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

I Review the 2024 Chevy 2500 HD 6.6L Gas L8T engine with the NEW 10 SPEED ALLISON Transmission. I go over the engine specs, horsepower, upgraded towing figures and perform a full towing review in the real world. I pull 14,000lbs behind this truck on my 120 miles towing loop to measure and compare acceleration, engine braking, power and performance, gear shifting and fuel economy. finally I give my conclusion as a licensed heavy duty mechanic on this new 10 Speed Allison Transmission with the gas 6.6L engine.

What I Use:

Towing Gear:

My Camera Gear:

I hope everyone has a good holiday weekend. I got the pleasure of driving this new 2024 chevy 2500 with the 10 speed Allison in it. as promised I put my loaded trailer behind this gasser and pull it down the highway.

I wanted to compare the upgraded 10 speed Allison transmission to the older 2023 6.6L gas engine that comes with the 6 speed transmission and see the differences of towing performance between both trucks.

the 2024 chevy 2500 with the 10 speed felt so much more alive and pulled stronger through the whole rpm range and through most different speeds when doing down the highway.

the biggest difference was the response and the downshifting when coming up hills. it made a massive difference and I think potential buyers are going to really like the upgraded 10 speed much more when towing.

overall when comparing the new 2024 chevy HD 2500 to the 7.3L Godzilla gas engine in the ford super duty. I think the gap is much smaller and both trucks are very comparable and able to pull those big towing numbers with ease.

I really like what GM has done with this chevy HD gas pick up truck.

[Johnman]

Gm gasser HD trucks are always so solid.

[iiffgqj]

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!

[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.

[austinkeen]

As a Chevy 2500 6.6L owner, I have to say, it's easily 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!

[Slckr]

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!

[Whiskeybende]

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

[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.

[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.

[evanwilson]

That rain certainly affected your fuel economy, more resistance.

[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.

[trentcarter]

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.

[tuffr]

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

[bigmountain]

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 🙏

[Back_door_bandit_]

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.

[psd]

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!!

[outfitr]

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.

[illinoistiger]

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.

[lkijuoz]

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

[cdy]

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.