Blown Away: I towed 7,000 lbs to see REAL MPG with 3.0 Duramax ZR2

[@MOHAWKAUTO]

To the gentleman I met tonight, it was great chatting with you and please reach out so we can exchange info!

[@jtarman70]

I owned gas burners for 25 years. 3 years ago I bought a 2021 GMC 1500 Duramax 3.0 X31 with the Elevation Package (No chrome, Solid paint, black wheels) and I will NEVER go back to a gas burner. The trucks engine and drive train are Superior to any of GM's gas burners in every aspect of the game! I hate lugging hills with a load, this 3.0 don't lug! In fact you can feel the power being transferred to the road and it is impressive! My wife knows nothing about trucks and when she rode in it the first time she immediately knew it was better than the other gas burner trucks I had owned, she even said she wanted a Yukon with the 3.0 Duramax! She don't even know....and somehow she know's!!! You can feel, see and hear the difference folks!

[@josels1292]

I got a 2023 Silverado 3.0 not for the MPG but just because I like how the diesel drives more than the gas.

[@MOHAWKAUTO]

I love the way it drives and how it seems smoother and more effortless especially when going up hills.

[@rosskirkes5470]

I have a 2023 AT4 LZ0 and am extremely happy with towing performance. After decades of hauling heavy loads, I can say that the wind resistance is a much bigger factor than the weight. The camper you pulled is indeed a brick. I can also say from much experience that a strong crosswind actually hurts mileage more than a direct headwind. Lots of guys will argue this point, but it's a fact. Aerodynamics matter more than most people realize. I've pulled up to 10,000 with my LZ0 and love it. Empty mileage is awesome! For anything bigger than 10K, I use my F350 6.7L Powerstroke, but for the light loads, I love the 3.0 LZ0.

[@fieroshaw]

I agree that a side wind has more effect and the math proves it out by calculating the area of the trailer side vs the front.

[@richbarrett]

Agreed. I wish RV manufacturers understood this. Aerodynamics is way more important than weight. Towing a boat is way easier than towing a box-shaped trailer.

[@seagullsbtn]

Correct, the Frontal area is the issue not weight. Proven for me by towing the same load (my off roader) using a steel trailer and an aluminum one that is 1000lbs lighter. Wind direction matters as well. But its not just mpg that matters is Cost per 1000 miles. Factor in the cost of Def on top of diesel and higher service costs and the V8 saves my wallet every time.

[@dkswrld278]

I have a 2023 GMC 1500 slt with the 3.0. I’ve towed my vehicle and it did great. I was ranging from 14 mpg uphill and then 20 mpg regular roads. It’s a great truck and combo. I’d just plan on doing a trans cooler.

[@BearPapa49]

I love the 3.0 but I needed to tow in the range of 18,000 . I’m retired and soon will buy another toy box . I bought first a 2024 Chev 2500 Diesel Duramax LT Z71 . I love it . Don’t know yet mileage towing but I do know I won’t struggle with weight towing . I still Iove the 3.0 as well. Great design and technology

[@MOHAWKAUTO]

With that weight you’d absolutely need to get a 2500. I think you chose a great truck though.

[@edwardpate6128]

If you want to tow 18K I'd say you are looking at a 1 ton 3500, probably a dually.

[@WisconsinDIYGuy]

I'd weigh yourself at a truck stop to see what weight is on your rear axle compared to max listed. That's a heavy trailer.

[@towm8tr]

I have a AT4 with the LZO and tow a 7,000lb travel trailer in California. I average between 12-13mpg while towing. Worst mileage I’ve had was 10.5 mpg towing steep grades. California has a wide mix of terrain from flat to very steep almost everywhere you go. Unladen I get 25-27mpg hwy and 21-23 combined. I’m not easy on the throttle either.

[@MOHAWKAUTO]

That’s a lot better economy than you’ll get from the gas engines

[@ryanvegas777]

14:10 exactly correct!! Thanks for touching on this!! People don’t understand that if you buy a truck built for offroad it isn’t going to tow like a truck with a “heavy duty towing” package, etc…thanks for that

[@MOHAWKAUTO]

You’re welcome! I want to make sure that those that may not know, understand the compromise. It’s not necessarily a bad thing, just something to be mindful of.

[@ryanvegas777]

@@MOHAWKAUTO agreed, unfortunately I’ve seen it way too many times people going on their truck manufacturers website, finding a 2023 crew cab 4x4 short bed f-350 and assume OH, IT SAYS THIS TYPE CAN TOW 30k! When in all reality a Tremor package alone knocks this down severely. Payload, max tongue weight and even max trailer weigh are substantially different when these “packages” are added, meant for towing, offroad or otherwise. So many newbies don’t get this or think to look to begin with! Thanks again. I am subscribed to you now

[@MOHAWKAUTO]

@@ryanvegas777 you’re spot on and thank you so much for the sub!

[@rsbreeze]

Towing and offroad = 2500HD ZR2 Duramax

[@MOHAWKAUTO]

@@rsbreeze that’ll still have (should have) softer springs than the non ZR2 2500. The ZR2 2500 looks really nice too

[@MiddleGroundGarage]

Had a 15 high country 6.2 that got 10 mpg towing my 5800 lb camper. My lm2 3.0 gets 16.5 and didn't drop lifters and beat the lobes off the cam so I'm saying the 3.0 is superior towing .

[@MOHAWKAUTO]

I think we’ll see the 3.0 become a legendary motor

[@macandjacks241]

I have a 22 Sierra SLT 1500 with the 3.0. I ordered it with the max tow package so it has minimal squat when hooked up to our trailer. Took it on a road trip last fall from north Idaho, through Montana, down through southern Idaho and back. Total trip was a little over 1,400 miles. Towed our Jayco 22RBS travel trailer. It's about 7,000 lbs. Total MPG for the whole trip was 16.8. The truck did awesome. I was very happy with it.

[@MOHAWKAUTO]

That’s impressive mileage!

[@BloodiedYetUnbowed]

I have the same truck. It’s a 2022 GMC SLT with 3.0 and max trailering package. I went with the 6.5 foot bed rather than the short bed. To date I’ve only towed a max of 3k pounds with it and not very far. Looking forward to testing out it’s true ability next year where I should be towing in excess of 10k pounds with it

[@slmjake]

Great mpgs! Does it have the 3.73 axles?

[@marcelo403polo2]

Crap. I should get this babymax one. I really regret buying AT4X HD Duramax. Horrible mileage empty. 12mpg city and 14 highway. 250 miles less on full tank of fuel vs my old Denali HD LML Duramax. I don't get it. As per dealer all is good within their specs

[@tonypetrie6275]

Did you use weight distribution hitch for this trip?

[@jayscott5477]

My LZO Chevy tows like a dream at 65MPH...MAX!! Distributing hitch keeps it level which is a must...love my truck! Way better than my ECO diesel RAM!

[@MOHAWKAUTO]

Distribution hitches make an enormous difference.

[@shadowsabre194]

Does your truck have the Max trailering package?

[@jayscott5477]

No....but honestly it doesn't seem to make a huge difference. the distribution hitch keeps me level and it tows like a dream. Effortlessly....and the exhaust brake works great.​@@shadowsabre194

[@johndennison6093]

How much does your camper weigh and length, thanks.

[@jayscott5477]

6880 lbs dry weight

[@brianduncan3267]

Just got home from a 3200 mile national parks trip out west with our 23 LZO. Towing 26ft Lance trailer at 6-6500lbs I got 14 driving 65-68mph heading east (with the wind), and 12-13 on the return trip heading west (strong head winds). When unhooked from the trailer we did 1100 miles of driving around the parks (2 week trip), and regularly saw 32-35mpg. Total MPG for the trip was 17.1mpg, with 9.5 gallons of def used (adding $0.0015 per mile of cost). Compared to our Toyota 5.7 we did a similar trip with 2 years ago with the same trailer, we got 8.5mpg towing, and 9.5mpg for the total trip. So a 90% improvement in MPG, and it was way more comfortable towing the load then the Toyota.

[@tm12productions5]

Thank you for this detailed input of your experience towing with the LZO. I have a 5.7 Tundra also and am considering the LZO as my next truck. I also tow a smaller (20ft) dual axle toy hauler and am looking for the best truck without getting into HD as it’s overkill for a daily driver/commuter. These GM 3.0s tick a lot of the boxes.

[@JustOutHereTinkering]

I had a pretty long trip, about 1800 miles (much higher percentage towing) and my trailer is 6300lbs dry, I estimate I was around 7000lbs. I was towing with a 2020 Ford Ranger (yes I'm within the boundaries of the truck). I make 24-25mpg without the trailer. Going north I made 9.5mpg and south I averaged 13mpg for a trip total around 11.3mpg towing pretty consistently at 65-67mph. I do think one of these 3.0 diesel trucks would be good but I was proud of my little ranger! I could maintain 60mph up an 8% grade!!!

[@stevelanders9602]

Diesel costs more than gasoline

[@scottrigsby3146]

@@stevelanders9602 You get less MPG's with the gas engines. You are not getting the 32-35mpg's that @brianduncan3267 was talking about when not towing.

[@shadowsabre194]

@@JustOutHereTinkering Does your truck have the optional Max Trailering Package?

[@kennyparker1195]

Nice video, i went from a 1 ton dually to the 1500 and towing is different. Towed 1700 miles round trip last week lots of hills and rain ended the trip with 13.1 mpg average. Very impressed with this little 3.0 duramax.

[@adamcrouch]

How much did your trailer weigh?

[@kennyparker1195]

@@adamcrouch 7800 lbs.

[@tannerfox2992]

How many gallons of def did you use?

[@kennyparker1195]

@@tannerfox2992 my def consumption doubled while towing. Used close to 5 gal.

[@brucegeib263]

What's your weight of trailer.?

[@stevelithgow8693]

This is a totally a real world test... Kudos for your effort! I had a 2019 5.3 RST towed a 6k travel trailer all over NM,CO,WY,AZ .. it worked but damn the mileage sucked and if the wind blew.. I just wanted to pull over. Traded for a 2023 LTZ 3.0 ... different thing all together.. I get crazy mileage without the trailer 25 town, 28 highway and my 5.3 was around 9.5 pulling the trailer ( and I never checked it by hand and I'm saying that computer was a lying mofo), the 3.0 duramax 12.5 towing same trailer and actually better when hand calculated. Kudos to GM for erroring on the low side with the computer with this new truck. Oh.. I did put sumo springs on the new truck .. huge difference when towing as far a stability. Thanks for this great video.

[@MOHAWKAUTO]

Thank you, I’m glad you liked it! That’s awesome to hear a comparison with the 5.3 and that the LZ0 is working out for you much better.

[@michaelerickson2596]

I have the 3.0 Duramax and towed my TT to Yellowstone and back, around 2300 miles. My TT is closer to 8000 lbs. Got around 11.5 mpg. But the big consideration for me in trading my 5.3 v8 for the 3.0 was operating rpm. My 5.3 had to spin around 4300 rpm to handle mountain grade hills and couldn’t really go much over 50 mph. The Duramax handled them at 2500-3000 rpm and could maintain 65 mph and usually accelerate up those grades.

[@budlite8207]

I drive a 2021 Sierra AT4 with the 3.0 Duramax. We pull our Dune scooters with it. On longer drives I get about 26.5 mpg but the same trip towing, it drops to 18 mpg while towing about 4500 lbs. Plenty of power and torque too. We like he Duramax so much that we bought a 2023 Yukon with the new Duramax. It gets like 28.5 mpg on the freeway at 80+ as my wife has a very heavy foot.

[@MOHAWKAUTO]

I think it’s a great motor and that the Yukon with it is going to quickly be considered one of the best SUVs you can get.

[@slickcasner4205]

I have a 23’ GMC SLE 3.0 Maxtow package. 4x4 Crew cab with a 6’7” bed. So I have enhanced cooling. The 9.76” rear diff with 3.73 gears. At 18,000 mi my life time average is 24.2mpg. Thats with 2 winters of using remote starts. Unloaded averages 26-32 mpg. I pull a loaded down 22’ enclosed trailer. With a 5th gen Camaro. Around 9k lbs. Running at interstate speeds 70+. I have been averaging 12.4 mpg. Right at a 45% improvement over the 6.2. Also pulling up the larger hills in Kentucky. The LZ0 3.0 will not only maintain speed with power to spare. But can accelerate. The 6.2 on the same grade is pretty much on the floor struggling. And my 5.3 would lose MPH. But the sound of the 6.2 is just music lol. The 3.0 will walk away from a 6.2 if they are both loaded down heavy. Unloaded the 6.2 is way faster.

[@MOHAWKAUTO]

The 6.2 sounds so good! I’m happy with my 3.0, I just wish I could tune it to give it a little more pep.

[@chrisguillen1495]

@@MOHAWKAUTO just wait, it took them a minute to unlock the lm2, in no time the lz0 will be tuneable.

[@MOHAWKAUTO]

@@chrisguillen1495 I can’t wait!

[@jayk.2276]

This is the build if your towing with a half ton. The standard beds are always going to give you significantly more stability towing and better payload. I currently have a 21 GMC Sierra SLT with the 6’7 bed and 5.3 and it feels great towing my livestock trailer, but leaves much to be desired in terms of efficiency and power. I’ve been looking to upgrade to an SLT with a 6’7 bed and 3.0. The 6’7 beds are just hard to come on dealer lots so I may have mine built to spec.

[@miketaylor3778]

Last July, I towed my camper, similar to your camper from Omaha Ne to Loris SC. Travele speed 60 to 65, got overall 14 mpg there and back. Mine is 2021 LM2 engine. Doing the trip again soon.

[@MOHAWKAUTO]

That’s still pretty good mileage!

[@DouglassTaber12]

What kind of DEF consumption did you get?

[@miketaylor3778]

I used a box a day while towing

[@timschuette6660]

Really glad you did this video. I've been considering the zr2 with the duramax but was on the fence about it towing my trailer. This answered and lot of the question's I had.

[@chrisregister510]

I went from a 2019 6.2 to a 23 3.0 LZ0 and tow the same camper regularly (about 7,000lbs loaded). Highly recommend a weight distribution hitch and Road Active Suspension if you want to go 70-75mph. I average about 11.3mpg with a mix of driving from 60-75mph.

[@MOHAWKAUTO]

How does the 3.0 compare to the 6.2 for you?

[@chrisregister510]

@@MOHAWKAUTO no comparison absolutely love the 3.0 and would never go back. Fuel economy and towing being the main reasons. I’ve had the same tires and 3” lift on both rigs with BFG KO2 285/65/r20 and averaged: 6.2 normal driving about 15-16mpg 6.2 towing same camper about 7-8mpg 3.0 normal driving 21-22mpg 3.0 towing 10.5-11.5mpg

[@MOHAWKAUTO]

@@chrisregister510 that’s awesome! I know some people are saying that they feel like the 3.0 is gutless compared to the 6.2. Do you feel like that’s the case?

[@tommysiemienik7172]

I have the 2023 Silverado 1500 RST 4X4 Diesel... Towed about 5000 lbs. from NC to South Florida my Sea Hunt CC boat and I was getting 10 - 11 mpg and it drank DEF fluid worse than an alcoholic... Normally DEF fluid lasts and still does a few FULL fill ups so no biggie... Go for a 12 hour tow and plan to bring a few 2.5 gallon DEF boxes in your truck bed... Sucks DEF fluid BIG TIME while towing that type of distance... At least mine did... Please NOTE: This truck set up NOT IN TOW drives like a Caddie on the HWY and pulls like a Champ... The torque makes other vehicles wonder what's under that hood when you leave them in the dust... Keeper for me... Thank you for this video... !!!

[@frolfking35]

Get the valve cover replaced I heard that's why it's doing that

[@tommysiemienik7172]

@@frolfking35 Huh... It only probably had a few thousand miles at that time... However, you could be right... Things do break... !!!

[@yzf600fl]

Have the same issue

[@fit4ya1975]

I wish they would just get rid of that DEF crap. Its choking those Diesel Engines along with the genius engineering of the exhaust systems.

[@HighAnxi3ty]

Rather than MPG.. maybe do a Cost Per Mile... Considering Gas (87/85 Oct) Cost vs Diesel/DEF Cost. what's the difference in cost per mile, because MPG doesn't consider DEF usage and difference in fuel prices.

[@MOHAWKAUTO]

You’re right, but I wasn’t comparing this to gasoline. DEF usage varies greatly based on a ton of factors so that’s hard to calculate anyhow. I also consider DEF to be inexpensive enough ($15 for a 2.5 gallon box) that I don’t factor it in. I have almost 7k miles on my truck and I’ve only bought 2 boxes. $30/7000 is 0.004 cents per mile. If I towed a lot more, that would change and it would be something more to consider. I usually look at the percentage cost difference between fuel vs percentage difference between mpg. The cost per mile method is a great way to look at it also.

[@johnmorris77]

I have a duramax Zr2. I average 25 mpg. I previously had a ram hemi it averaged 15. Even after the increased fuel cost I’m still saving like 1,200 a year running my average 12,000 miles.

[@ryanvegas777]

Just food for thought…the closest comparison on gassers from GM is the 6.2 (also mentioned in this video), but lots don’t realize the 6.2 recommends 91 or higher octane…the price per gallon ( here in vegas, today ) diesel is around $4.10/gal and the cost of premium is around $4.35/gal…now add in the worse gas mileage and there is no doubt how a video like what’s suggested would turn out…

[@MOHAWKAUTO]

@@johnmorris77 thank you for sharing!

[@rsbreeze]

Diesel is cheap if you run offroad fuel.

[@aaronu4221]

Love my 21 Sierra SLT 3.0. I installed a set of timbrens to help with the squat. On an 18 hour trip into Canada pulling a 3,000lb boat with the bed packed with gear including 30 gallons of extra gas i averaged 21 mpg. Truck preformed great, i was impressed.

[@danieldornes8416]

Great info in this video! I like the fact that you actually calculate your mpg, rather than just commenting only on the dashboard computer. (In my experience, it is rare that the onboard computer is accurate, no matter the brand.). I was considering getting a new Silverado or GMC with the 3.0 Duramax for daily driving and the occasional towing of a travel trailer. I was thinking of getting the Max Tow Package for the reasons you mentioned, but wonder if the included 3.73 rear end would harm the fuel mileage very much for my daily driving. Especially since I wounld be 90% daily driving and only 10% towing. If anybody knows how the 3.73 affects mpg as compared to the standard rear end, I would love to hear about it.

[@MOHAWKAUTO]

Depends on your daily driving. The 10 speed allows it to still be in the lower rpm range for in town driving. You might actually see improved in town driving as it will accelerate better. At highway/interstate speeds you’ll be at a higher comparative rpm vs non max tow package.

[@danieldornes8416]

@@MOHAWKAUTO OK, thanks. Being at a higher rpm vs non Max Tow Pkg is exactly what has me a bit concerned that it would cause poor fuel mileage.

[@MOHAWKAUTO]

@@danieldornes8416 from what I’ve seen owners report, it’s a few MPGs difference ultimately. I honestly would have gotten the max tow if I went with a different trim. I drive 90-95% in town driving so it would have been more or a benefit than not in my case.

[@ramhammer10-4]

Nice info, I have a 2013 f350 super duty 6.8 power stroke. I towed a 11000lb heartland fuel 250 from Buffalo NY to Nashville Tennessee. I got 9.8 miles per gallon.

[@TonkaFire2019]

I had an lm2 2 years ago. Crew cab slt 4x4 with 6.5 ft bed.Towed a dump trailer on occasion and it did not like it. Between the load and trailer it only weighed 7500 or so with my capacity at 9300. It struggled on a flat road to get to 45mph. The site was only 2.5 miles from my house and the small hills made it struggle even more. The pedal was in fact to the metal and was only able to go 25 mph. It was in tow haul mode. After that 25k the high pressure fuel pump blew. Not sure if it was connected to towing the dump trailer but was very strange. Now I’m back in an lz0 gmc elevation with max tow package.

[@MOHAWKAUTO]

That’s crazy about how the LM2 was for you. How does the LZ0 compare to you?

[@alceja3522]

Cool video. I have a 6.2L Trail boss and pull that same trailer. With my 2 inch level the squat is loyal lol pulls nicely tho

[@MOHAWKAUTO]

Thank you, and that’s great to hear how someone else does with the same trailer

[@muleskinnerpro]

I'm averaging 12-13 MPG with 2021 LTZ, Z71, 3.0, towing in all Montana conditions towing 14k camper at 70mph. Hills are no problem at any speed. Sometimes gearing down very steep mountain roads, it smokes real bad exhaust and the dealer doesn't know why? I agree, It sure uses more DEF when towing. I have 70k miles on it and love the ride.

[@waynekeizer5720]

I think if you’re going to tow everyday a heavy duty is the way to go. I have a 22 f250 and was going back and forth about getting the 3.0 duramax but was nervous I was going to get significant mpg drop when I was towing. For reference I avg about 18 mpg with empty and about 15-16 well towing in the city with traffic on the highway and streets.

[@MOHAWKAUTO]

I’d be inclined to agree unless it was a small/light trailer. I’d personally get a heavy duty if I towed everyday

[@matthewbiertzer6991]

Nice video! You were very thorough. Appreciate that.

[@MOHAWKAUTO]

You’re welcome and thank you!

[@mikelambert6747]

Have over 52,000 on my 21 and mileage has stayed pretty consistent at 13.8-14.7 towing and 25.8 city, 29-31 highway. Love mine!

[@jl75750]

I assume your 3.0 is not the ZR2 or Trail Boss with that high mpg??

[@mikelambert6747]

AT4, crew

[@warrenstephens3705]

Why in the hell would anyone purposely tow a travel trailer at 80+ mph? THIS is why I never loan out my trailer. smh

[@MOHAWKAUTO]

No one, and that’s the point 😉

[@Joeyhurt1990]

are you not doing a video people can realate to? Weird attitude to have.@@MOHAWKAUTO

[@MOHAWKAUTO]

@@Joeyhurt1990 I think I’m making a video people can absolutely relate to. I wanted to tow the trailer as fast as I could safely, and I did. Did I expect to be able to actually tow it going 80? Not really, but I wanted to try if it was safe. I’ve driven 1 ton work trucks with much heavier trailers when I did drywall work a longtime ago and was able to go 80 without issue. Those were very different trailers that were properly balanced and level and the truck was level too. I never experienced trailer sway like I did during this video. So I think you might be speaking out of turn, which is a weird attitude to have.

[@howebrad4601]

Towing at 80, while doable is ridiculous. No reason to pull over 70. Things happen fast when towing and running 80 leaves you no room for error.

[@MOHAWKAUTO]

@@howebrad4601 I agree for the most part. Depending on what you’re hauling and what’s doing the hauling, terrain, weather, and where you’re driving, 80 is the speed limit and can be done safely as it’s flat, wide open multi lane interstate or highways. Plenty of space to have a big gap between you and the people in front of you. I just wouldn’t recommend it for most situations.

[@kingminkhant]

I got 2023 escalade with LM2 with grand design 30 ft trailer. With fully loaded and 4 adult and 2 kids. Towed camper to Joplin mo from Indiana and back. Average speed 70 to 85. Both vehicles fueled up and passenger on board grossed at 14480 on CAT scale.😂 cruise at 75 and up to 85 when passing average 12.38 to MO and 12.22 on the way back. Calculation was done on the apps. It's pretty impressive.

[@MOHAWKAUTO]

That’s very impressive and I’ve been curious how the 3.0 performs in the SUVs. Thank you for sharing!

[@fit4ya1975]

100% you are over payload. Plus pulling that much weight at 85mph is very dangerous.

[@ericschroeder784]

@@fit4ya1975 not sure he asked for your input.

[@fit4ya1975]

@@ericschroeder784 Not sure either. But I know for sure I didn't ask for yours.

[@johnnyd5826]

😂

[@normangettys76]

You should’ve done a third test, towing the trailer in standard mode instead of the tow/haul mode

[@MOHAWKAUTO]

Given how low it sat in the rpm range and how it wasn’t shifting a lot or hunting for the right gear, I’m not sure it would have made too much of a difference. I am thinking of doing another tow test and if I do, I may consider this as you’re not the only person that’s suggested it.

[@rjd827]

I got a 23 at4 with the LZ0. Towing my 7x23 inline enclosed trailer and I get anywhere from 11.5-15 mpg depending on time of year. Winter diesel is worse mpg vs summer diesel. Empty I get about 22-28 mpg on highway going 75-80 mph and I’ve gotten as good 34 mpg going 60-65 mph. Never gotten below 11.5 mpg towing.

[@MOHAWKAUTO]

That’s impressive!

[@Gameplayer70]

I find that I typically get better mileage in Fuelly than what my ‘24 AT4 shows. I haven’t towed yet though, and only have about 1,800 miles on the engine. I think that the difference in your trailering app vs the dash is the fact that you reset the dash trip when you filled up, and the trailering app was calculating from when you hooked it up. If you’re going to tow regularly, the PPE intercooler and transmission base cooler would be really good upgrades to make.

[@MOHAWKAUTO]

I agree and I think no mater what I’ll do the PPE transmission cooler bypass valve

[@johnfaber7106]

I have a 23 with the LZO engine, max tow package and regular tires. I tow a Lance 1475S -small camper. Over 10,000 miles we are averaging 17.2 mpg. I try to not go faster than 65. I have the transparent trailer feature and is fantastic. John

[@dalelangehennig161]

I think the ZR2 is probably more of an issue than the 3.0 LZ0 as far as towing. That off-road suspension is just a little loosey-goosey for me. But I am absolutely kicking myself for trading my 3.0 LZ0 for a 6.2 as I do pull a heavy boat 6 times per year, but the other 359 days per year I commute. MAN I miss that 27 MPG on my 3.0 Silverado. I also miss the drama-free driving up and down hills in the 3.0. so buttery smooth and almost no gear kick downs due to the power is in the lower rpm range. Just love that motor! If I was pulling a travel trailer or even my boat regularly, I would go 3/4 ton, but 90% commute and light utility hauling in the bed, the 3.0 is my favorite motor/powertrain ever in a 1500.

[@MOHAWKAUTO]

@@dalelangehennig161 I agree. The suspension is one of the ZR2’s best qualities, but it is also the reason it sags more than other trims. However, that can easily be corrected. Since this video was posted I purchased a trailer very similar to this and a weight distribution hitch and I’ve had no issues towing.

[@dalelangehennig161]

@@MOHAWKAUTO Awesome! Such a great truck and drive train, and I love the ZR2 suspension, just mentioning about the towing issue. I bet the Weight Distribution hitch helps a lot. Either way, it is a super great truck! Hope GM keeps the 3.0 in the line up as a staple and continues to refine. After owning all brands full size and HD, the 1500 3.0 is my final choice as the best combo unless extra heavy towing. I can see myself driving that drive train in all my trucks going forward. Absolute butter smooth. Thanks again for the great video and content!

[@TomVanDiepenbos]

interesting comparison on fuel consumption 3liter Duramax I have a 2020 3 liter that I tow a 27 ft enclosed car trailer I'm very happy with my truck. I noticed you mentioned the wind affected the stability of the trailer I installed air tabs on my trailer I am very impressed with the improvement of the stability of trailer with the air tabs do a search for air tabs I would like to see a comparison with that product

[@robm3357]

I am very impressed with the 3.0 and how good the milage is with a full sized truck compared to gas. I have the Colorado 2.8 diesel and I tow a 24 foot duel axle travel trailer toy hauler at between 5000 to 6000 lbs depending if I take my Victory Vision with me and if I fill the water tank ect. I get 14-16 mpg. The tongue wt is 700 lbs and I use weight distribution hitch and I do get blown around a lot. But I am extremely impressed with the mileage while towing a square box at speed. My Colorado gets 30-32 mpg unloaded.

[@MOHAWKAUTO]

Those are great numbers!

[@npsit1]

I took a 29' camper (7400lbs) behind my 92 Suburban with a 350 TBI to Florida back in 2017. I got about 6mpg. Usually I could only maintain 60mph. It was rough. But it's a tough little engine.

[@darrena8439]

My friend and I have exact same trucks other than I have the 3.0L and he has the 6.2L. Pulling almost identical campers (29'), i get just shy of 14 mpg and he gets just shy of 9 mpg. I really like my 3.0. It is very quiet under load and lots of power on acceleration. Also, I do not tow a lot and I drive about 12,000 miles per year. Last year my cost per mile was $0.167.

[@MOHAWKAUTO]

That’s awesome to hear! I really enjoy how quiet my engine is under load and the overall power and acceleration has been great for me. I’m looking forward to the summer months to see how much better the fuel economy gets.

[@JustMirac-m8k]

Spent 4 yrs stationed at Mt. Home AFB! Loved Boise and Idaho in general!

[@MOHAWKAUTO]

It’s a great area!

[@AnontheGOAT]

@@MOHAWKAUTOno no no. It’s a terrible area and doesn’t even exist on any map.

[@MOHAWKAUTO]

@@AnontheGOAT sure it is! It’s right below Minnesota and right above Missouri.

[@Mark6.5x47]

I have a 2023 Sierra 1500 with the LZ0. It pulls our boat, which is about 6K lbs., at 70 with no problems and gets 13 MPG.

[@ILM787]

I have a 2022, High Country, 4x4, LM2 3.0 Duramax towing a Grand Design 2500RL (about 6,750lbs). I get about 12.5 at 65mph through the midlands to the coastal areas of North Carolina. Not towing I get from 24 to 27 mpg at 75 to 80mph.

[@MOHAWKAUTO]

That’s still good mpg, especially for a half ton

[@davidroman1654]

Had a 2012 LTZ with the 5.3 and towed our 32' TT that will go about 7,000-7,200 lb. Over all on a number of long trips averaged right at 9.0 mpg. Now have a 2023 LTZ Z71 with the 3.0. Only taken one trip so far with the same TT. Averaged 13-14mpg on a trip of about 1,500 miles. On the highway get between 25-28. Could probably bump that up some if I could get the CC to set around 65, but for some reason it usually is locked in around 78-79 because I have passed HP at that speed and they never even look twice and 65 on Texas interstates can get you run over.

[@MOHAWKAUTO]

Same issue here with fuel economy vs the interstate speeds. Really impressed with towing mpgs though!

[@ryansakata3507]

Miss Mtn Home...first duty station in the AF. Thanks for the informative video.

[@TonsAFun15]

Awesome, realistic video. We have the 3.0 LTZ with the max tow package and a shorter, but slightly heavier camper. Using the Blue Ox Swaypro WD hitch, we averaged around 13-15 mpg's while towing on a 500 mile round trip through the White Mountains and New England. We have a bit less sag, but your set up is probably much smoother on normal driving.

[@workhardplayharder9149]

Pretty much what I expected. Have a 2016 Colorado 2.8 and tow a 29' toy hauler at 6000 lbs. and get 12-14 mpg at 65. Get 30-32 mpg with no trailer at 65.

[@MOHAWKAUTO]

That’s impressive!

[@edwardpate6128]

I get about 32 with my 3.0 running 70 with the cruise set.

[@jma64930]

I used to have the exact same camper...towed from south texas to pidgeon forge tenessee and back. Avaeraged 13.4 mpg. Thought that was great! I have a wdh and it tows safe and level.

[@chipd4299]

I have a 24 Sierra with the LZ0 with a 6” lift on 35x12.5r22 mud terrains and on my recent trip towing a 7200-7500lbs trailer 180 miles trip I got 13.9 mpg. Compare that to my 20 Denali with similar lift and tires with the 6.2 I got 6.6-6.8 mpg on the same trip.

[@CWB367]

Have any of you had issues with engine light coming on with the new 3.0? Code says it is the fuel management system that has to be repaired. I have a 2023 ZR1 LT Duramax Silverado and it has done it 5 times now, 3 last year and 2 this year. In the shop now, GM trying to figure it out again. Last year they down loaded a new program per GM and that fixed it for a while. Just curious if anyone else has that issue?

[@MOHAWKAUTO]

I haven’t and I have over 12k miles on it now

[@CWB367]

Okay thanks, I am at 17,450 miles now, must just be the lucky one. Great video! Sent it to my buddy who is thinking about getting one. Besides my issue, love my truck, I got the standard bed, since I haul dirt bikes in the back. Hauls my 4 seater Can am pretty easy. Had the 8 cylinder Duramax 2006 crew cab Silverado before this one. Loved that truck, but fuel economy sucked. Thanks for the reply!

[@docgreen3526]

I had a 2020 GMC Denali towing an aluminum car trailer with rock guard and a '69 Torino from Sioux Falls, SD to Sturgis, SD. Driving 75-80 mph and got around 20 mpg. Truck was in for repairs the next trip with a loaner X31 with a 6.2. As close to the same conditions as possible and got 9-11 mpg. Empty 24-27 with the 3.0 and 18-20 with the 6.2 empty.

[@danzante85]

Thank you for posting and sharing such a thorough review. I just purchased a 2024 1500 ZR2 Bison with the Duramax 3.0 LZO. Given the owners manual recommends the use of only top-tier diesel and how scarce access to such diesel is not only in my area in California, but also nationally, lam wondering what other Duramax LZO owners use to fuel their trucks.

[@MOHAWKAUTO]

@@danzante85 I’ve been using normal diesel and B20 on rare occasions while traveling. I also use Power Service Diesel Kleen +Cetane Boost every few tanks for a piece of mind. However, after seeing recent videos, I’ll be using Archoil diesel treatment as it looks to be doing a great job cleaning everything including the DPF filter and it’s having a positive effect on DEF consumption by increasing mileage between regens.

[@brandoningle6543]

Ive got a 2023 RST with 12,000 miles. Heaviest load was 8K hauling logs on a 24ft flatbed. Rolling hills for 180 miles at 65mph. I got 19mpg. My average mpg is 25mpg mostly in town (i keep the auto stop/start on) i had the 6.2 before. For hauling i would take the 3.0 anyday.

[@MOHAWKAUTO]

That’s awesome mileage towing!

[@brandoningle6543]

@@MOHAWKAUTO Your material is great. Thanks for the videos!

[@gerrycollins9409]

Squat in my opinion doesn’t mean very much. What’s going on is the leverage and force being applied behind the rear axle which is taking weight off the front axles making your set-up dangerous. Unfortunately airbag manufacturers market airbags like they actually do some something. A load distribution hitch will actually transfer the weight as it should be for much safer towing.

[@MOHAWKAUTO]

I agree with your thoughts and airbags wouldn’t be my first choice.

[@juanl5905]

Add air lift to help with the squat. I’m running a set on my truck and there’s no squat and rides a ton smoother empty. I was worried about how it would affect the ride being empty but hands down it’s a lot smoother and well worth the money 👍🏽👍🏽👍🏽👍🏽

[@robqwertyuipp8750]

Coming from a 3/4 ton truck , i am getting use to the squat on the 1/2 ton ZR2 , i tow a 7x16 double axle enclosed trailer with the 6.2 , definitely likes the fuel when towing but not as much as the 2022 hemi dodge i drove for a couple months .

[@MOHAWKAUTO]

That’s good to know! I debated getting the Ram 1500 with the Hemi and e-torque.

[@100pyatt]

Easy to fix with air bags

[@mr.mcbeavy1443]

​@@100pyatt Save the $$$ and hassle and use a weight distribution device.

[@cde3cvr]

My 2020 Trail Boss with the 6.2 gets 9-10mpg towing a 29 foot trailer with a 6300lb dry weight and loaded with all gear for trips with full propane tanks and an extra battery so it's probably closer to 7200lbs. When not towing I get 16-18mpg in the city and 18-20 on long freeway trips. Road Active suspension springs solved my problem with the 2.5 inches of squat and took away about 2 inches of it so the truck rides level when towing. Great video illustration of the MPG's from the baby Duramax.

[@mp5kfisher241]

I have a 2022 with the same engine. You need a helper spring on these 1500’s to help keep the nose of the truck down. Before i did spring modification i had people flashing their brights at me all the time, it was blinding oncoming drivers with just the normal headlights.

[@luisvasquez8690]

My 2020 6.2 1500 Sierra is terrible pulling 9000lb 28ft travel trailer!! Avg about 5-6 mpgs going about 65-70 mph over 180 miles on flat freeway!

[@MOHAWKAUTO]

That’s crazy!

[@jemery3]

my 22 trailboss with the lm2 towing my viper (roughly 5k lbs total ) on an open trailer gets almost 20mpg if I keep it 60-65mph and than at 75 I get around 15.5-16 mpg

[@MOHAWKAUTO]

That’s really impressive!

[@lt99ls1]

Pulling the same jeep and trailer (8550 lbs), My 2020 3.0 gets 18% better fuel mileage than the 2012 6.6 Duramax and 2017 Nissan Titan Xd 5.0 Cummis I had. And when I am not towing the 3.0 gets 47% better fuel mileage than the other tow trucks did. I do run a weight distribution hitch to make the 3.0 truck ride level when towing the jeep and trailer.

[@MOHAWKAUTO]

That’s an awesome boost in fuel economy. I plan to use a distribution hitch for towing heavier loads.

[@exordis]

How did the Titan XD handle the load while pulling? Not power wise, but stability?

[@lt99ls1]

@@exordis It handled every bit as good as the 2500 6.6 Duramax trucks.

[@exordis]

@@lt99ls1 Good to hear. I love the idea of the 3.0, but also love the idea of the heavy half ton. Especially if the ride isn't too compromised (with the gas 5.6).

[@farmerguy8579]

I towed a fifth wheel camper out west and through the mountains and averaged 13-14 mpg with the 3.0. This really isn’t a good comparison because no one should pull campers at 80 MPH. You’ll get a few MPGs if you stick it around 67 or so. Also installed airbags because the stock suspension is way too soft for any significant towing applications.

[@MOHAWKAUTO]

I never towed at 80. I had the cruise control set to 62 because of the higher wind conditions

[@charlesnash2748]

I pull a 23 foot Holiday Rambler trailer with a 2012 3500 Ram with a 6.7 Cummins and a 6 speed manual trans. I get 15+mpg.

[@BobPalmer-zh1go]

Great job at real world testing I. get 26-28 mpg on the highway when not towing and when towing a 8800 Ib boat it stays at 13.2 at 65. does use more def when towing . Never felt like it struggled or wasnt enough power . pulls so much better then my last truck with the 6.2

[@timwaddell9450]

So as a guy with a lower hp titan cummins, i agree with what you are saying. You bought a truck that suits you and your needs, not someone elses. I tow oftem with my truck, and also live in boise. My trailer is closer to 10lbs but my numbers are not far off of yours. 9-12 towing depending on speed and weather. No load 18-21.2 also depends on speed. Best i have gotten was no load, 55mph run at 23.4, from blacks creek exit to cloverdale and no traffic. People discount the small diesels, but only because they think they will tow a house all the time, 90 percent dont and use their diesel truck as a commuter.

[@MOHAWKAUTO]

I agree that so many people buy more truck than they need, which is fine. I just didn’t want to spend more to buy a truck and then spend more for fuel because of worse mpg. It’s far more cost effective to buy a distribution hitch and airbags (or something similar) to tow safer than it is to get a HD truck. The small diesel half tons are great options.

[@edwardpate6128]

Excellent points! I know I love my 2022 3.0 Duramax and I don't see myself ever going back to a gas powered truck.

[@MOHAWKAUTO]

@@edwardpate6128 after owning this, I’m not sure I would either

[@yzf600fl]

I have a 2022 Trail Boss (full size bed) with the 3.0L Duramax. I get about the same mileage towing a camper around the same weight as in the video. Traveling from Florida to Ohio (Cedar Point), the biggest issue I had was the amount of DEF the truck consumed. I went through it like crazy. I have a bit heavier camper now but won't travel that far with it because of the DEF issue. I have added air bags and leaf spring helpers and have a weight distribution hitch because the new camper's tongue weight is a few pounds over the "max". I have gotten close to 15mpg even with the heavier camper, but the roads in Florida are pretty flat and that is staying below 70mph. Without any towing, I average about 25mpg. Crazy for a full size truck. Yes, most of it's highway driving but if it's highway only, I will easily get over 30. My Colorado 2.8L Duramax was awesome on mileage too.

[@zacharybliese6245]

Last spring I purchased a 2024 silverado rst with the 3.0 and got 30mpg for an average in 500miles, hooked it up to my 7300lbs camper with weight distribution hitch and was getting warning lights and messages on the main display saying I was over loaded. Because i tow my travel trailer frequently I ended up returning the vehicle back to the dealer

[@MOHAWKAUTO]

I’ve never once gotten a message saying I was overloaded. I’d be surprised if I did too as it says 8700 on the sticker. For our next tow test, I’ll load it up more and see what happens.

[@stevenglacoste5093]

Great Presentation! I have noticed that in several KZbin videos, many have commented on the DEF and also, the unexpected high usage of diesel oil, and it appears that the diesel oil is headed towards the turbo. In the video, it mentions that PPE has developed a Prototype Catch Can for this oil problem and is being tested on vehicles. Please provide a comment in future 3.0 LZ0 Duramax ZR2 video, whether your Dealership and your mechanic can provide any feedback on if the current 3.0 LZ0 Duramax oil leakage problem is a problem and will be address by GM / Chevrolet. Best, Steve from Western Mass.

[@MOHAWKAUTO]

I have heard of some vehicles experiencing these issues. While I’m interested in the catch can PPE is developing, it’s purely to reduce oil and other crankcase vapors that don’t belong in the intake, out of it. This is something common on many engines. I haven’t had issues with what I consider to be unexpected DEF consumption, although I know that it uses a lot while towing and that’s what other KZbinrs have been doing more of compared to me.

[@deanwilcox1698]

Good job on the video. I laughed at one of the people in the comments that couldn't believe that someone would tow at 80 mph. He obviously hasn't driven through Boise before. Lol

[@MOHAWKAUTO]

Towing at 80 is a normal thing here. I’m not sure that everyone is making sure their trailer tires are good for it, but they do it all the time.

[@jl75750]

But why?? It seems outrageously irresponsible towing st that speed due to disregard for safety alone. Just my opinion. ​@@MOHAWKAUTO

[@MOHAWKAUTO]

@@jl75750 I’m not saying it’s safe to do everywhere, and I’m not saying everyone should do it, but I don’t think it’s disregarding safety to travel at a speed that prevents you from impeding traffic. In fact, driving well below the posted speed can actually cause a lot of accidents too.

[@HenryRodriguez-vq1ee]

Or Texas, at all.

[@MOHAWKAUTO]

@@HenryRodriguez-vq1ee no joke

[@DanielE-ww5ui]

I had a 5.3 RST and now have a 23 RST with 3.0. So far love this engine. The RST sits at a normal hight so fuel economy seems much better then the lifted versions with bigger rubber. A good mod for anyone that tows heavy allot is to get quality E rated tires. 10 ply tires are not needed for the GVW, but they take allot of sway out and gives more of a sure footed feel. An extra leaf added to rear or air bags would be also be worth it before deciding to step up to a 2500 IMO.

[@RippingWieber]

So my high country with a 6.2 got 9 mpg with a bigger trailer 6800 dry 34 feet long 850 toung on a 70 mile drive. Went from 3200feet to 3800 feet with 3 big hills.

[@MOHAWKAUTO]

I’m sure the high country version with the 3.0 diesel would get better economy than what I was getting.

[@PaulSwann-mu9xb]

I’ve got a 24 Denali with an LZO and it seems to pretty much be good at everything. I love it

[@philrenaud4224]

I have a 2022 RST 3L and I pull a 224BH Jayco (2021) 7500lbs total. When pulling the trailer on the highway around 65 mph I average 12-15mpg, in perfect conditions i went to about 16-18 mpg. Comparing to a V8 gas truck to this new little diesel I will take the diesel mileage all day long.

[@MOHAWKAUTO]

That’s great mileage by comparison and I’m excited to see what mileage I get with my new trailer

[@rejeanstuart2951]

I have a 2020 RST double cab and pull a 27' Airstream Flying cloud probably around 6800lbs Went to Chattanooga,TN and back to Charlottesville, VA for a camping week, keeping it at 65mph we averaged 17.8 mpg. My old 2010 GMC w/5.3 averaged 8.0 mpg. Baby Max does a great job, as does the 10 speed transmission.

[@lorenzolopez6238]

My 2023 Z71 RST gets awesome gas mileage. Towing my cattle trailer with 3000 lbs of cattle, I have averaged 13 to 15 miles per gallon. Wind definitely plays a factor.

[@MOHAWKAUTO]

That’s great mileage for sure! Does your RST have the 3.0 also?

[@scottleaf6034]

Would be interesting to see what the Max Trailering option, without the off-road stuff, does to minimize the squat.

[@MOHAWKAUTO]

@@scottleaf6034 the max trailering package only changes the gearing. So it would handle the squat like any other 1500 pretty much. I’ve eliminated much of the squat by using a weight distribution hitch.

[@jimmyfixit1]

​@@MOHAWKAUTO no it's not only gearing. Bigger radiator, beefier springs, stiffer shocks

[@bryanschaffer2100]

Very nice video. My experience with LZ0 AT4 towing 7400 lb extra height enclosed is 11-12 mpg over the mountains of eastern Tenn. Avg. 26 City every day. Love it.

[@MOHAWKAUTO]

That’s great city economy and not bad towing over those mountains!

[@markbutler6634]

Just for comparison, I have a 2019 5.3 with the tow package. I pulled my jeep on a trailer (about 6000 LBS) too Utah and back, round trip was about 2200 miles. I averaged about ten miles per gallon, and It did tow with easy. I would rather have the 6.0 or the 3.0 diesel, but this is what I could afford at the time.

[@MOHAWKAUTO]

That’s good information! Thank you!

[@aarone9454]

Sick Truck!!!! I get around 11 mpg towing my 5000lb travel trailer with my 2024 GMC Sierra 1500 with the 2.7 turbo.

[@nr552]

Pulled a similar trailer with my '18 w/5.3L and averaged 10.5 mpg over 1500 miles (including climb the grapevine in CA.)

[@danielhenry5842]

2023 z71 trail boss 3.0. Driving around Easter washington and north idaho 27 plus empty and 17mpg towing random weights

[@dsmnpd]

I have a ‘21 LM2 RST and I tow a 38’/10k lb Travel Trailer. I get 13.5-14.5 MPGs Towing and I tow often because my wife and I are Full Time RVers.

[@shanebrown2963]

You can get towing package on any trim i believe and it gives you added springs in the rear among a few other things. Doesn’t come stock

[@FossatiDan]

Towing 6,800 TT gets about 14-16 in normal conditions. I go 65-70 mph though. The best one ever was with a 30 mph tail wind I cleared 20 mpg! But that's an outlier and shouldn't really count. Overall great engine, you made a great choice or that weight range of TT. Anything over 10k wet, I'd go HD.

[@MOHAWKAUTO]

I’d agree with going HD. There are some half tons that can tow 13k, but I’d be more likely to upgrade to HD if I was towing 10k often.

[@TheDrewPeters]

I have a 23 z71 with the baby-max and i use DEF almost every 1000 miles, but it’s hooked to my work box trailer 95% of its life. AVG mileage is 15 MPG with a heavy load.

[@michaelyates4236]

I have a '23 LZ0 Z71, LTZ. Empty I see 32-35 mpg at hwy speeds. I've gotten as high as 41 mpg at 55 mph sustained driving. Towing our 4k lb. camper I get +/- 20 mpg. I previously had a similarly equipped 5.3L and didn't care for it much when it came to towing. It just seemed to work too hard. That one got roughly 13 mpg towing. I am very happy with this 3.0....except for one thing, who decided that it was a good idea to make it so the driver has to move the shift lever FORWARD for reverse?? It's electronic for crying out loud! They could have made it any way they wanted but nooooo. (Rant over.)

[@davidcrews6170]

I have the LM2, towing my 7k lb camper I average 12mpg. The winds play a HUGE factor in fuel economy; so much that sometimes I pull up behind tractor trailers to catch the draft, which always saves me about 3-6mpg. No joke

[@garydavis5336]

I have a 2020 AT4 with the LM2, nearly 97K miles by now. I have noticed, it get's phenomenal mileage at most speeds but any amount of wind hitting the front half of the truck absolutely kills the economy...

[@jeeprubi759]

I'm actually impressed! Seems solid. That squat 😂

[@davidporter7051]

this trim isn't geared for towing. it compromises towards off-roading, not towing.

[@MOHAWKAUTO]

That squat was crazy, but it handled well all same.

[@MOHAWKAUTO]

You’re correct and I thought I made sure to mention that in the video. Despite being built for off-roading, it’s still a truck and can tow as well as you’d like a half ton truck to be able to do. Although, I’d recommend air bags or something similar to help with stability and confidence.

[@slickcasner4205]

The ZR2 has springs like a marshmallow lol. Intended to soak up big hits smoothly. You like to see squad look at Ford equipped off-road trucks.

[@MOHAWKAUTO]

@@slickcasner4205 you’re absolutely right and I knew it would squat because of what it’s designed for. It honestly could be a lot worse.

[@KeepTheChange83]

I have the 2024 GMC 1500 a AT4X with the 3.0. I love it, but lift, tires, etc... driving from meridian to mountain home every day, I see about 22.5 -23 mpg depending on the wind and normally better mpg on the way to mt. Home. I will confirm that the wind plass a huge role.

[@charleskaufman5826]

The fuel economy is changing so much from the unloaded to loaded condition because of the size of the motor (3Liter). I have a 7.4L with a 38ft pullout trailer and gets 20mpg loaded or unloaded. Bigger is Better, depending on use.

[@MOHAWKAUTO]

You’re right. The 2500 and 3500 trucks don’t see the same shift in mileage because of the drivetrain. Which would be a better fit if towing bigger loads often. I have been getting 28 mpg in town going to and from work. I just towed a small camp trailer about 350 miles over mountain passes and the truck is reporting 18.8 mpg. For me, that’s a trade off I’m comfortable with as I don’t tow all the time.

[@charlesb4267]

A question to which I suspect I am correct on but wanted to make sure as per the ZR2, your truck has the fast gearing as per the 3.23 ratio correct ?. My understanding is that GM has not made the 3.73 ratio optional in this truck which with the larger tires and the expectation of a more off road oriented truck, is completely ass backwards to anything logical.

[@MOHAWKAUTO]

You’re correct that it has 3.23 gearing as I don’t believe you can get max trailering package on the ZR2. It looks like the 6.2 has 3.42 gears though based Chevys media page.

[@charlesb4267]

@@MOHAWKAUTOYes, that all computes with my findings. But as I pointed out the ZR2 is in a different category somewhat like a Jeep Rubicon for example and it comes standard with 4.10 but can be had with 4.56 or 4.88 gearing and yes all because its designed even more so for off road vs a regular Jeep Wrangler. I just don't understand what GM is doing and neither would the off road community.

[@PopCorn-ei5bj]

I got the diesel because the 5.3 and 6.2 have had a lot of problems

[@MOHAWKAUTO]

Reliability is one of the reasons I got the diesel also

[@trevorbatchelder4247]

I have a 2022 z71 rst crew cab towing the engine has plenty of power however I am debating about beefing up the rear leaf springs truck squats more than I'd like when towing 4 place enclosed snowmobile trailer but on the other hand pretty smooth ride on bumpy dirt roads 30mpg not towing 12.5 to 13.5 mpg towing depending on terrain

[@mowcowbell]

Wow, crazy high diesel prices up there. It's $2.93/gal for diesel here in OKC.

[@MOHAWKAUTO]

@@mowcowbell currently the lowest price is 3.25/gal for diesel. Which I’m pretty happy about. I wouldn’t mind it being lower though

[@estebandiaz3213]

Hola muy bueno el video,la Chevy duramax para mí es la mejor opción,los motores diesel son confiables y bajo mantenimiento saludos desde Córdoba Argentina 😊

[@BM-cz1xb]

How much oil does it use between oil changes,i don't care how much it can tow if its going to drink oil.

[@MOHAWKAUTO]

As far as I can tell, very little if any. I haven't noticed any drop and I'm getting ready to do the second oil change already with almost 8500 miles.

[@BM-cz1xb]

@@MOHAWKAUTO well maybe they addressed that issue, or maybe you got a good one

[@MOHAWKAUTO]

@@BM-cz1xb both are possible. There was a lot of changes and improvements made with the LZ0 from the previous LM2.

[@karlschauff7989]

@@BM-cz1xb The LM2 used oil and the source of the oil consumption was identified by GM. The valve cover is plastic and has internal chambers to separate oil from gases leaving the crankcase. An internal weld was defective and allowing engine oil to get pulled out through a ventilation tube. There has been a TSB out along with a new valve cover that fixes that issue. There are quite a few youtube videos that mention oil consumption with their truck that are totally unaware of the TSB.

[@CT-go5ii]

I have 3.0 2021 GMC AT4. I tow my 7400lb boat from TX to CA. 12 to 14 mpg was my average. Truck towed great I didn't even feel if the was a boat in back of my truck. I did used alot of DEF. It was in tow mode and I was told not to use the tow Mode. Tow mode uses more DEF. Don't know if thats true but I'll tow without the tow mode next time and see if there a difference.

[@Bertg1982]

It’s always a head wind going from Boise to mountain home lol my truck feels it all the time but coming back to Nampa is a breeze