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Sometimes it's not the miles or the model that defines a truck ownership story as it’s the moment everything unexpectedly changes. That’s exactly what happened to Greg Lewis, whose recent Facebook post in the “2024+ Duramax Trucks” group caught my attention today. Greg shared that his 2024 Silverado 2500 HD had been mostly trouble-free until he brought it in for a transmission and transfer case service at 55,000 miles. After the dealership replaced a leaking seal and a faulty trailer brake controller, the truck immediately began downshifting harshly, making loud banging noises, and even locked up the rear tires. When he brought it back, the dealer told him the transmission might act strange after service, but the issues only got worse. Now he’s been told the valve body failed, the part is on backorder, and he’s stuck in a loaner with no fix in sight.
Here’s Greg’s full story in his own words:
"Has there been a lot of transmission issues with the 2024 2500 HDs? I know the earlier 10 speeds have valve body issues and what not. Has GM updated the internals at all to combat the issues? My truck is in the shop right now with trans issues and I'm not happy about it. I ordered and picked up the truck in Feb of 2024 and since then put 55k mostly trouble-free miles on it. At 50k I took it in for trans/transfer case service and they found the seal was leaking on the trans. They had to replace the trailer brake controller due to it acting up.
So they ordered parts and a few weeks later I dropped it off for them to fix said leak, it was done in two days and I picked it up. Upon leaving the dealership (Wheelers Chevrolet in Coloma, WI) I slowed down to the 1st stop sign and every time it downshifted it sounded horrible, like metal banging and jerky. Thought maybe it was a fluke so I went to the next stop sign and it got worse and the last time it downshifted it actually locked up the back tires on the pavement. Me being pissed, I turned around and went back to the dealership and said you guys messed something up. I explained what happened and the guy at the desk said sometimes they act weird after a service like that. We crawled underneath the truck and after they worked on it and they never cleaned the trans of anything so there was trans fluid all over but didn't see it leaking. Was told to drive it a day or two and if it doesn't go away bring it back in. I was going to explode from being pissed so I left, drove it the rest of the day and the next morning it locked up the back tires again so I made a beeline to the dealership and told them to give me a loaner now and fix this.
Few days went by and he said it was the valve body that went out and it's on backorder. Is it just a coincidence it went out then or did they mess something up? I’m 3 weeks without my truck now and I'm pissed. I'm driving around a used 1/2 ton Duramax loaner right now and need my truck back. I loved the truck and spec’d it out to fit me for my needs and it was my dream truck and 1st brand new truck. I'm really concerned about the longevity and how long it'll last after driving it the way it was and if I'll have more issues in the future. I'm starting to regret buying it and part of me thinks I should've gone with an F250. I started a case with GM because they told me they have no idea when a valve body will be in and when it'll be fixed. I want to get on with my life and need a truck."
Owners Speak Out
Greg's experience isn't an isolated case. A growing number of Silverado HD owners have shared similar frustrations. One owner said their 2024 Chevy 2500 HD started showing problems just a week after purchase, which raises serious questions about early quality control.
Kevin Weaver, another 2024 Duramax owner, commented, "My 2024 Duramax is in the shop now, 36,000 miles and the valve body went out. Been waiting for three weeks. No estimated time when they will ship the part and they gave me a stupid electric blazer in place of a 2500 truck. Thinking I should’ve went Ford. I understand things break, but it’s pathetic that they don’t have parts available to fix it."
Then there’s Jordan Goodrich, who added critical insight into what’s (not) being done about it on GM’s end. He said, "My understanding is the valve body and trans only received software updates and no changes to the trans or valve body themselves since the 10-speed came out. Now they are continuing to update software that limits the transmission if it gets to the point of locking up. All I know is that if it happens to mine, I'm voiding warranties and going with an aftermarket valve body solution and weight reduction if GM doesn't find a legitimate solution. If there is no legitimate solution from GM, the powertrain warranty doesn't matter."
This is especially troubling for buyers debating whether to upgrade from a 1500 to a 2500 HD for towing purposes. Greg’s story might just be the kind of experience that makes people second-guess such a move.
Jrg George chimed in with a different kind of frustration. “I have a ‘24 Denali and I just got a letter in the mail and in my app that they are going to be replacing my transmission. They are also going to be re-flashing my radio again, doing the tailgate recall, steering gear box and replacing the interior seal on my sunroof. Good times.”
The situation paints a different reality from GM's messaging. Despite their push to position the Silverado lineup as a brilliant combination of EV capability and diesel performance, stories like these reveal a clear gap between marketing and ownership.
It’s also a jarring contrast to GM’s promise that the 2024 Silverado HD brings more power, more tech, and easier towing, especially for those now stuck waiting for parts or driving vehicles with faulty transmissions.
When Confidence Collides With Reality
These stories really stick with me not just because of the mechanical issues, but because of what they reveal about trust and expectations. When someone buys their first brand-new truck, especially one they've custom-ordered to suit their needs, there's an emotional connection that runs deeper than just owning a piece of machinery. It's about pride, reliability, and believing the product will deliver not only on the road but in peace of mind.
When that trust is broken and not by chance, but by what feels like poor workmanship or delayed accountability, it creates a lasting impact. Owners don’t just walk away upset about repairs; they walk away questioning their brand loyalty and their long-term confidence in the vehicle. These kinds of breakdowns aren’t just mechanical as they’re emotional too. In the rush for more power and tech, the auto industry can’t afford to leave customer care in the rearview mirror.
It’s not just gas trucks that surprise owners with unusual issues - EVs aren't immune either. In fact, one Tesla Model 3 owner recently shared how his 2020 Model 3, with 100,000 miles on the odometer, suddenly needed a suspension repair and showed an unexpected drop in battery health. What’s striking is that while Teslas are often praised for minimal maintenance, real-world long-term ownership still brings its own quirks and wear. His experience might change how you view EV reliability over the long haul. In that story see how he managed a control arm replacement and measured his battery’s true state of health.
Key Takeaways:
- Routine service shouldn't leave your vehicle worse: If your truck drives worse after a dealership visit, push for answers and don’t accept "it just happens."
- Backordered parts are becoming a serious ownership burden: A valve body failure shouldn't strand an HD truck owner for weeks.
- Dealership transparency matters: Miscommunication after a failed repair can destroy trust between owners and service centers.
- The 10-speed transmission still raises questions: With many owners reporting similar issues, it's time for GM to address long-term durability concerns.
- Don't ignore early warning signs: Harsh downshifts, banging noises, or locked tires should never be brushed off as "normal."
What About You?
Have you experienced issues or parts delays with your Silverado or another GM truck?
And would a situation like this push you to consider switching brands, or do you believe every truck maker has its share of problems?
Let me know about your experiences in the comments below.
Aram Krajekian is a young automotive journalist bringing a fresh perspective to his coverage of the evolving automotive landscape. Follow Aram on X and LinkedIn for daily news coverage about cars.
Image Sources: Chevrolet Gallery
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Comments
Valve Bodies can take 3…
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Valve Bodies can take 3 Months to get, see it all the time
Yeah, parts delays like that…
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In reply to Valve Bodies can take 3… by Henry Seymour (not verified)
Yeah, parts delays like that have become way too common lately. Especially for critical components like valve bodies.
Thanks for chiming in Henry, it's helpful for others to know what they might be facing.
Don't ever remember having…
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Don't ever remember having to replace standard transmission! Not everyone is Cul de Sac priss and they should offer them to people who need their trucks to make a living !
Yeah. Ford would have been a…
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Yeah. Ford would have been a better choice.
I have been hearing about…
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I have been hearing about the 8 and 10 speed transmission troubles but wait till you hear my story. I bought a brand new Chevy Silverado 1500 in January of 2017 and like everyone else very proud of my new truck. Well just 3,500 miles in and never pulled anything with it at that point my transmission went out so i left in front of the service door on a Sunday yep on Monday they confirmed the transmission was bad valve body issues so they put a new transmission in got it back truck ran trouble free till i hit 35,000 miles transmission was acting up again shifting jerky not acting right so i took it back they said they could not get it to do it so i had to take them for a drive with a tech with his lap top hook up and when i slowed down and turned a corner it would jerk and he said o that's your transmission i said are you kidding me he said nope so they put the second transmission in they went to tst drive it and before they got out of the shop door it made a bug bang and they said the torque converter went out so they put a new one of those in mind now this is the second transmission and a torque converter in 35,000 miles so i got it back then at 65,000 miles the starter went out then at 70,000 miles the Ac quit working and at 98,000 miles the second torque convert and third transmission went out and once again this truck has done very little pulling my 2 four wheelers a couple times a year so they have put the third transmission in and second torque converter in 98,000 and then i got it back and 2000 miles later it was leaking transmission fluid so back it went again and they fixed that and called me and said the radiator was leaking so 750.00 dollars later i got a new radiator so yes it has been a real roller coaster with my 2017 chey Silverado all this in 100,000 miles . And i also have been a chey owner my whole life my dad had chevy I'm 60 now and have owned a lot of trucks my last one i sold before buying this one i also bought new at the same dealership sold with 336,000 miles on it and i put one used transmission in at 200,000 miles and that truck did a lot of pulling i also own a 2007 that is my work truck i have 234,000 on it right now have not touched the transmission one would think that GM would wise up and go back to the old way cause you know what it worked I'm thinking about a new bigger truck to pull a fifth wheel but with everything I hear about the 2500 I'm leaning towards a Ford also very sad for GM that they cant fix these issues.
Wow, that’s an intense…
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In reply to I have been hearing about… by Scott Vinz (not verified)
Wow, that’s an intense journey Scott.
It really highlights just how frustrating repeat issues can be, especially for someone who’s been loyal to the brand for decades.
Your story was so detailed, and I’ll actually be turning it into an upcoming article. Thanks so much for taking the time to share all the details. It really helps others understand what to watch out for.
Speaking not only as someone…
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Speaking not only as someone who had the same problem but speaking as a former quality supervisor at the General Motors heavy duty truck plant I can tell you it probably wasn't your dealer. General Motors went to a lightweight torque converter and lightweight internal parts and a claim to try to save gas mileage when in fact they were just trying to save money. Those parts cannot handle the torque of the transmission and they go bad very quickly. They know about this it's been a complaint but they choose not to acknowledge it. Not only did they not acknowledge it but they did not change the parts so the new parts that you buy that are OEM from the factory are the same bad parts. My transmission guy actually refused to use OEM parts from General Motors because of this issue it would not warranty the transmission if I bought them. He would only warranty the transmission if he bought the parts that you want to buy that were aftermarket. The best 6,500 I ever spent because this transmission is like a tank I beat The Living Daylights out of it every day for my business and never have an issue been going on two years now
Not only am I speaking from…
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Not only am I speaking from having the exact same issue but I was also the supervisor and quality at the heavy duty truck plant in Flint michigan. What I know to be true is General Motors went to a lightweight torque converter and lightweight internal parts with the intent of saving gas money but what they're really doing is saving money on parts. The OEM Parts the parts directly from the factory they know this but they will not acknowledge it they will not change your parts they will not warranty the truck. My transmission got refused to use omgf certified Parts because they're the same bad part they would not want to the transmission if I chose to use those parts. Salty bought the parts aftermarket and put them in and it's been 2 years in the transmission is still like brand new no issues. Even though I hate to spend $6,500 on it then covered under warranty by General Motors it
Thank you for sharing both…
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In reply to Not only am I speaking from… by James (not verified)
Thank you for sharing both your personal and professional insight James.
It adds a valuable perspective that many truck owners don’t often get to hear. It’s concerning to think that known weaknesses in OEM parts are still going unresolved, and your experience really highlights why so many are turning to aftermarket solutions.
I’ll be referencing your comments in an upcoming article to help others better understand what might be going on beneath the surface.
Been waiting a month for the…
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Been waiting a month for the valve for the transmission on a 2022 Tahoe with the baby diesel I ordered it brand new from the factory. It's been in the shop more than any other vehicle I have owned. I tried to lemon law it and got denied on mileage. They did extend the drivetrain warranty to 90,000 miles and gave me like $500 in dollars for service. However they have already replaced the transmission, def system, they finally got the Bluetooth fixed which hasn't been working for 6 months. Then they told me a software update had fixed the transmission. Made it 5 miles before it went into limp mode and now I am waiting on the backordered part just like everyone else with a 10 speed transmission. I am taking it to my auto broker sending it to auction and getting a Ford as soon as it's fixed.
That sounds incredibly…
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In reply to Been waiting a month for the… by David (not verified)
That sounds incredibly frustrating David.
Especially after ordering the vehicle brand new and dealing with so many major issues so early on. It’s tough when even warranty extensions and software updates don’t solve the core problems. Thanks for sharing your experience.
I know someone who works on…
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I know someone who works on a GM line. They say the union is powerful enough to let really bad workers get away with unimaginable things like destroying multiple wiring harnesses a week (one person), vehicles moving down the line that aren’t passing leak checks bc they have cracked parts & other crazy stuff. It’s a not my problem atmosphere. Just keep it moving down the line.
That’s a concerning insight…
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In reply to I know someone who works on… by Concerned person (not verified)
That’s a concerning insight. And if true, it really speaks to how deeper systemic issues can affect the final product quality. It’s sad when that kind of culture exists anywhere in the industry. I appreciate you sharing this, it’s a perspective worth acknowledging in the broader conversation.
If you have more details and would like your story out there, reach out to me on X in my bio and we can turn this story into an article!
This isn’t isolated to GM…
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This isn’t isolated to GM. While my F150 got a new valve body at 88,000 with no wait, my wife’s Ford escape needed a transmission. Took 6 weeks to get one. Another two to install it. No loaner no rental.
Fast forward, notified by the dealer that the replacement transmission received was bad, no eta on new transmission. Can’t even move it out if their shop. Saga has been going on since February. No accommodation from the dealer.
My 3500 High Country…
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My 3500 High Country suffered a valve control body failure on I75 in Atlanta pulling a 41 ft fifthwheel back home to Ohio.
Managed to get to a truck stop and had my truck towed to a dealership and my fifthwheel was placed in storage; that
was a month ago.
Working with GM Corporate where there is no ETA on the part. Here I sit with no truck and no means to get my RV back to Ohio. I have another camping trip coming up and I'm afraid my family won't be able to go.
It's a mess and my loyalty to GM is being tested.
2023 Chevy Silverado1500LT…
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2023 Chevy Silverado1500LT 4x4 Bought new in July 2023. part of a fleet of about 60 trucks bought as fleet vehicles by my company. 52K on the odometer, had a vibration in the drive train since taking possession of the truck. Spoke to another driver and they said the same thing was happening to them. They had the trans. fluid changed and filter done and it cured the problem. I wasn’t so lucky, coming home from work( 70 miles round trip) the truck shuttered, dash flickered and got a message “acceleration Reduced Please Drive Carefully “. This in Philly traffic going over a bridge, FUN TIMES. Got it to the dealer the following morning to be told it would be the end of the month before they get a chance to look at it. REALLY? They did look at it and it’s the valve body. This transmission issue is Ford and GMs COVID. Rumor has it the transmission was pushed out knowing it wasn’t ready, but they had so much money tied up in it they had to start selling the trucks or take a loss.
This is one of the issues with these trucks. From battery drain after updates to weld coming apart in the roof, what the heck is happening. So much for “ LIKE A ROCK”
I also wrestled with GM over…
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I also wrestled with GM over the 2008 5.3 AFM feature that was defective that they never warranted. So after so many back and forth I took that Tahoe and my Saturn Sky to a Ford dealer and requested a truck that worked. I got F150STX with Coyote motor. We bailed GM out only to have them screw us, screw GM. 2006 4.6l Ford Mustang still running but 08 & 07 GM products both failed, clear enough for me that GM is only looking out for GM.