Stress Test: 2024 Chevy Silverado HD Gas L8T + Allison 10 Speed Towing 13K Up 6% Grade For 5 Miles! 

Yep, imo the gassers are the only option unless some makes their $$ towing high mileage. Anything less than that niche' owner, in modern times the gasser is it.

Same here, full time or traveling back and fourth across the county, Diesel. For the guy like me who tows 9,000 pounds to OBX twice a year and camps within 300 miles of home 6 or 8 times, it’s 3/4 gas all day everyday! Gas trucks have come along way the last few years

You don’t drive much.

Guessing he forgot the K

Yep cruise control set at 50 and it would have done way better...way too fast to start off at..

I’m not sure how we have 10 speeds now and 3800rpm was that best choice at WOT…

@@breadcat6454Huh??

Perfect

Then slow way down and stay your self in the slow lanes behind the big rigs and stop weeving in and out of the slow and middle lanes .

Well said 👍⚾️

I have a 2024 2500 max tow. It doesn’t cost?94,000? If anyone thinks that is even close, needs to find another dealer. This truck really does a great job with my 13,500 lb fifth wheel, the Duramax is the way to go if you’re towing anything. Also gets 20 mpg combined when not towing. Beats the gas engine, I had one that got 15 at best.

​@cisco1dog Stop it cowboy, 20 mpg combined?

@@Rccrdawgs I have a picture of the dash, but the RU-vid won’t let me upload it to respond. Yes, when not towing, my combined fuel mileage is almost 20 mpg, like 19.7. I haven’t taken any long trips to call it highway.

I think you should do mpg test the right way and not count on the other way.

Go 3500

Me too my exact thinking, I have a camper that gets moved maybe twice a year…this looks like a solid option

What part of the country are you in?

Ontario

I agree with you. The only reason the trans got up to 210 is because he slowed down. I have the diesel my youngest son has the gas 6 speed and my oldest son has the ford 7.3. Gm’s 10 speed is the best. It keeps you in the right gear speeding up or slowing down. The six speed does as good as expected. The ford 10 speed is very busy.

@@billylee2312 the Ford 10 speed also runs much hotter. Most test show it being 20-30 degrees hotter than the GM. So based off JBs driving style he could have seen 230 or even 240 with the Ford.

@@matthewanderson9912 yes the ford runs 210 running down the highway empty. I think they are both good transmissions just designed a little different. The ford wants to be in the highest gear possible and the chevy just wants to be in the right gear.

My ram hits 210 on flat roads towing, usually over 190 just driving unloaded. The temp gauge was in the middle on the Chevy I’m sure it’s fine

I have a 2023 gmc 1500 duramax 3.0 and just cruising the temp is around 200

The Ford engineer said their 10spd was designed to run at 247° all day. That's a little scary coming from a Ram with a 68rfe. That trans doesn't like anything over 205°

My 6 speed duramax runs 180-200 all day empty. Towing it stays at 215-220 and peaks as high as 245 when towing 20K fifth wheel on big grades. Perfectly normal. I just service the transmission every 30-40K.

I bet it won't do well based on this review. I've got an lly and it does great at 10k plus towing. This review was bad at saying what elevation and showing the hill vs dash

Nope, the GM does not. No oil temp or coolant temp in actual deg just a cold to hot type bar gauge for the coolant. GM is behind Ford and RAM on the info center for sure. As soon as Banks releases the a pillar mount for the 2024’s i will be putting an iDash in my Denali 3500 so i can see all that’s info in real time.

They have the same exact frame, engine, and transmission. So I’d imagine yes.

Roughly. It depends on options & whatnot,and it’s VIN specific.

Some newer trucks are using service brakes or, at least, applying trailer brakes with cruise control on. Another RU-vid channel pointed out the trailer brake activating (indicated on the dash) during the downhill portion of the Ike. I think the conclusion was that it was vehicle and trailer & related to adaptive cruise.

@@jeffs2809I see. So the newer trannys will activate the brakes when it downshifts? I don’t think my 5 speed does that.

The 3.73s KILL it, 4.10s should be standard, 4.56s would be perfect!

Just to have the cam and lifters delaminate

@@Billybob50119 LOL or you could have a L8T and have to put a quart of oil in every 2000 miles.... Decisions decisions

@@ryanboytim896who is doing what?

​@@ryanboytim896never had that issue with the l8t. Definitely had Godzillas sitting around waiting for parts from the dealer though.

Source?

That duramax will still out pull the 8.1 by far, unless there's something wrong with it

@@jimbradd2783 my 2500HD Duramax lb7 runs excellent and it does have more pulling toque then my 8.1 gas. I like the 3500 for heavy loads

@@jimbradd2783weight of truck matters!

@@jfaulk5717 yes the weight of the truck matters. My 3500 Chevy 8.1 gas is a 4x4 crewcab with a long bed dually weighing in at 8,800lbs it’s a tank. It can handle a heavy load better and safer , I feel more relaxed and safe having 6 tires on the pavement to hold the load. And it has the 4.10 rear end gears and the smaller 235 - 75 R - 16 tires help with the pulling toque compared my 2500 Duramax that is a 4x4 Excab shorter 6.5ft bed and 3.73 read end gear and the taller 265-75- 16 tires. The 2001 Chevy Duramax came out with the 245-75-16 tires but for the better looks we put the taller 265-75-16’s which will cause it to loose a little on the power ( toque) taking off. My Duramax does have a K&N cold air breather which helps, I am going to put a K&N cold air breather on my 3500 8.1 also which will help in horse power and fuel mileage. I like both of my trucks. My 2001 2500 Duramax has only 105,000 miles on it and is a very nice clean sharp truck black in color and has been garage kept. Whereas my 2004 3500 8.1 gas has 265,000 miles on it which still runs super great a lot of those mile were put on it driving the interstate highway , last year I replaced all the parts to the front end that needed it and put 4 new heavy duty shocks on it, and new tires. So it drives and handles like a new truck.

U

Yes he put a reese goosebox on his camper.

JB's is converted to a gooseneck coupler but it is common to still refer to the style of RV as a "fifth wheel".

@@supporterofsanity ah ok, thanks for explaining

Yup it's a goose box. I got the GEN Y goose box for my camper so I didn't have to deal with the 5th wheel king pin. I like using my full bed and knowing that a goose neck is absolutely locked on is comforting. I've seen people pull off thinking the King pin locked and smashing their bed on their nice beer new truck.

I have a ‘17 ram 6 spd manual right now, my previous one was a ‘14 Cummins with the 68rfe. While the manual is fantastic with the exhaust brake, that ‘14 wasn’t too bad either and leaps & bounds better than the powerstroke. My company truck is a ‘22 f350 powerstroke, the exhaust braking in it is nearly nonexistent. It pulls great, tons of power, just very lacking with the exhaust braking.

not on a duramax, got one barely can tell it. my cummins well that is a different story it brakes

@@Hunterworks just got a 24 dmax myself. Big difference compared to the ram. Like you said, can't even tell

3500, can tell from the overload leaf springs

I transport horses with this engine for a living. I couldn't disagree more. My GMC 3500 DRW is perfect for what I do.

@@chadmiller6487 do you travel the country up and down mountains 20k-25k plus all year long. I doubt it. Some people are buying these 3 axle 5th wheel toy haulers and listening to folks say gas engines are the way to go. That is farther from the truth. You don’t have to agree, but it’s a FACT …diesels are the way to go for day to day heavy pulling. Enough said.

@@diamondhead203 my 2023 GMC 3500 is 8 months old and has 28k on it. I haul horses to/from MD, FL and Indiana.

@@chadmiller6487 cool story. Let us know the state of your gas engine when it hits 100k. My bet is if you run these trips daily-weekly….you will one of two things….sell it do to lack of performance or completely overhaul the engine. Our trucks with gas engines in the farming industry never lasted as long as our diesels. I don’t know why you keep rebutting my statements or challenging what I say. Everyone that knows anything about trucks and engines know diesels out perform gas and the diesels have a shelf life on average of 350-500k miles before major engine repair needed. Gas engines are capable of pulling…never denied that, but if you depend on your truck as a fulltime RVer and you pull heavy, it is highly intelligent of you to spend the extra 10k and get a real engine made for pulling.

@@diamondhead203 I always trade my trucks in before the 100k mile warranty expires. I'd never attempt to run a work truck into the ground and have to be responsible for all of the repair costs. I've also been in business for 21 years so I'm not looking to be educated. I know that my 2023 drw 6.6 gas is rated to pull 19k lbs which is as much as any 1ton diesel circa 2020.

It’s a gasser; of course it’s slow.

Who cares , it does the same on the flat ground that oil burners do...slower up hill doesn't matter one bit.

Exactly

Yes.

Gooseneck towing is 18,500 for them.

@@williamallen5369 my 2024 Max towing, which has the 3500 springs is 21600 srw. Gooseneck towing.

@@cisco1dog is this the gas or the diesel?

@@williamallen5369 mine is diesel, but It’s a 2500, I looked up the 3500, and it depends on the configuration what it will tow

Negative. There’s an rpm range. Have you seen dyno charts?

@@slaytanic921 yep. And ive owned 8, 10, and 6 speeds gassers. 6 speed has done the best

@@Thirty-OughtSick awesome! I have some short vids on my channel of my rpm and Speedo towing my 5th wheel. I’ll check and see if I got any footage climbing the Appalachian mountains. In the way up or down I pretty much locked my 6th speed in 4th doing 60mph. Plenty of power. On the way down I would lower the gears as needed so I wouldn’t have to touch my brakes. It did very well.

Double reply- I think the 10 speeds from gm are fine. They’ll help during climbs at various speeds and while merging. But that’s about it. On an open road the 5th and 6th gear on a 6 speed are similar to the 8 and 9 on a 10 speed. I stay mainly in 5th with tow mode but the truck will drop it to 6th if wind isn’t an issue.

As fast as that Chevy would go 😂

I was wondering the same. I think it would've maintained a higher speed if he didn't slow down before the steep section. I figured he just wanted to see if it could dig itself back out of the hole.

@@freedomisntfree_44 you’re an idiot. he coasted to slow down to 45 at the base of the grade and then went right when the grade started.

I tow at 70 with my ‘22 6.6 gasser towing my 5th wheel.