@andrewshoe6832]

Thank you.. seems obvious that the following distance was limiting speed.

[@PistonAvatarGuy]

At 22:18 they weren't behind the box truck.This engine lacks the power to climb this hill any faster than it did here.

[@desertfresh3740]

@@PistonAvatarGuy it's behind the white SUV... And you don't just magically shoot up to 60 instantly.

[@PistonAvatarGuy]

@@desertfresh3740 The white SUV was pulling ahead, watch longer.

[@desertfresh3740]

@@PistonAvatarGuy and the truck was accelerating. It doesn't have a ton of power but it still takes time to get up to speed. They were doing 52 behind the box and were up to 56 or so after getting behind the white SUV

[@motofunk1]

One consideration with Super Cruise that might have been effecting the uphill speed is the follow distance. GM's active cruise control settings are very sensitive to the follow distance settings, super cruise I assume uses the same logic. While the truck did appear maxed out on uphill speed, there were a few times in the video where there was a vehicle in front that may have limited the speed by tripping the follow distance minimum. With Active Cruise GM has an indicator of a vehicle in green that shows up when the radar picks up a vehicle in the distance range. Again there were times in the video when that indicator was on and you were talking about vehicle speed being low. And not sure if it was an edit, but you had an automatic lane change denied at one point when you were already in the fast lane. If that was real and not an edit, it shows how not smart the Super Cruise system is. While it denied itself a lane change to overtake a slower vehicle due to a concrete wall and no lane available, it also thought it was a good idea to recommend a left lane overtake when there was no lane. Maybe you hit the indicator, but I believe that was an Automatic Lane Change rather than an On Demand Lane Change.

[@stahlight]

You are correct. I had super cruise in a Cadillac CT6 and the truck's supercruise was definitely speed locked to the truck in front at one point.

[@cbruno12180]

The reason super cruise was slowing down u two genuineness is because it was following the lead car ahead of u lol 😂

[@DanielSon69]

Your spelling indicates that you too are a genuineness 🙄

[@JohnDoe-nz6bk]

@@DanielSon69 does it make him wrong though???

[@Matts000]

I couldn’t believe they don’t no how adaptive cruise control works

[@TheAdamzboyz]

"It doesn't care where your hands are at!" Love that line! 😂

[@james1939-s1c]

Just purchased a 2023 AT4 with the 3.0l Diesel, I love it, I believe it is a better deal than the ultimate. Mine has leather and every option I would want and was 66k, I actually got it at invoice price at my local dealer which I did buy my last 4 trucks from they treat me very well and gave me what I paid for my 2019.

[@ScottAro83]

Damn where?

[@mattbrew11]

@@ScottAro83 its not hard to find deals now

[@duramaxadventures5832]

ultimate and AT4x have completely different interiors and seats in particular.

[@dm-lombo1647]

I always like when Mr Truck is on board

[@MrTruckTV]

Thank you

[@Nscardigno33]

To make the exhaust brakes on these trucks work you have to lightly drag the brake pedal not adding brake pressure just enough for the lights to come on and it will kick down and exhaust brake

[@stevencofran2026]

The exhaust brake On these 3.0’s works the best when you lightly hold your foot on the brake pedal for a few seconds. I think you would have had less brake applications downhill with this method. Thanks for your footage.

[@denisleblanc4506]

A few comments. Even if it has a Jake brake, it's still only a 3l engine. There's only so much it can do. As for the uphill performance, you had Supercruise on and a vehicle in front. It has to maintain the distance you set it at, if the vehicle in front slows to 55 so will you. Plus if you consider the leisurely pace it got to 60, you lost about 4 seconds there which means it only lost about 9 seconds. It would have been interesting to turned Supercruise off and see if you could maintain 60 going up the steepest part of the climb.

[@F450FTW]

It doesn't have a Jake brake, it has an exhaust brake. They are two totally different things.

[@charlesw.9566]

Exactly my thoughts regarding the speed. It sensed that vehicles were too close and limited the distance it would allow the truck to get to that vehicle… which is actually super impressive when pulling a trailer. Most adaptive cruise controls do not account for pulling a trailer and therefor end up getting you in uncomfortable situations. I’m of the belief that the truck could have kept 60, they just would have been tailgating someone to achieve it.

[@denisleblanc4506]

@@angrybeavers1175 Is that so? Compare it to a gas 3l turbo and get back to me.

[@landonwilcox1837]

Set the cruise at 55 on the downhill run and it should down shift quicker and hold you under 60 mph. On the uphill drive adaptive cruise was def holding you back based on that tahoe/yukon you were behind.

[@mar56cos]

GMC needs to put an air suspension on the ultimate trim.

[@jeffswanson3413]

I have to chime in. I purchased a BRAND NEW GMC Sierra with the 3.0 Duramax. Im not happy!!!I just towed a 2022 Rockwood Mini-lite from Omaha to Milwaukee. Here is my experience. 1. The trip was 500 miles, we used 3.75 gallons of def fluid, 46 gallons of diesel fuel and 1 qt of oil? This 500 mile trip cost about $200 or about $.39 per mile. If I had my old Ford F150 3,.5 Ecoboost using regular gas the I would be at about $.30 per mile. How does diesel make sense. 2. Plus! pulling that 22' camper around gas stations looking for the 1 or 2 pumps that have diesel fuel was a pain. The big stations cater almost exclusively to semis and the pumps do not fit the GMC. One fuel Stop I had to goto to 3 gas stations to find 1 with an operation diesel pump, don't know why but again a serious PIA. 3. Between low fuel warnings and Low DEF warnings, I decided this Sierra with only 1,400 miles HAS TO GO. I will take the loss and either get a Sierra with the 6.2 or go back to the 3.5 Eco. MY ADVICE, stay away from the Duramax. I do have a diesel jeep and its way more efficient.

[@Tremor-xu8qo]

I wonder if it would have been more aggressive downhill if the cruise was set at 50mph. I would like to see if that would help

[@shrekk5047]

I have one and yes if you set the cruise it is alot more aggressive when cruise is set, without cruise the exhaust brake is useless.

[@billmonroe7328]

​@@shrekk5047 Exhaust brake works fine if you manually downshift.

[@duramaxadventures5832]

YES.... becake GM uses teh wheel brakes in cruise even if you dont have teh adaptive option.

[@kwmiked]

It's gear ratio, it's to tall for towing. Without knowing what gear it was in, my bet it was in 5th or 4th and if it went down 1 more gear it would've been to low and shot it past redline. U should be able to spec this truck without max tow with 3.42 if u wanted. 3.23s are useless for towing

[@billmonroe7328]

@kwmiked These LZO redline at 5500 RPM when using exhaust brake. With the 10 speeds, the steps are small enough that I would expect if they had gone into manual mode, they could have easily downshifted another gear. I have the NHT 13,000 lb max tow with LZO and 3.42 gears, and in manual mode, I get all kinds of exhause braking or in cruise control, as others mention. I still get 26 to 30 mpg FE at 75 mph with summer fuel when not towing.

[@jko0526]

Love the Banks IDash! It was the first accessory that I bought for my 3.0L

[@terrencejones9817]

They need to be using weight distribution on a trailer that heavy. They also need to use cruise control on the downhill

[@snowphyco]

I’ve found that Chevys tow haul on down hill is never as aggressive as I want it to be. I find myself manually downshifting when going down bigger hills. That said, 2500 in low range with 13k trailer down a sketchy logging road in first gear. I never knew my trailer brakes were completely nonfunctional!

[@jaimeguajardo2294]

I really want to see if the Autostart/Autostop feature on GM trucks really helps. In stop and go traffic, I feel like the restart cost on fuel is greater than the savings provided by the shutoff. Unless I'm stopping at traffic lights for more than a minute, I don't think there's a benefit to the shutoff. I would love a video on this

[@rock-uu7qr]

They don’t do that for economy they do it for emissions

[@philirwin2028]

Bought my 21 gmc denali 1500 Sierra for the 28 to 30 miles per gallon. Love it.

[@tthoutx1]

Did it slow because of the distance auto sensor cruise dropped your speed. During your drive you changed lanes and possibly had other vehicles within range which could have been within sensor range.

[@Wicked_RotF30]

Mr. Truck is the truck authority. Glad to see him with TFL.

[@mbukukanyau]

This generation of GM trucks are easily the best in the business.

[@saisr1]

At 22:21 you see orange on the indicator lf the vehicle in front. Too close to it so it would automatically roll out of the throttle. You can't use an adaptive cruise with vehicles going to slow in front of you and your expect to not slow down. Should have either tested without cruise or done so with no traffic.

[@johndonohoe9807]

Thank you. for doing this test. This, to me, is the best 1/2-ton pickup there is. The diesel is by far the number 1 choice for me, I want one.

[@chadgodfrey4364]

Yep it’s my next truck to Mr Truck

[@MrTruckTV]

Thanks

[@clevejason]

Andre is an authority whenever he’s featured in a video I watch it and agree with him 100% since he’s an an engineer that does his homework. Thanks Andre!

[@mexifry222]

Get off his pee pee bro

[@mexifry222]

He messed this test up using the cruise control incorrectly.

[@JarmelSingsKaraoke]

Happy SATURDAY EVERYONE ✌️ HAVE A BEAUTIFUL DAY....

[@Jamie-cf8tn]

The exhaust break is to prevent a run away situation going down hill. If you do not have the cruise set on any GM Duramax the truck will not know how fast you want to go. With the cruise set and the exhaust break on the truck will keep you from speeding up while going down hill, otherwise you will need to use your break. A light break application and the truck will also down shift.

[@Motorcycledad160]

And this is why the diesels have faded away in the 1/2 ton segment. They just can't keep up with the gas in terms of acceleration. But the fuel mileage was pretty good. Too bad the EPA has killed the diesel with the emission requirements. That truck would have twice the power of it was choked by the DPF, regen, EGR, and having to use DEF. Think I'll still with my gasser. Cheaper and more simple to fix. Great video guys!

[@edwardpate6128]

This truck would have done much better if they had NOT used Supercruise on the way up and had engaged cruise control on the way down which is what will engage the exhaust brake.

[@Motorcycledad160]

@@edwardpate6128 Andre said he had his foot to the floor and had no power left, or was I imagining that? And what kind of engine brake only engages when you are using cruise? That's ridiculous. I am a truck driver, thankfully my big trucks don't work that way.....

[@donhappel9566]

@@Motorcycledad160 problem was the supercruise could detect vehicles in front and since it's all drive-by-wire it wouldn't accelerate despite flooring it. Drive it manually w/o the supercruise engaged and it'll accelerate. I have a lower spec '22 with the earlier LM2 and have towed 8500 lbs over the Sierras and Rockies. Certainly it's not as fast as the big gas motors but hey, I bought a truck to work and I have probably had it floored .001% of the time. 0-60 is all but irrelevant as that will just risk dumping all the junk I'm hauling in the bed over and making a mess. It's no rocket, but it's got plenty of power for regular use as well as towing anything I'd ever want to tow with a 1/2 ton and still manages 30 mpg+ on the highway.

[@Motorcycledad160]

@@donhappel9566 That sounds pretty good, how many miles on it so far?

[@donhappel9566]

@@Motorcycledad160 26K. Will probably hit 30K by the first year (July). Have towed from coast to coast but mostly just use it for my day to day work with an ARE comercial topper, Decked bed-slide, and a bunch of PackOut stuff in the back. maybe 600 lbs on average before other parts for the day's jobs.

[@bboyles]

love the half ton diesels, and the Ram 1500 EcoDiesel can still be had in a 2023 , I just bought one, but it is the final year for Ram's half-ton diesel :(

[@TaigaTurf]

I'd actually love to have an HD with this more fuel efficient yet very powerful, 3.0 duramax.. 495 lb of torque can easily handle the one ton of payload i typically put in it day in / out, without reving like a gasser

[@michaelalbert8474]

5.9 mpg?? Going up that mountain?!?! That is phenomenal!!

[@revgordon91]

Thats an amazing truck. I can't believe the payload capacity with the ultimate and the diesel. I have a 17 platinum reserve 2wd and this truck has more payload. That makes me wonder what the payload is for the sle with the diesel. That truck's too nice for me.

[@RobertWarkentin]

hey guys, you need to gently ride the brake, this will trigger more aggressive downshifting. Works amazing in my 2021 3.0.

[@jaykanngiesser3454]

I’ll take 8:13 and 6.0 mpg uphill all day long. Is this the most frugal truck you have ever tested towing? I would love one, but oh, the price!

[@kohltonclark22]

The Chevy Silverado 1500 can have that engine too. Still expensive, but less than gmc sierra denali

[@HiPlains1]

@@kohltonclark22 Seen some RST's with 6K off with 4X4 for around 53K. IN these times the full sizers are seeing bigger discounts.

[@5JSG]

Gas trucks are giving 4-8 mpg for the same trailer weights. Better to go big boy Diesel.

[@mattm1686]

I currently have a 2016 Chevy Silverado 1500 LT crew cab and this is totally my dream truck when I need to replace it in about 2 to 3 years. Hopefully they don’t get rid of diesel.

[@hayter111]

Is there a reason why you don’t use the manual mode with paddle shifters to get the exhaust brake to be more aggressive?

[@franzvanjulio5523]

Always good to see the two of you getting into trouble, Andrey & Mr. Truck.

[@MrTruckTV]

Thanks

[@gadgetmantwincities]

I wonder if Mr Truck likes that truck🤠

[@MrTruckTV]

What's not to love

[@steveayers3612]

I have the 2022 Yukon xl with the 3.0 and the exhaust brake works like a beast on it I have a 28 foot trailer with t-brake set to 70% but my gear ratio is 3.23 with the 10 speed and and even though the fuel mileage is amazing without load it takes a solid hit with the load. ( 26mpg no load, 10-13 with load,) (also have jumped up a tire size cause you cannot get D or E rated tires in the size gm puts on the Yukon in 18's) . before the tire change was at 28 mpg no load. Honestly I would gladly give up 2-3 mpg to have a. 3.54 or 3.55 gear ratio as I can feel the gap between 1st and 2nd when pulling a load. also I wish GM would have left a solid rear axle in the Yukon, I have the independent front and rear and even though the ride is amazing it takes a hit on payload.

[@Benalan613]

155k for a travel trailer 😂

[@86steelrain]

But its... "overland" 😅

[@ryansheard8092]

You clearly didn't watch the video on the review of this trailer. If you had you'd better understand the cost.

[@garysarratt1]

It may be nice, but not worth 2 new trucks.

[@screddot7074]

This trailer is designed to make new trucks look cheap.

[@pryme2013]

Unless you’re retired and using it all the time, a travel trailer is silly. Your avg person uses it a couple times a year max. Just rent one once or twice a year. No maintenance required or storage fees which many people need.

[@goingdownthetube]

I own an 1500 AT4 with Duramax and it is an outstanding combination. 25 to 27 mpg average . My only annoyance is they hide the lights and drive mode button behind steering wheel. Much better when it was vertical to the left. 👍

[@SurelyYewJest]

Never did I think GM would be the only remaining half-ton diesel. Of course, I was also surprised how unpopular Ford's 3.0 Power Stroke V6 ended up being.

[@jacehiggs3637]

Ford messed up badly by only optioning it in the lariat and above, priced right out of the half ton market. Made it as much as a powerstroke 250

[@jellyfrosh9102]

you could buy a 6.7L for the same price as a 3.0L, and ford did no marketing for the 3.0L

[@patrickburgmeier7902]

I'm interested in what position you had the engine brake set at? Semi's usually have position 1, 2, and 3. Position 1, is 2 cylinders braking, position 2 is 4 cylinders braking, and position 3 is all 6 cylinders braking. But you need to preselect which position you want manually, before you start driving. With position 3 giving you the most aggressive braking and aggressive downshifting. By the sound of it, and the amount of engine rpm, I'm thinking that it was set to position 1. Position 3 would have downshifted and engine rpm would have kept the engine to around 4000. Mr. Truck is correct. Most new Semi's tach out around 1800 to 2000 rpm. The diesel engine will develop as much horsepower braking as it does pulling. Also if you have the engine brake in the right position, the engine should braking the vehicle to almost a complete stop. I mean almost a complete stop. Not stop it.

[@trentwills9786]

The “exhaust brake” is actually used by the vanes in the turbo. These smaller trucks especially the 1/2 ton isn’t going to be near as effective as a semi or even 3/4 or 1 ton trucks. On this truck there is only tow haul mode that activates the exhaust brake. That’s the only way to have it active

[@captainron7904]

All these $80k + trucks will just sit at dealers nobody can afford these with interest rates what they are

[@marksullivan8200]

Wow over 12 mpg I was expecting high 9s or low 10s while towing that camper usually I'm a 2500 guy but a straight 6 done right as demonstrated definitely has my full attention I think something similar for my wife's next vehicle as I'll likely stick to my hd

[@drywashme]

We tow a 6800 lb (scaled weight) trailer and our 3000 mile average is 12 mpg with a 2022 LM2. 90% mountain towing in California, Nevada, Utah and Arizona and exhaust brake works best with cruise set. To slow more aggressively, continue to 'reduce' the set cruise speed while still engaged; just tap (roll) it slower. Donner Pass, CA no brakes needed. I have noticed the stop lights are activated when exhaust brake kicks in. Therefore, are the service brakes also being used or is this just a vehicle slowing warning for drivers to the rear? Solo driving we have recorded 30-31 mpg many times. We've had 2, 2500 Silverado Duramax (2017 & 2021) and agreed a lot more truck but nowhere near this kind of MPG.

[@Marti3150]

Hey guys can you please run this truck down the hill in super cruise ? I’d personally like to see if super cruise would allow for more aggressive grade shifting and exhaust brake application. I know you want to keep the Ike gauntlets similar for each test however if a manufacturer has an option that allows for easier towing, why not test it out?

[@billmonroe7328]

Why in the world does nobody understand to manually downshift with exhaust brake on?

[@off-roadingcars]

I’m glad you brought Mr. Truck with you

[@MrTruckTV]

Thanks

[@Carlo-_]

Super cruise was hindering you on the up hill. Should not have turned it on. It was preventing from getting too close to vehicles in front of you…. That’s why it wouldn’t go any faster.

[@jtlong8383]

Per the manual, the exhaust brake works while in Tow/Haul mode when you apply the brakes, not before.

[@Cloud30000]

If they can bump the GVWR by 200 lbs, this thing would go perfect with a hybrid motor and built in 7200w generator.

[@scottpowell6710]

Great to see Mr. Truck again !

[@MrTruckTV]

Thank you

[@chop2093]

I had this same truck but in a lower trim for about 6 months. I like the truck at low speed and driving around town but it just felt really slow in passing situations and accelerating…I just didn’t feel comfortable passing on a two lane road unless there was just a ton of passing room. Traded it for a 2.7 ecoboost and the ecoboost feels miles quicker ….

[@K-bob_45]

Crazy that the 3.0 can feel sluggish considering my 6.2, with near identical HP and torque, feels very quick. You’d think a diesel with a ~5k redline would feel pretty peppy

[@chop2093]

@@K-bob_45 the 3.0 was peppy from A stop but once it was moving at highway speed and tried to accelerate hard it just runs out of steam on the top end …the 6.2 def has more top end padding power and would smoke the 3.0 from a 50-90 roll.

[@markmonroe7330]

@@K-bob_45 that is the challenge with small/tiny displacement. The “numbers” look good but they just don’t perform the same.

[@jghall00]

​@@K-bob_45 the diesel is down on HP compared to the 6.2, it's basically making less torque at high RPM, plus it is likely geared taller. Diesels aren't so good for max acceleration.

[@tnebbie3230]

I think it prob does better if you get it with the lower gear ratio axle

[@screddot7074]

Time for a TFL Work Truck channel. This trailer is designed to make new trucks look cheap.

[@steveknight9254]

12.3 mpg is as good as it gets what did it calculate out at based on your standard technique?

[@Scottsfitjourney]

That can’t be right

[@801Pizzle]

Mr. Truck has been hitting the gym. Looking good Mr. T!

[@djp1234]

Is that the same engine that has the rubber timing belt behind the engine, so you have to remove the transmission to replace it?

[@williamumbach592]

Every 200K miles

[@atodaso1668]

@@williamumbach592 Great design though right?

[@richardradawetz8788]

Oil pump belt. Timing is gears

[@richardradawetz8788]

Oil pump drive

[@IronmanV5]

Always like seeing Mr. Truck

[@MrTruckTV]

Thank you

[@ML-lg4ky]

How soon before this engine is discontinued?

[@justincrook8257]

Probably soon. When EPA continues to choke manufacturers installing diesels.. love my 2.8L minimax..

[@nabatron21]

Hopefully never

[@BennyTempino5]

@@justincrook8257well hopefully the EPA is eliminated altogether then there wouldn’t be that problem

[@perryjudson9141]

It’s just crazy seeing Mr Truck without a beard especially when it’s snowing outside in the video

[@Johnny_Kanuk]

Just curious if you set the cruise to 50mph if the truck would then try to maintain that speed better. It's strange that the Jake Brake doesn't have a button. Also, you really can't hear it. Could you feel it? There isn't even an indicator in the dash to tell you it's on.

[@chucknSC]

First- it’s not a Jake brake, it’s an exhaust turbo vane restrictor. A Jake brake uses engine exhaust valves. Second- on my 3 Duramaxes, I think that setting the cruise control forces maximum exhaust braking when the set speed is exceeded and no gas pedal is used ( ie the truck knows the load is “pushing “ the truck over the desired speed). Without having a cruise speed value, the truck has no way to know what speed to hold with exhaust braking. Every time he puts on the brakes, it disengages the cruise setting.

[@ryansheard8092]

Shouldn't need to. The transmission and truck brains should work together and hold at the speed you were at. Problem with cruise is it may use the brakes too much.

[@Johnny_Kanuk]

@Chuck Neil I drive long haul. To me, it's a Jake Brake, hence why I call it that. Like we all call tissue Kleenex no matter the brand. I'd be curious if they redo that downhill using the cruise if there would be a difference. It all seems automatic on that truck.

[@kylebutler7142]

Andre and Mr Truck don't want to sit on 50 all the way down the Ike! It about doing the speed limit or close to it.

[@edwardpate6128]

@@chucknSC That has been my experience as well, it really seems to be keyed to work with the cruise control.

[@dcving1two3]

I see you had issues with the Exhaust braking. I've learned to control the exhaust brake by how long you hold the brake down. When you initially hold it, the truck will downshift and rpm's will kick up. If you keep holding it, it will downshift again and increase rpm's. Once you test it out, you will see how easy it is.

[@mattmstng8]

Please test the 5.0 f150. It would be nice to see how it stacks up against the more expensive ecoboost and even this diesel model!

[@charlesw.9566]

They have a 5.0 Tremor Ike Test that they posted recently. They compared it to a 3.5 Ecoboost HO. It’s the same 5.0 and 10 speed as any other F150, just in a tremor. Only difference would be larger tires and the dual exhaust could help it breathe a bit. It’s a great video, the 5.0 was impressive.

[@mattmstng8]

@@charlesw.9566 thanks!

[@jhviding]

It was much better than this Denali.

[@garys2157]

The 3.5 EcoBoost is really not more expensive, depending on trim it's pretty much the same, Ford does rank it higher on most lists, the Powerboost would be the most expensive upgrade and that is the same engine that knocked the F150 diesel out of the lineup.

[@donhappel9566]

@@garys2157 which is sad really as the Powerboost's hybrid only really helps around town and is very expensive. As a Ford guy at heart I wanted an F150 for my next truck but ended up buying an LM2 '22 cheby last July since it gets massively better economy than the Ford for the mostly highway miles I put on. 26K miles so far and even with the added aero drag of the shell (it sticks out quite a bit beyond the cab and cost me a couple mpgs) and about 600-700 lbs of weight daily I can still easily hit 30 mpg if I stick to the speed limit. The 10 spd though is starting to give me worries with what feels like excess lash in the driveline. GM...where quality is number...er...well, it's on the list somewhere!😆

[@nighthawktheflyingspur]

Glad that grade shifting and engine brake is not too aggressive. Last thing I want going down the hill is give it gas just because engine brake is too aggressive.

[@duggydo]

This engine is the best thing since sliced bread.

[@atodaso1668]

No its not.

[@duggydo]

@@atodaso1668 care to explain why it's not?

[@atodaso1668]

@@duggydo This engine will not hold up or be reliable, if you have one good luck. Sell it before the warranty expires.

[@duggydo]

@@atodaso1668 How do you know? Any specific design flaws?

[@porcupinepete8110]

I realize this was a driving review, but Im disappointed you did not mention the reported high DEF consumption and high oil consumption that other reviewers have mentioned making the small advantage of higher MPG get totally wiped out when factoring the other costs plus the inconvenience of constantly having to top up those fluids. Unless the other reviews were not accurate. Good job though on these videos overall.

[@pabo8080]

I ve heard so many DEF horror stories that if I were in the market for a truck i'd get gas

[@Sparkystacoma]

This is an ideal truck for a small Tune. Better shift control and a bit more power. Than it'd be a perfect truck

[@bigdaddysshop8180]

No tunes from Banks as of yet. I've had mine for a year and a half and the regular modes in the truck are great. I run mine on sport tune most of the time.

[@dannyellrich5827]

The LM2 Duramax you tested was faster up the mountain and that was with a 7600 pound trailer vs. this 7000 pound trailer.

[@kokocostanza2036]

As others have said, the Super Cruise was holding it back. Since it won't get closer than a set distance to other cars, it was cutting off speed, even at full throttle. Right before 22 minutes in, you can see the brake lights come on for a second. If the Super Cruise was off I'm sure it would have gotten a lot closer to 8 minutes.

[@dannyellrich5827]

@Koko Costanza watch the video again, he held it to floor while super cruise was on. The power wasn't cut back at all.

[@kokocostanza2036]

@Danny Ellrich I understand that, but if the system has the cruise distance/auto braking set to X distance and can't safely change lanes, it's not going to let you go faster than what the car in front of you is doing, no matter how much throttle you're giving it.

[@JesseLJohnson]

@@dannyellrich5827 Even with WOT with the cruise on it won't let you get closer then you have the gap set to. So if you have somebody in front of you, you cannot get closer then whatever the gap is set to doesn't matter if you are on throttle or not

[@motofunk1]

Wish you had done a downhill test with Super Cruise and one with Manual Shifting. Also, while you are staying within the speed limits you might be missing some of the programing done by GM. If you run a 60 mph test, braking at 70mph, you might find downshifts were programed that you do not reach in your standard testing. Consider adding more tests.

[@windzer]

towing the world's most unaffordable trailer lol

[@atodaso1668]

I am curious to see how many they sell to private people. I am sure some will be bought by "charities" and "non profits"

[@poppyneese1811]

I thought it was Mr. Truck’s younger handsomer little brother, nope it’s The Mr. Truck and looking good, I’m battling the weight battle now, just starting and a long way to go! These guys are just such a good team!

[@MrTruckTV]

Thanks

[@Matts000]

These guys need to look up the definition of adaptive cruise control, which is built into blue cruise😂