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I’m Done With My Chevy Silverado RST Rocky Ridge, 15K In, and I’m Putting In My 3rd Motor, I Just Picked Up This Bad Boy, a 2024 GMC Denali 3500 Ultimate

A 2024 Chevy Silverado owner is done with his truck due to three engine failures in under 15k miles. He purchased a 2024 GMC Denali 3500 and loves it, so far. Will he have fewer problems with the GMC Sierra than the Chevy Silverado? Let's check it out. 
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Author: Denis Flierl
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Should you buy a GMC Sierra or a Chevrolet Silverado pickup, and what's the difference?

Imagine putting three engines in your 2024 Chevy Silverado 1500, and it has less than 15,000 miles. I would be done after two engine replacements. A Chevrolet Silverado RST Rocky Ridge owner, Bob Barnes, experienced more problems than one owner should have to deal with. 

He bought the Silverado RST Rocky Ridge because it had a 6-inch suspension lift, custom wheels and tires, a custom grille, fender flares, running boards, and a cat-back exhaust system.

On the GMC Denali Diesel Duramax Owners Facebook page, he shares his dilemma. 

He says, "I'm done with my 2024 Chevy Silverado 1500 RST Rocky Ridge. I'm putting the 3rd motor in it this week with less than 15k!" 

"I just picked up this bad boy and couldn't be happier. It's a 2024 GMC Denali 3500 Ultimate with 37s on 22s, Cognita lift, pedal monster, and a bunch of other minor mods. I couldn't be happier."

What are the differences in engines between the 2024 Silverado 1500 RST Rocky Ridge and the 2024 GMC Denali 3500 Ultimate?

Bob continues, "I love the color. It has a full PTFE clear coat wrap and a bunch of other minor mods. The Pedal Monster in Track mode is a hoot. The 6.6 turbo puts my 6.2 to shame, and the options with the Ultimate are insane. I'm still finding new things every day."

Bob's 2024 GMC Denali 3500 Ultimate

Now, imagine getting out of the Chevy Silverado and into the GMC Denali. The GMC Denali is an upgrade over the Chevy Silverado.  

The Silverado 1500 RST is a more performance-oriented trim, focusing on sporty aesthetics and features, while the Sierra 1500 Denali is positioned as a luxury truck with upscale styling, premium materials, and advanced technology features. 

Bob loves it initially, but the big question is whether he will have fewer engine problems with the GMC Sierra than with the Chevy Silverado.

The 2024 Chevy Silverado 1500 RST Rocky Ridge comes with the 6.2-liter EcoTec3 V8 engine. This engine is known for its powerful performance, offering 420 horsepower and 460 lb-ft of torque, making it ideal for towing and other demanding tasks, according to Fox Factory Vehicles

However, Bob knows firsthand that the Silverado's 6.2-liter V8 engine has had significant problems—three engines in less than 15,000 miles.

The GM Engine Recall

Both the 2024 GMC Sierra and Chevrolet Silverado, along with other GM models, have been recalled due to potential manufacturing defects in the 6.2-liter V8 L87 engine, according to WBIW. These defects can lead to loss of propulsion, engine damage, and failure, significantly impacting the reliability of these trucks. 

Owners of both trucks have reported issues, including excessive oil consumption, lifter failures, and turbocharger problems, in their diesel models. 

The GM 6.2-liter engine problems are related to unspecified manufacturing defects in connecting rod and crankshaft components. The recall applies to the Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe/Suburban, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV, but only for model years 2021 through 2024.

Does the 2024 GMC Sierra have fewer engine problems than the 2024 Chevrolet Silverado?

Bob's 2024 GMC Denali 3500 Ultimate has a 6.6-liter Duramax turbodiesel V8 engine. He says it puts the 6.2-liter engine in the Silverado to shame. It should because the Duramax diesel engine delivers 470 horsepower and 975 lb-ft of torque. 

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A significant difference between the Silverado's 6.2-liter gas engine, producing 420 horsepower and 460 lb-ft of torque.

Back to the question, will Bob have fewer problems with the GMC Sierra?

Some 2024 GMC Sierra 3500HD models, particularly those with the Duramax 6.6L V8 L5P engine, have been reported to experience engine-related issues, including stalling at low speeds or while idling.

GM Authority reports that a bulletin has been issued regarding potential stalling issues with specific 2024 Sierra 2500HD and 3500HD models equipped with the Duramax turbodiesel 6.6L V8 L5P engine. 

The 2024 GMC Sierra HD with the 6.6L Duramax turbodiesel V8 engine has not been recalled for the same issues affecting the 6.2-liter engine. 

The GM 6.2-liter engine problems are related to unspecified manufacturing defects in connecting rod and crankshaft components. The recall applies to the Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe/Suburban, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV, but only for model years 2021-2024.

Conclusion:

Bob will likely experience fewer engine problems with his 2024 GMC Denali 3500 Ultimate than he did with the 2024 Chevrolet Silverado RST Rocky Ridge he just traded in. 

He already points out the Sierra Denali's luxurious features and the added power and torque, which are unquestionably superior.

What About the Banks Pedal Monster?

Bob's Sierra Denali 3500 is equipped with a Banks Pedal Monster that significantly enhances throttle response. This aftermarket feature is sure to add a fun element to his driving experience.

Will adding a Banks Pedal Monster to a GMC Sierra with a 6.6-liter diesel engine void the manufacturer's warranty?

Adding a Banks Pedal Monster to his GMC Sierra 6.6-liter diesel does not automatically void the vehicle's warranty. However, if the Pedal Monster causes a failure in the vehicle's systems, the manufacturer could deny warranty coverage for that specific issue. 

Banks Power reassures customers that their products are "warranty-friendly and do not leave a footprint after removal."

Bob made a wise decision to move on from the 2024 Chevy Silverado and opt for a 2025 GMC Sierra 3500 Ultimate. He will have more power and should have fewer engine issues. At least he hopes. 

How About You?

Do you own a GMC Sierra with the 6.6-liter Duramax turbodiesel V8 engine? Has it been a reliable engine? If so, click the red Add New Comment link below and let us know.

Check out my Chevrolet Silverado story: I Bought a 2025 Chevrolet Silverado LT Trail Boss in March, and This Thing Is a Piece of Work. I’ve Never Had This Many Problems With a Truck in Such a Short Time

I am Denis Flierl, a Senior Torque News Reporter since 2012. My 30+ year tenure in the automotive industry, initially in a consulting role with every major car brand and later as a freelance journalist test-driving new vehicles, has equipped me with a wealth of knowledge. I specialize in reporting the latest automotive news, covering owner stories, and providing expert analysis, ensuring that you are always well-informed and up-to-date. Follow me on X @DenisFlierl, @WorldsCoolestRidesFacebook, and Instagram

Photo credit: Denis Flierl via Bob Barnes

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Comments

BP (not verified)    July 26, 2025 - 8:10AM

Dennis - let's have the customer send you the VIN for this truck and you can send to me to verify it had 3 engines replaced in 15,000 miles. I find the possibility of failures at that frequency incredibly unlikely.

I've been a GM Mark of Excellence service advisor for several years and a tech with my hands in the LT and LS engines for 15 years before that. AFM lifters and now bottom ends don't fail at that frequency, at least not without some help.

Yes they fail, yes they fail more often than they should, but not 3 on the same truck in 15K. Our dealership services about 70 vehicles a day, many 6.2 engines, and we've had 3 failures total since the campaign started and an additional 3 that failed the knock test. Don't forget the campaign stretches back more than 4 years of production. That's 6 of probably 30,000 6.2 vehicles I've personally seen.

Further we sell fleet and have a ridiculous number in the field that have not returned due to noise, low oil pressure, knock codes, or failure. So far the hype is not following reality.


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Steve (not verified)    July 26, 2025 - 12:22PM

I have a 2024 GMC Denali ultimate with a 6.6 L Duramax diesel. I’ve had no problems at all with it so far.

James (not verified)    July 26, 2025 - 12:47PM

If these guys want to keep throwing big money away throw some my way. I can't believe after all the failures and problems they've had they still buy anything from GM. I own a Ram and I'm perfectly happy with it at 180,000 miles. No engine or transmission issues at all.

Mike (not verified)    July 26, 2025 - 1:15PM

Bought a new Chevy truck every 2years. Had a 2013 with AFM . What a joke. Fought Chevy 3 years till they put in a new engine. Got it back. Traded for a RAM .been happy since. Kiss my ### Chevrolet. Keep your junk!!!

Steve C. (not verified)    July 26, 2025 - 6:14PM

I have owned a 2003 6.6 Duramax GMC 3500 dually for 22 years.. About 7 years ago the alternators idler pulley sized up destroying the serpentine belt. That has been my only mechanical failure in 22 years. The instrument cluster required a rebuild ($182) 3 months ago. Also 2 transmission shift cables. $80 each. Michigan winters haven't been kind to the bumpers and can corners however. The box has zero rust holes. Lots of dents from hard use. I am very pleased with it. It rarely leaves the driveway without towing at least 16,000+ pounds of gooseneck trailer and cargo.9

Charles Holden (not verified)    July 26, 2025 - 7:37PM

I bought my 2018 Chevy Silverado brand new 10 miles on it. As of today, it has 188713 miles it has a 5.3 L with a six speed transmission. Neither the transmission or engine has been touched. I do not baby my pick up. I pull trailers loaded with John Deere tractor and various other hauling . I have change my brake pads only once .just put my third set tires on it. Change my oil between 6000 to 7000 miles. Repairs l have done are the shutters on the front. The AC condenser. Radiator and all new hoses. The truck still has the original speed limit and RPM limiter.my 2005 Silverado was the best same engine and transmission. I traded it in for a 2013 GMC Sierra 2005 had 268,000 when I traded it in on the sierra. Again, engine and transmission never touched. so I don’t know what these people are doing to their Chevy trucks. but I can tell you now all that aftermarket bullshit you put on big ass tires programmers they are the cause of all your problems.

Brian Fowler (not verified)    July 28, 2025 - 9:55PM

In reply to by Charles Holden (not verified)

I own a 2019 GMC Sierra AT4 5.3L with 8 Speed with 91,700 miles. Have horrible shutter and thought it was the Brakes as they had not been changed. Changed brakes and Shutter is worse. Deep dive on web and found its the transmission fluid which is OIL Based fluid can and does absorb water, which causes the shutter in transmission.
AMISOL ATF Blue claims to cure this shutter by using a TOTALLY SYNTHETIC fluid.
11.4 quarts (3 Gallons), transmission filter and gasket.

Andrew (not verified)    July 26, 2025 - 9:15PM

Great! You went from failing engines to failing transmissions that downshift to first or second at highway speed. Congratulations

Tracy Barrett (not verified)    July 27, 2025 - 6:59AM

Chevy can kiss my #$@! I have never seen a company have such poor quality products, poor customer service and the attitude I don't give a f#=÷. After spending months going back and forth with head office, 2 dealerships, 100s of calls we finally took our 2020 silverado to the end of our driveway and said come get it. If they can't stand behind their trucks performance I couldn't stand behind my agreement to make psyments.. I will never again buy Chevy anything after the lack of caring by the customer service dept. THE WORST EVER HANDS DOWN. 3 YEAR OLDS WOULD DO BETTER. Wait, that's an insult to 3 year Olds to be compared to those awful ...humans. Chevy is wrong in every way possible and should be called out for selling garbage

Joe Earl (not verified)    July 27, 2025 - 8:12AM

Have a duramax 6.6? Talk to Dave at Dave's auto repair Centerville Utah. They can tell you what to expect from Duramax engines.

Tom (not verified)    July 27, 2025 - 2:40PM

I bought a 2007 Chevy p/I with 25,000 mi. I had it for 12 years. 4.3 v6. Had a minor tranny problem at about 150,000 mi. At around 200k the computer went bad. Body was still solid, little rust and I lived in the winters of NY snow, ice, and rock salt. Got a used 2008, had it for 7 years, 4.8 v6. Never had a problem. Got a new 2017 Silverado. I have about 85,000 on it and the only problem was an a-arm bushing. My son and friends with Rams and F150's have had multiple problems.

John A Nordick (not verified)    July 28, 2025 - 12:03AM

Got a 2010 HD 2500 silvrado 250000miles. Never a link of problems
Now have also a 2024 GMC Sierra HD 3500 no problems here either..

John A Nordick (not verified)    July 28, 2025 - 12:05AM

Got a 2010 HD 2500 silvrado 250000miles. Never a link of problems
Now have also a 2024 GMC Sierra HD 3500 no problems here either..

Michael Martin (not verified)    July 28, 2025 - 12:21PM

Adding aftermarket parts to your vehicle can and will affect the warranty. Truck owners who do the high lifts,wheel spacers and tunes are foolish and will cost you significantly in the near future. OEM's design and build these trucks and any modifications will not only void the warranty it can be extremely unsafe. You will have expensive suspension breakdowns because the trucks were not designed to handle the extreme lifts and tuning. These types have more money than common sense.

Brian A (not verified)    July 28, 2025 - 1:51PM

HAD a 2003 Dmax until the engine ate a glow plug at 104k
$12k for a used replacement/no warranty or $25k for acetate motor.Yah, NO THANKS GM!!
Sold it as is for a big loss.
Found a 2019 GMC Sierra1500 with low miles now.Minor issue that GM Customer service pleasantly helped out with.HOPEFULLY NO lifter or t rans explosions......yet!!!😐😁👍🏻

Jay (not verified)    August 3, 2025 - 1:36AM

I own a 2015 GMC Sierra Denali 2500 4x4 Crewcab that is equipped with a 6.6 Duramax Diesel Engine and I have had no problems with the engine or the Truck since I bought it good Friday 3024. I pull a 34 foot travel trailer with the truck and I don't even know that the trailer is there. The truck is completely stock with no modifications to it. The Truck handles like a dream and pulls it's own weight. I have had many offers to buy the Truck from me, but I have refused to sell the Truck. It only has 86,000 miles on it and it runs like a champ. I have been told to keep the Truck by many people that have seen it. Great Truck GMC.

Jay (not verified)    August 3, 2025 - 1:37AM

I own a 2015 GMC Sierra Denali 2500 4x4 Crewcab that is equipped with a 6.6 Duramax Diesel Engine and I have had no problems with the engine or the Truck since I bought it good Friday 3024. I pull a 34 foot travel trailer with the truck and I don't even know that the trailer is there. The truck is completely stock with no modifications to it. The Truck handles like a dream and pulls it's own weight. I have had many offers to buy the Truck from me, but I have refused to sell the Truck. It only has 86,000 miles on it and it runs like a champ. I have been told to keep the Truck by many people that have seen it. Great Truck GMC.