2024 Chevy 2500 HD 6.6L gas With NEW 10 SPEED Allison Transmission | FULL Towing Review

[@RichS-p6q]

Bought this truck after our 2017 ram 2500 Cummins left me stranded on Washington hi-way 28 last year. 78k miles on the ram when the def plugged up and the turbo controller malfunctioned while towing 9k pounds. Miss the exhaust brake but love this truck more in every other way. Smoother, quieter and more comfort. No more turbo engines or diesels for this family!

[@Timberjack.loggers]

I had same experience

[@edwardboyer7102]

I know dats rite I bought ah powerstroke an after all the towing an repairs fuk that I'm ah gas guy again

[@dylanluhowy]

I’m happy with my 2023. It’s the only new vehicle I’ve owned that hasn’t needed something fixed under warranty in the first year.

[@jimcurry5458]

My experience has been the opposite. I’ve been leasing or purchasing new Chevrolets for over 30 years. I don’t remember ever having a warranty issue during the first year.

[@austinkeen4577]

As a Chevy 2500 6.6L owner, I have to say, it's easily one of the trucks of all time!

[@thunderhorse689]

It undoubtedly is one of the trucks of all time.

[@CortJohnson]

I’ve been towing with the 6.6 and the six speed with a much lower weight - about 7000 pounds - and it’s been great. I don’t really care much about acceleration but I love our the low RPMs I get going uphill. That engine does not seem to be working hard. As always excellent objective overview - good luck with the new shop!

[@illinoistiger8694]

What kind of MPG do you get when you aren't towing? I'm hearing 15-18 is about normal for these. I'm considering either a 6.6L gas 3/4 ton or a 6.2L half ton with the max tow package. Our enclosed trailer is about the same weight (7500 lbs), but our boat trailer is even lighter.

[@Johnman3341]

Gm gasser HD trucks are always so solid.

[@Sl4ck3r84]

It's good to see GM update the platform, competitive offerings are important. Hopefully it keeps prushing the technology and capabilities forward. Also, CONGRATS on your own shop! Looking forward to seeing it get filled out in future videos!

[@TheGettyAdventures]

Thank you sir, perfect space for what I need atm, I think I'd eventually like to get something a little larger in future but excited to maximize my own space!

[@evanwilson3277]

That rain certainly affected your fuel economy, more resistance.

[@flamarlamb]

Yep. I always see a decrease in the rain.

[@mwavesdave]

We have a 2024 GMC 3500 HD. We have towed a 5000 lb travel trailer from BC to Nova Scotia, returned empty, and are now towing our 42 foot 5th wheel, 16,800 lb gross. The truck has been excellent throughout, save for the fuel economy. With the 5th wheel, after 2100 miles (through the US), mpg is 7.5.

[@TheGettyAdventures]

Thats awesome, and yes fuel economy is just not a strength of these big HD gassers lol

[@Johnman3341]

7.5 is decent. My old duramax got about that towing way less

[@Back_door_bandit_98]

I remember when you did the 60-110 test on the 7.3 gasser you were going slightly downhill when getting on the highway or whatever you call them over there.

[@bearhandfu]

A couple things about MPGs : yes, weather will adjust the friction of the tires and create resistance and will affect the cruise control. I have zero clue as to whether or not Canada regulates their unleaded with a “winter blend,” which usually impacts our fuel economy in the states. Added weight? I am guessing the trailer’s wood planks are not impermeable, and when you’re talking about that much surface area, the water weight is nothing to sneeze at. The winter/spring testing is valid and useful! It’s just not quite apples to apples.

[@daveallen7767]

We all get lower MPG in winter or cold spring temps. Air density higher so greater wind resistance, fluids like axle grease all have higher viscosity, and wind conditions change day-to-day

[@Back_door_bandit_98]

Definitely not a fair test I don’t get why these KZbinrs try to do these test when they don’t try to get the same weather conditions and the same trailer.

[@21psd]

Another great video! These 10 speeds when properly tuned to the engines they're mated with, allow the most efficiency out of any engine by basically keeping it in its best power band. Did you notice any gear skipping while towing?Congrats on your new shop!!

[@JohnSmith-ev1sm]

Love the review; I think weather plays a huge part in this test, you could have had a strong head wind going up that hill, and for fuel efficiency I bet you're still on winter gas. My bet is if you redid this in 3 months on a beautiful calm summer day like the 6 speed was tested at, you'd find better fuel efficiency and less RPMs going up that hill, as somebody who tows RVs very frequently there is a huge difference between wind/rainy days and calm sunshiny summer days. Still, obvious from your run here that it's a better truck all around.

[@MIIIB]

100%

[@trhediger]

Keep hustling; congrats on the shop!

[@illinoistiger8694]

It's basically a stroker 6.0L V8 right? That's almost certainly an extremely reliable setup. They've switched the Express and Savanna vans to this motor, and they've been very reliable in those applications. The Silverado LT and Sierra SLE with the 6.6L gas motors are probably the best values in the segment if you don't need all the luxury features that so many new trucks have these days. Dealers seem to actually stock those trim levels sometimes.

[@johncard-v1b]

Just bought this today the same truck you just drove looking forward to trying it towing my camper. I have a 2001 Chevy 3/4 ton 2500 HD with the 8.1 Allison transmission So I'm looking forward to see if it tows the as good as my 2001 I loved watching the test you did I will not be towing 14000 pounds My new camper weighs 6020 pounds

[@bigmountain7561]

Happiness is a 94 to 2000 3500 Cummins Turbo Diesel with the Manual and 4x4. Single Cab with a 24 inch frame extension and a nice little twin line wrecker with a nice stinger off the back. Always Michelin Tires and the new L.E.D. Light Setup so I can illuminate at night. My 94 was my favorite wrecker!!! Great Videos Thank You 🙏

[@MELOMEOUT]

Whats the gvwr on that? Older trucks don't have the weight specs new ones do.

[@bigmountain7561]

10,500 gvw, it was used for anything it’s size or smaller. We also had medium and heavy duty so the light ones were fun

[@techs1smh13]

Not driving anything with a clutch pedal in so ca traffic I did that 30 years ago. D MAX with allison.

[@Back_door_bandit_98]

Single cabs are gross😂

[@kuhndog-1196]

You gonna do a 6.4 hemi with the 8 speed? I'm a mopar fan so I would love to see that compared too.

[@TheGettyAdventures]

It is on the to do list sir! I think it would be a great comparison for these videos.

[@kuhndog-1196]

@@TheGettyAdventures awesome man! Looking forward to it.

[@durp2878]

I got a work truck with that engine I average 15 mpg highway and 13mpg city while empty , while towing its 12mpg highways and it’s 12mpg as well in city

[@mkennisebc]

Can you do a video on the ford 6.8 v8, im interested in the reliability of that vs the 6.6 Chevy gas power train.

[@hummyhero1484]

Maybe the cold and rainy weather has an impact on the engine performance compared to the weather when you tested the 6 speed transmission. I’m not saying it’s gonna make a huge difference but maybe some of a difference my mpg is less in the winter than in the summer not a lot but noticeable

[@Ben9073]

I’ve got a 22 6.6 gas long bed quad cab LTZ very happy with purchase

[@Whiskeybende]

I was surprised to see it maintained uphill speed while towing better than the 7.3! That's impressive!

[@trentcarter616]

I had a 2022 7.3l f350 it drive great empty. But with weight behind it. The trans didnt feel like it shifted when the motor wanted to or should. Of course the engine stated lifter ticking like a time bomb. FORD would stand behind it, so i sold it back to Ford (for a loss of course), and now im in the market for this truck.

[@tuffr2]

I am glad the gas engines have been improved. No DEF or DPI needed.

[@MIIIB]

Owner of 24' Custom trim Crewcab standar bed. . 2500. I don't tow a lot, but I am always ready. Paid $58K and has been an amazing truck. The 10spd give a lot more range and power points. The LT8 is a drinker towing but empty is not that bad, I do 16-17 mpg hwy and city 11-12 mp, and I have front and rear metal bumpers brush guard. Around 350 lbs, and diamondback back cover (200lbs). The trick for fuel efficiency is inflate tires. I do 68 front and 73 back , all 4 go ip 4 to 5 points once rolling. Bumpy ride but more efficiency and less tire wear. Is an HD truck, not a car. GM keep trusting the old school technology. Nothing fancy on Custom trim, normal gauges, no turbo, simply design, simple performance that have durability , no doubt. 6.6 LT8 vs 7.3 Godzilla, IMO the 6.6 goes beyond. Longevity, but the 7.3 has more power. Actual pulling numbers are insane. A beast of truck.

[@efeaster3680]

Agreed, but the 7.3 is bigger,and better, has a stronger frame,and out tows the chevy 6.6l even though it's a good truck as well.. but unfortunately ford is shooting themselves in the foot with there pricing.. I'm a ford guy,but my next truck will be a gmc sierra 2500 6.6l gas.. almost a 25+k price difference compared to a ford of equal standing....ridiculous!!

[@MIIIB]

@@efeaster3680 I had own Ford for long times. 87' 302, 96 300 manual, 02 5.4 2v, I leave my 02 expedition for the 24' chevy gasser juat bc ford prices and here in my town. There was nothing available . Just added a can catch fue to the direct injection. It's a must.

[@cdy291]

I got a 2024 GMC with this setup and it needed a power steering pump with 2,000 miles. The part was on back order and I got the dealership to give me a 2024 F350 7.3 instead. The GMC was nice and rode better than the ford, tighter turning radius. But I couldnt handle the issues.

[@TheGettyAdventures]

Damn, well the 7.3L is a solid option as well.

[@rns2222]

Huge congrats on your own shop!!

[@TheGettyAdventures]

Thank you sir.

[@ockgator]

What rear gears are in both trucks? GM only offers a 3.73 while ferd goes up to 4.30

[@slaytanic921]

3.73 is better for highway. The 430 isn’t necessary with the 10 speed. If you absolutely want the 430 then maybe it’s time for a diesel.

[@ReelinTension]

What’s your opinion between this set up and a ram 6.4. I looking hard at these 2 for my next tow vehicle.

[@bradstock2313]

The 6.0 and a 6 speed kicked the Dodge 6.4's butt in the Ike Gauntlet so this thing would embarrass it.

[@LindsayPeters987]

The shop looks great! Another well-done tow test

[@yooperdog]

Congrats on the new shop.🇨🇦

Pintle hitch is definitely the way to go.

[@outfitr9703]

Recently bought a 24 2500hd gas to pull our 6000 lb cargo trailer. So far so good. Love the tranny, coming from a 1/2 ton 5 speed trans. Also the ltz trim is really nice, would highly recommend.

[@DanielChesser]

I think the issue with mpg is the weather. I’ve noticed in Montana I get 7mpg average towing these mountains with a 2022, and the weather definitely affects the fuel economy.

[@yooperdog]

We have 2024 2500 hd also and love it so far. We tow a baby camper and it pulls great.

[@K_M_M_G]

7:02 - perform a dyno comparison between the two engines and you will probably see the 7.3 makes more power at a lower RPM compared to the 6.6 7:16 - in my experience driving in the rain, especially while trailering, fuel economy typically suffers more than a warm dry day Overall, good video!

[@prettybadboylagerberg6385]

I have a 23 with gas and 6 speed. I tow a TT at around 7k total weight. I get about 7-8 mpg towing. I do wish I had the 10 speed, but what I have makes towing this TT pretty comfortable and effortless. I will be curious of the reliability of the new 10 speed. If it turns out to be reliable, may have to get down the road. Thx for your videos. They are very informative.

[@86rustbucket]

Towing with a 24 Silverado 3500 SRW gas. Trailer is a toy hauler, bumper pull, just shy of 36’ long. Empty trailer weight is just shy of 10k lbs and GVWR is 13K lbs. truck does a good job, I would call it adequate. I get about 7.5 mpg towing and 14-15 empty. I don’t tow that often so for 90% of my miles, the gas engine is perfect. Previous truck was a 21 Ram 3500 megacab dually high output towing a 45’ fifth wheel toy hauler with a GVWR of 19,000 lbs and empty weight of about 15,000 lbs. I miss the diesel power and exhaust brake, but I don’t miss the maintenance cost, DEF, higher per gallon fuel cost, concerns about not if but when I’d have an emissions issue. In my opinion, I think the 6.6 gas with a supercharger tuned for torque (not screaming high end HP) would be a really nice option. GM has plenty of supercharger experience on small blocks, they could figure it out. If they did, absolute game changer. I’d think they would sell great for those that need a little more than the base gas engine. The other thought would be to punch this engine out to 7.0 liters, it could use a bit more ummph, that’s my only complaint.

[@fglocal5250]

Hey, I am trying to decide between an HD Denali gas or a diesel. I would rather the gas if i could put an aftermarket or GM supercharger. Have you heard of anybody doing it?

[@RobMcqueen-t5t]

Factory turbo or super charger would be great on a HD truck because in the mountain you can lose a lot of power due to thinner air. Plus a turbo would help with exhaust breaking.

[@fit4ya1975]

Thats why they make the Turbo Diesel.

[@Icutmetal]

@@fit4ya1975Exactly.

[@techs1smh13]

Mileage would be 500 yards per gallon

[@matthewanderson9912]

Nice review. I’m not surprised about the fuel mileage. I figured it would be potentially less because it’s going to keep the engine wound up more having more and closer gear ratios. You can see where the huge advantage is and that’s the gap between 2nd and 3rd on the 6 speed. It’s a pretty big jump there so I knew your 35-70 mph run would be much better. Not sure that the 0-50 will be any better though. Be similar anyways because again, the 6 speed just doesn’t have a good ratio between 2nd and 3rd gear. So 0-60 is fine with the 6 speed but above 60 mph you got a dead spot until you can get some rpm built into 3rd gear. The 10 speed has fixed that however obviously.

[@fscottgray9784]

I will be interested in the new 6.7 Liter cummins gas engine. If Ram replaces the 6.4 with its 660 ft. .lbs of torque it will be a gas monster.

[@AK_Ray]

It'll need all that torque to push around a 1000 lb. Gas engine 🤣

[@miltonzinn8732]

560 on Cummins site, but that’s semantics. I could see dodge keeping the torque the same and upping the power output from 240 to like 360-400.

[@fscottgray9784]

@@miltonzinn8732 TFL reported 325 hp and 660 this morning

[@ethanyates28]

@@fscottgray9784must be pretty low rpm

[@Dazza-u4c]

@@miltonzinn8732Dodge ? 🤣🤣🤣😂 Dodge had had zero to do with Ram’s since 2010. (3rd Gen ) They have been built by Chrysler since then .

[@mariotoro8437]

Hi, Did you have an idea if the oil consumption issue was corrected on 2024 models? Tks

[@dougandjenniferjohnsonministry]

We would like to know about this as well.

[@davisfamilyshenanigans4807]

I need to know. My 22 burns 1.5 qts per 5k miles. I need a second truck but not if it’s burning oil like mine.

[@mtnhunter4903]

Our shop has 6 of these trucks towing etc is good mileage 12.5 at best but all but one burn at least a quart if not more of oil every 1500 hundred miles all have under 30k but they one has roughly 70 k it burns 2 quarts

[@twinforce_fusion6560]

Long live the gazer engines.

[@davidbrenneman2857]

Congratulations on the new shop!

[@dalemckay3307]

Did they fix the oil consumption issues in 2024?

[@jimmywu12345]

Hi, great video, can I ask a question? I have the same truck , do you think I need put an oil catch can for this engine? I was thinking maybe occasionally use Shell premium gas , it maybe can help clean the intake but not 100% sure 😂. Thanks

[@88corinutza]

My 8 year old 2015 Silverado 6.0 gas 4:10 rear end 4 door 4x4 Dually that only has 75,000 miles on it is a POS gets 12 MPG empty and 6 MPG pulling our 10k TT And it goes up hills 40 mph SCREAMING in 2nd or 3rd gear lol

[@alan_walker102]

I had a '22 6 speed and now a '24 10speed truck. I tow a 15000lb toyhauler. I find the ten speed tows better and gets better mileage NOT in tow/haul. I still turn it on for long down grades, or in town because the engine braking works better, but I see 1 full mpg better running in regular mode vs tow/haul. tow/haul in the ten speed is overkill because of how aggressively it shifts in normal mode in my opinion.

[@LotsOfPaypa]

Say goodbye transmission… you are doing it wrong all just for a couple mpg…

[@alan_walker102]

I'm afraid you don't understand what you're talking bout here. Yes in the old days with no trans temp gauge and a 700r4 jumping in and out of overdrive I would agree with you.

[@LotsOfPaypa]

@@alan_walker102 I don’t think you understand that the torque converter lockup should not engage while towing. The thin metal is not meant to engage the lockup with heavy weight behind it. They break and fill the fluid with metal chunks and RIP transmission. 🤦🏻‍♂️

[@MADAmechanical]

​@@LotsOfPaypa while cruising, the torque should be locked up to prevent heat and give you 1:1 ratio for better fuel mileage. They have been locking up torque converters for almost 75yrs

[@meko1896]

@@MADAmechanicalYeah, I think @LotsOfPaypa got that backwards. In tow/haul mode the torque converter locks up in all gears past 1st. At least that's the way the DuaMax and the Ram Cummins work. It allows the tranny to work more like a manual and prevents heat buildup from fluid compression.

[@mikedurling2111]

Congrats on the shop!

[@ojbarberena7090]

Congratulations on the shop.

[@TheGettyAdventures]

Thank you sir!

[@mauriceracicot6010]

I might of missed this. But, how does the 6.6 10 speed compare to the 6.4 8 speed on this same tow? Thanks

[@2lopezd]

Just curious did you reset the trip meter after your 0-30 runs? Also personally I don’t mind when the truck slows down some even if its like 5-6mph just because where I live the rolling hills it’s annoying having the truck downshift after it slows down by 1mph. I usually only buy GM products decide to try a Ram granted it’s just the 1500 platform for both GM and Ram but the ram is so annoying hearing it down shift after it slows down by just 1mph

[@TheGettyAdventures]

Yes, those 0-30 runs were all done before I hit the highway. And thats fair, I guess its more a personal preference. these hills are pretty lenghy so the truck is going to have to downshift no matter what and I hated seeing the truck just drop speed and lug down before shifting. alot of big semi trucks with automatic transmission will do that to save fuel economy and it we get alot of drivers complaining about it.

[@2lopezd]

@@TheGettyAdventures I could understand that too just seems trucks even HD trucks are becoming more and more daily vehicles for people then years ago when they were seen more as work vehicles so I’m sure the manufacturer has to try and find a happy medium. BTW I appreciate all your reviews keep up the good work. I’ve been trying to decide on a new HD Diesel truck just been doing a bunch of research before I decided what route I want to go. I love the 6.7 Cummins especially the sound of it. Really like that ford offers the “consumer” F-450 with a bed just because of the wide front track just do not like the exterior design of the new super duty trucks at all though but just absolutely look the look of the GMC Sierra trucks!!!!!

[@1958johndeere620]

The rolling resistance on a wet road is higher than a dry day.

[@aarsenalfan]

Allison "branded" 10 speed transmission you mean ! 🤣 Congratulations on your Shop. 👌👍

[@bradstock2313]

Correct, there is nothing allison about it.

[@jasontudor]

yup here we go with these guys

[@5858mjt]

Would you put your name on an unreliable employee at work? Nope… I have confidence in Allison branded as you say!

[@shadmatheson744]

The engine revs higher to utilize the gears better and keep everything cooler. Flows more air and fuel.

[@techs1smh13]

Uses more air.....and fuel

[@Icutmetal]

Thanks for the info, Capt. Obvious.

[@Chomchomz]

Mine burns oil not even towing. Love my 2022 2500 gas but really disappointed in the oil problem

[@RolandKalisch]

I tow a lot but with a half ton 6.2. Wet pavement with standing water makes a massive difference on rolling resistance, there's quite a few wheels on the whole rig. That will affect both mileage and power required to pull that load. This needs to be done again on dry roads.

[@charlesb4267]

That was my exact thought, the mileage suffered from that wet road, there is a lot of extra drag with truck and trailer tires having to push water out of the way. I was surprised at the performance improvement given the adverse conditions. Hard to control the weather and no doubt limited time/chances to do the test and have access to the truck.

[@TheGettyAdventures]

Potentially might do this one again, the weather was garbage as you guys saw, but yes sometimes it's tough to line these trucks up, either way it was very obvious that the 10 speed was a much more capable truck.

[@RolandKalisch]

@@TheGettyAdventures Thanks, I really enjoy your videos and opinions. I do understand the complexities involved. I certainly don't mean to be overly critical, hell it might even be easier to get the Ford out again in wet weather. 😂🤔 Congrats on your own shop.

[@Shawn-ik6dr]

Diesel has a place, even small 3 liter ones. That place is for heavy towing, work, and long drives where that engine can do it's Regens in peace. Once you take away that criteria you end up with a clogged diesel that can't, and won't, do it's normal life cycle. I'm facing that dilemma now, and knowing that I drive 60 miles roundtrip daily, I can't do a full, uninterrupted, Regen during my commute I'm stuck buying a large gasser. Yes, I'll pay more for petrol but it's less expensive than an engine teardown every few years in the long run.

[@mojorisin7371]

GM interiors are getting better for sure. GM makes some great engines so not surprised this truck did well. I still prefer a diesel for towing. The 6.6 diesel should be a better fit. Not a fan of GM but they are improving in technology so we'll see if it turns into longevity ✌🏽🇺🇲

[@TheGettyAdventures]

I got the 2024 duramax this week, so we'll see how much better it tows.

[@JROC734]

Not sure I can agree with you there. GM actually innovates more useful technologies than most any other OEM. Since the new millennium GM's developed, and introduced MRC, (Magnaride Control) 4A (4 wheel auto), composite beds. The multimatic tailgate is the best in the business IMO. The steps in the bumper, and side of the bed are ugly, but extremely useful. I prefer them to the tailgate steps in me and my wife F150's. GM camera systems have been copied by all the truck OEM. GM invented the rearview camera mirror. When talking performance cars with manual transmissions they introduced no-lift shifting, as well as auto-rev matching. They've taking the OHV playform to the next level, and the GEN5 SBC is a very modern engine. (I just wish they'd dump their crappy DOD, and adopt dual port injection) Still GEN3 Coyote even took some que's from the GEN5 SBC in Ford added nodular main caps, they went from 11mm to 12mm head bolts like the GEN5 SBC did from LS in 2014. GM is actually a very innovative company that introduces a lot of new technologies that other automakers copy.

[@mojorisin7371]

@@JROC734 I can concur with most of what you said. But I never said GM wasn't innovative, they are just not as reliable considering their great innovations.

[@Backyard_KLX]

My 2023 just recently got a gap in the a pillar, right where it meets the ceiling. I’m pretty upset, I’ll be trading that in for one of these hopefully. I’ll try Gm one more time .

[@mikemurphy2764]

The fuel economy is odd. I wonder if there were other circumstances that made a difference. Wet road , tire pressure?

[@levijenkins2758]

I don't believe it's actually an Allison. From what I understand, Chevrolet built the transmission with some pointers from Allison along the way which allowed them to put their stamp of approval on it. Can anyone confirm this?

[@Flipper56489]

Your thoughts on the 4:10 doing the same test.

[@jwwhetzel2737]

Question My 2024 6.6 gasser has a loud whine in drivetrain under load between 70-80 mph. Not w coasting but returns as soon as load returns. Are you or anyone else having same issue?

[@dunedigger5406]

These are being reported getting better mpg after 1500 miles on the engine. What is the miles put on both trucks for comparison? Also rain and wind will effect mpg

[@6.8SuperDutyDriver]

I'm thinking about getting a new Chevy/GMC 2500 4x4. The smaller Crew Cab and Short Box version. I don't tow much more then 7k lbs. I really only need a 3/4 ton because I plow.

[@jamesely6369]

I use a 2002 GMC 2500HD with a 6.6 Duramax w/202,000 on the clock. I pull a 12,000 lbs fifth wheel RV and am thinking about upgrading my power unit. I am with you on the diesel emissions problems as I don't need those headaches while towing. I am thinking the Ford 7.3 Godzilla w/10 speed Allison but just caught your 6.6 GM w/10 speed Allison test and it intrigued me. Wondering which one you would prefer if you were buying, I know there's a lot of variables but in general which one would you prefer? If I buy a gas unit I would have to have the 4.30 rear gear to help over come the power loss from my diesel.

[@TheGettyAdventures]

You said exactly why I would go with the Ford . the option of 4.30 gears. these are HD gassers you aren't getting good fuel economy so might as well get the aggressive gearing for increased performance. Also the 7.3L is putting out more power and ford even speculates that the power ratings may be slightly under what the engines are actually putting out. when I pulled with the 7.3L with 3.73 gears I was very impressed. myself I drive a 6.4L hemi with 4.10 gears and out of all three trucks the 7.3L has the best towing performance in my opinion.

[@jamesely6369]

Thanks for your reply I appreciate it and will keep this in mind as I continue my research

[@jaygr306]

Pulsar emissions intact tune for l5p 1/2 hr install 5 tunes switch on the fly .1200 hundred installed with c t s add 150 hp and 200 tq. If I remember . right Thinking of doing it to 22 hd at4 duramax

[@boatmansouthcarolina1735]

i have a 2024 6.6 gas very happy towing a 9000lbs skid steer and a 6000lbs camper the 10 speed is the ticket. I just cant deal with the new emmions on these desiels so many issues

[@chrismartinez6415]

@@boatmansouthcarolina1735 Curious on mpg's on both your 9k and 6k rigs? I'm seriously considering 6.6 10spd and have a 6k camper as well, thanks

[@ALMX5DP]

6:50 I think if it shifted to (7th gear?), it would have dropped RPM to around 2700 which may have been too low for that particular condition. At that specific speed, the 6 speed might have had a better ratio to keep it in the lowest possible rpm for the given load.

[@TheGettyAdventures]

Ya that's what I was thinking after when looking over the footage. Either way the 10 speed made a very nice difference.

[@MARINE1FORCE6425]

How does this compare to the Power Wagon on performance, milage and towing?

[@eatp8nt]

Even though this is an old comment. Power wagon and towing should not be I'm the same sentence. I made that mistake as has JB reviews. Don't get a powerwagon if you ever plan on towing more than a few thousand lbs

[@gnls3827]

Looks like it was significantly colder on this test vs the 6spd test. My current 6.2l 1500 uses a lot more fuel when its colder out.

[@tombair1]

I wonder if you have all the data to let us know how many miles we have to tow with a diesel before it makes sense, also which one would you pick on the gas side?

[@TheGettyAdventures]

It doesn't make sense anymore, a couple years ago I drew up a comparison between the cummins and the 6.4L hemi and you would of had to drive the cummins like 800,000kms to break even. assuming nothing broke. diesel prices are not as high now but diesel engines are hard to justify in terms of a financial point because in almost all situations they will cost more money to run and own.

[@chadmiller6487]

I have 57k (now 75k) miles on mine. Only issue has been the piece of junk infotainment system glitching..

[@lauderdalechad]

Is ram not in the mix with these tow test reviews?

[@nickf5204]

Fuel economy, summer vs winter fuel will make a big difference

[@jordangiesbrecht05]

great video!

[@TheGettyAdventures]

Thank you sir.

[@jamesdavidsmith4033]

All good, assuming reliability is on point.

[@GMtransmissiontech74]

It’s only a hood badge. The transmission is a Ford Based transmission. Not a Allison.

[@GMtransmissiontech74]

Your comparison is to the 6L90 transmission not the 6 speed Allison.

[@edwards6431]

My GMC 2500 AT4x with this engine and transmission gets 9.8 mpg around town, 11 to 13 mpg on the highway, and 8 mpg pulling a 21-foot open bow boat. This is not enough performance for the bad gas mileage. If given the opinion again, I'd go with the diesel.

[@avioncamper]

Hi Alex, does this engine have that stupid cylinder deactivation ? I thought increasing the number of transmissions speeds would increase mpg? BTW, when does the snow melt in NB? In NC it was 84f today, mowed the yard and enjoyed some warm weather :) Have a great week, Greg.

[@H2ODiver_Down]

No, as of 2024 GM HD trucks do not have cylinder deactivation. That's why I'm buying one! I will never own another half ton that has it!

[@jaygr306]

The new 6.6 gas doesn't even know my 7 ton equipment trailer with my Grand L kubota is even on it and 81/2 foot XV 2 fisher v plow doesn't even sag and goes down the road like normal whith that plow weighing over 1,000 lbs . It isn't my 22 HD Duramax AT4 but onlly notice a difference when towing really heavy

[@fastgixxer1252]

How many miles on this truck?

[@jjcastleberry3662]

Seems 10 speeds made a difference.

[@TheGettyAdventures]

Ya I was happily impressed. Seems like a great decision from GM.

[@hitempguy]

That was a really weird loaded pull from 60km/h It didn't downshift, even though it's a 10 speed. It literally did the entire pull from 3500rpm to 6000rpm, from 60-90km/h. Seems the truck is in desperate need of a tune just like the 6 speed trucks, which are also way better with a transmission tune

[@TheGettyAdventures]

very likely, either way I was still impressive with the overall performance gains.

[@toenails.]

The 6.6 would be so much better with a 4.10 axle ratio.

[@gordonborsboom7460]

Could the high revs on the highway be a result of transmission learning from recent driving? Colder weather could account MPG difference. Fords seem to do better in diesel and gas MPG.

[@TheGettyAdventures]

the cold weather is certainly a factor, I thought it wouldn't be that big of a deal, being about 15 degrees of difference but who knows.

[@sranney1]

Watched a KZbin guy had to retrofit the Allison tranny Gm hasn’t a fix, his fix was an after market

[@paullambert6485]

6.6 may not pull like the 7.3 but it you will still be on the original 6.6 when the ford guy is on his second engine. legit.

[@pjbuckmaster]

You’ll go through several transmissions before the ford needs a new engine. Legit.

[@ans05]

Bro the ford 7.3 and 10 speed failin apart left and right.

[@MendicantBias1]

The 6.6 10 speed Allison are falling apart up and down

[@jimmyneutron3055]

6.6 has cylinder deactivation last time I checked just like the 6.4 hemi in the ram. My company uses these for our porch/ deck building contracts and 2 of them is in the shop already for electrical, check engine light, and backup camera issues already. Made in Mexico in the silaos plant Last I checked 7.3 and 6.8 both get better mpg and run on all 8.

[@MendicantBias1]

@@jimmyneutron3055 the L8T does not have AFM or cylinder deactivation.

[@ericj810]

Jump from a 8 speed to a 10 not that different but on the bottom end. Jump from 6 to a 10 huge difference in the middle.

[@jmfarms3555]

Back in the old days with small motors and big truck. The trucks had many gears and the saying goes. You don't drive the truck by the engine but with the transmission

[@1958johndeere620]

If they want to compare a gas engine to the duramax they are going to need more cubic inches. They had 496 ally combo early in the 2000's . Lets do it again. You will never beat a diesel with a gas, but you need high cid to lower the torque curve.

[@code4forlife]

Not An Allison Transmission This Is A GM Built Allison Blessed Transmission

[@KSN2019]

Making it an Allison transmission, they own the rights

[@BG-vq9fd]

I have a 5.3 6 speed Suburban and a 6.2 10 speed AT4. The 10 speed feels better. I know there are a lot of differences but I would consider trading both for a HD AT4X 6.6 Gasser.

[@2eagle86]

Damn i was like 110 mph then i seen hes Canadian 😄

[@davisfamilyshenanigans4807]

Ya I was trippin

[@santiagogomez1254]

Same lol

[@Doug-gp2qw]

I always compare Chevy and Ford when looking for a new vehicle. Fords out the door price has always been lower, sometimes by more than $7,000.

[@karlschauff7989]

That hasn't been my observation in my area. Must vary by region.

[@danold6443]

How many of you guys "actually" tow large with these beasts? I know where I live the small trucks are just family cars these days, maybe the odd off road trip (4wd required). Towing is a big selling point but I just don't see that many towing 2 ton+ on a daily basis. Is it a case of yep I can but will never do it?

[@TheGettyAdventures]

It would be an interesting stat to see how many miles the average HD truck owner actually tows. My guess would be pretty low but a capable pick up truck is the biggest tool in the tool box

[@Liimpy]

I own 4 trailers of various sizes and uses.. I don't need to tow every single day, but I want to camp, I tow my camper, if I need to haul gravel,or dump runs, I haul my dump trailer, if I want to go ride my side x side ,I haul my atv trailer.. sometimes I just throw shit in the bed.. the point of owning a truck is to have the availability.. not tow every day.. I do have a truck for work, that's had a trailer connected for about 100k miles, but it's for a specific reason, work

[@bigmurph1447]

The guage is different from the 2500 to 3500?

[@Backyard_KLX]

The Pro base models have that standard gauge cluster.. the better trim levels have the digital ones.

[@bigmurph1447]

@@Backyard_KLX I know that but my 2024 3500 is different it has the digital dash. The speedo and tach is different

[@MisterMikeTexas]

The HD Chevys are much better looking than their half-ton siblings, imo. The HD's look like trucks!

[@garyhenson7785]

If you do a little research, Allison did not build that transmission for GM. Allison‘s allowed GM to put their name on it. That transmission was designed between Ford and General Motors GM. Got permission to use Allison‘s transmissions name on it.

[@TheGettyAdventures]

I touched on that in my last video. a little deceiving I would say from GM but it is what it is.

[@Weak_juan]

Put the Allison badge on the Ford

[@PopCorn-ei5bj]

The 1500 and f150 use the same transmission

[@Liimpy]

Only a ram bro would care.. lol

[@slaytanic921]

@@PopCorn-ei5bjit’s a different transmission in the half tons.

[@chriscota1635]

Others have mentioned it, but it’s definitely the weather conditions making the fuel economy worse. The test it the same track with the same trailer hauled… but added water weight and water resistance on the road. It’s not apples to apples. Even my hybrid RAV4 gets worse mileage in those weather conditions. The fact is it did well towing in adverse weather

[@TheGettyAdventures]

the colder air was probably the biggest factor for fuel economy. either way it was pretty evident the 10 speed made a big difference.

[@CreditviewCarpentryLtd.]

Owners manual says dont tow heavy or rev the motor high before 800 kms on the truck, and i believe the truck should be fully broken in around 8,000km - 10,000 km fuel economy get alittle better

[@TheGettyAdventures]

That's why you don't buy a used rental truck 😉 but yes as the engine breaks in the economy should get better.

[@CreditviewCarpentryLtd.]

@@TheGettyAdventures yes this is a good point 🤣

[@vaughnbay]

If you are going to report your test results for an American vehicle on US roads in metric, then take your testing to Europe. Use MPH and MPG.