Same thing with my 2023 3500 GMC AT4. I was on my way to Yellowstone from California and upon climbing HWY 80 by Donner Pass towing my 41ft 5th wheel, it did the exact same thing you explained in your video. The only difference was that when I bought a code reader at oreilys,(the good one) about 180$, it did not clear the codes. I had to physically disconnect the batteries to reset the codes. Then I could use it normally unless I was climbing up a hill. I figured out that if you let off the throttle right away when you feel it about to hesitate or shift hard from 6th to 7th it lets the RPM's go down and it shifts smoothly or put it in neutral , let the rpms go down and put back in gear. I did that alot. LMAO... I continued my vacation and didnt let our Yellowstone trip get ruined because of a bad Valve body. LOL The best thing to do is let the tranny rest or cool down to have better effectiveness of it delaying the code or symptom again. But its still under warranty as i have only 28k miles.
Sucks man I’m sorry. Next time use the gear limiter to keep it from shifting out of 6 and just deal with it until GM gets parts. Then go by a ford or ram
If you shift to neutral before it goes to limp mode and shift back to drive it will shift into the next gear. My truck does it 6-7 gear. I just shift to neutral and then back to drive and it will shift into next gears without issues. Hope this helps everyone with this junky valve body
I’ve owned 3 in a row, over 700k miles total, towing some heavy trailers including a 42’ toy hauler. Never an issue. The only problems I’ve had were with the F’ed up DEF system
I'm having the same problem with my 2023 GMC2500 HD smh!! thanks for the great video my guy! now im gonna sound like i know what im talking about when i go to the dealer in the morning !
Thanks for posting this. Mine did it with 26K miles. 1-1/2 Months on backorder, just got the call that the parts are coming in but now wondering if it will just do it again. Wish I had my 17 Ram Cummins back.
Same problem, 2023 Sierra 3500, 20k miles. Left family and cargo trailer stranded 500 miles from home the first time. Warranty covered the tow of the truck, but they said the trailer was my problem as was getting back to the dealer to pick up the truck. First dealer cleared code and said nothing wrong with it. Did it again 2 weeks later and it has been at the local dealer ever since, which will be 40 days ago tomorrow. Dealer said it would be "several weeks" and they had over 30 valve bodies already on back order!!
I have 2023 GMC 3500HD with 10 speed Allison, currently have the same issue, very frustrating! its been in the shop about 3 weeks now, and they are saying that they don't have parts..now this morning there's recall that saying there's recall about tailgate..
You don’t have a 10 speed Allison buddy… you have a Chevy transmission!!! Chevy bought the right to the logo so they can continue putting the Allison badge on the hood. If they do not do that, then Ford would be able to put the Allison logo on their hood as well because the 10 speed in the Chevy and GMC are the same transmission that’s put in the Ford super duties. GMC or General Motors and Ford built that transmission together in house. it was stamped of approval with Allison because it met all the requirements that they test their transmissions with. So to finally put this to rest, any heavy duty with a 10 speed out of a GMC or Chevy is not an Allison! Unfortunately, when you tell a diehard GM guy this they get really pissed off because they do not want to hear what the truth is. GM buying that logo and spending $40 million on that logo meant a lot to that brand.. five years they will pay another 40+ million to keep that logo again. Anyways, try going to Ford and asking their mechanic shop if they can order the part because it is the same transmission lol .
I have a 2023 Silverado 2500 custom 23k miles. Same issue. It’s been at the dealer ship for a month now and now parts yet. My brother has the 22 2500 and his truck is beside mine at the dealer ship waiting for a valve body. The dealer said they’re 2 more in front of ours waiting on valve body’s. This is my first Chevrolet. I switched from rams because of transmission issues and now I’m at the same point with Chevrolet.
I just experienced the same exact issue that you described here. I have a 2020 GMC Duramax daily, bone stock, which i bought new. I had the transmission fluid and filter changed less than 5 days ago and im now sharing in your frustration! Zero issues before now. Im starting to second guess my decision on preventative maintenance.
Same thing happened to me. Had the Allison serviced in a routine maintenance and now it’s locking up and downshifting to 1st from 9th at 80 mph. It’s a death trap
I've been without my 2021 2500 for almost three months now. Started with a slight slip/hesitation between 2nd and 3rd. Then escalated to redline RPM's and no movement from a dead stop. Brought it to the dealer and they replaced a valve body in about 1 week. Pulled out of the dealer and within 10 miles I had to pull over on the highway because the truck lost forward movement at about 65 MPH. They took it back, "tore down" the transmission and said they had to order a part and a wiring harness, which took 2 months to come in. Got the truck back last week, drove about 8 miles, same thing. Back to the dealer. I opened a case with General Motors but they've been no help at all. Got a call two days ago that the truck was ready but the mechanic was going to take it home and drive it all weekend, which I thought was great idea. The dealership called me yesterday and said the mechanic experienced "a different issue" but thinks they were able to pinpoint the problem based on this new issue. From what I've been hearing and reading online, this new 10 speed is problematic. Your video is 8 months old, hopefully they were able to resolve your issue. If they were, and you know what the problem was, can you share it please?
So I solved the issue by replacing the trans with an Aisin….. I filed a claim against GM too and got some money out of it at least. Keep all shop records. Best of luck
I had the same issue 2024 2500HD only 17k miles and the check engine light came on codes came back as solenoid stuck open I’m like dang brand new truck and having issues already
I’ve been experiencing this same issue in my 2022 3500at4 Duramax since about 12,000 miles. My truck will not throw a check engine light but had complete power loss and truck acted like it died when it downshifted when pulling a hill while towing. Transmission has minor slipping weekly since 12,000 miles. I’m currently suing GM in a Lemon Lawsuit because the dealership refuses to fix and GM denies fault. My truck currently has 37,000 miles on it and has had persistent transmission issues for over a year and a half. Frustrating to say the least.
I’m experiencing exactly the same 2023 GMC Sierra 2500 diesel 78,000 miles bought scanner OREILYS and clearing out code also neutral while rolling let rpm down put in drive and it relaxes the shift and performs normally
Same thing! 2020, 3500. No mods and it’s downshifting from a high gear to either park or 1st gear while going faster than 60 mph. It locked up and did this too me at 80 mph pulling a trailer. Here’s the thing, no codes and the dealer is refusing to fix it. It’s my business truck and my daily. I depend on this truck for my livelihood and I’ll never buy another one. I know all makes and models have their issues but I really believe I’m going to die in this truck and or other people with me.
I have a 2020 Duramax with the Ten Speed transmission. Had a limp mode issue all of a sudden while not pulling anything. Dealership replaced the TCM and fixed the issue. That was 80,000 miles. Now at 118,00 miles, today while pulling a 42 foot fifth wheel from Bangor ME headed for o KY, it did it again in NY state. I limped the camper into a campground and have a dealership set to look at it at 8am in the morning. Sure hoping they can get it going so I can get home. First time I have ever been dead in the water with a GM truck since 1995. I travel country wide and never had an issue with my 2017 Allison 1000.
That 2017 product was much different. The new 10 speeds are no longer built by Allison. It’s just a and now. Best of luck, and I hope you get back on the road soon! Thanks for watching.
@@aslife3813 It did not turn out good for me today with the 2020. The pan was full of metal shavings and the valve body was destroyed because of it. They told me three weeks and more than likely a new transmission. So….I traded it away. Drove off with a 2024 GMC 2500HD Denali. They told me that in 2022 they got the ten speeds under control finally. I hope they are right because like you, my truck is my livelihood.
Having same trouble with new body Escalade under warranty but cannot be fixed and no repair date available and Cadillac doesn’t care and will not call back and vehicle is sitting at dealership or 3 rd time in 3 weeks no rental offered just was told gm doesn’t give a shlt about you or your vehicle 100k and we walking! Thanks gm loving this Cadillac experience
It’s a tough thing to stomach especially with what we pay for these trucks and luxury vehicles. The whole system is set up against us that’s for sure sorry to hear that
I have a 2023 GMC 3500 with 35,000 miles and I am having the same issue. Brought it to the dealer and they told me 4-6 weeks for repair. Very frustrating
Hey my dude, I want to thank you and everyone else who records when they're having issues with the 10L1000. I hope it KICKS GM IN THE ASS! That being said, I am the only Trans tech in my chevy dealer. I have 1 truck right now waiting for a valve body on backorder since July 26th. They authorized a transmission replacement today. Which means valve bodies for Allison are so far on backorder that GM is willing to replace the transmission for customer satisfaction. If that doesn't tell you something. I feel for you fellows that paid 70 or 80 or even 100 grand for a truck that you can't use. It's robbery frankly. On a side note. I've been seeing a pattern that the 10L1000, as a whole, only last about 100k miles. So take that for what it's worth.
I have the 2023 DuraMax 3500 6.6 Hd and it’s doing the exact same thing you said yours is doing in this video. Check engine light comes on and then the transmission makes a noise and then it pops up on my screen “ speed has bee reduced “ and i can only do about 45mph
Yup. Make sure to keep all paperwork form dealership from warranty work. If it’s in the shop longer than a month you can usually file for compensation thru and attorney for lost value but it has to be documented. The more service it needs the more money you get
Question for ya. When you used your exhaust brake did it seem to mess up more? Mine seems to. It won’t even let me turn the Exhaust brake on sometimes and this is when it seems to be running fine and no check engine light is on. Definitely won’t let me turn it on when the check engine light is on. I deliver buildings everyday all day 3 or 4 a day and I need a properly work transmission.
I have the same truck , having the same issue , sticking in 3-4 only get to 45 mph, been waiting a month and half, according to gm the valve body was milled to small for the shift solonoids,under warranty 50,000 miles. You can shut off the truck open the door and restart and it will reset for a little bit. Good luck it will work a few times until it doesn’t . I’m out off commission until I get to my appt, 2 more weeks
Have a buddy with the new ram. He likes it; he got stuck in his driveway within the first month.. some issue with the transmission. Lolz It got sorted quickly though. Been lucky so far with my Silverado, but I only have 23,000 miles on it.
5:36 PST yep same year here, same problem. I was told there is not even a valve body available. No idea when they will get the part. Ridiculous. Mine is also my work truck. No rack, no tools, how do I work. I am pure Chevy, got a bowtie tattoo. Seriously displeased. I am in Oregon. Sounds like it is happening everywhere. Bummer. My 2016 never has had a problem and I beat on it more than the new one. Ugh! At the almost 2 month mark they finally put a new transmission in it.
Just had my 23 gmc 3500 srw towed to local dealership. 6.6 with the 10 spd. I’ve owned the truck for 2 weeks bought it used from gmc. When downshifting it will clunk horribly metal on metal and send it into limp mode. Reset the code and it runs fine for a week. P0700 code with no other code on the reader I have. I do 70k a year I’m about to buy a low mileage 7.3 again and wait until these spacetrucks get the technology caught up with the sales pitch. Dale problem I rely on it for my business and the only local gmc trans tech has been on the same vehicle for 3 months. Welcome to 2023
2022 Hd 21000 miles! Happened to me day before yesterday! Driving down road at 55 then it down shifted to 2 or 3rd and went into limp home at 35 mph! Now I’m waiting on a valve body! No time given! Wasn’t even towing Anything!
My 2024 Duramax had trans fluid dripping in the first week. Havent seen anything since. At 6k miles now. I remember my father buying a new 2001 dodge with a 5 speed manual. Id rather have a manual. BUT. He then broke the transmission 3 times in first 60k miles. Last time in middle of Georgia. Lucky he had money to fix and time. He spent a week at a little shop. They installed a allison. And the truck went to 250k no problem. That was a REAL allison
@@jessebenitez541 mine is leaking again. Who knows how long they'll need it but it's about to go back in the dealer. I figure every day it's not functioning for me to make money is costing me at least $200 a a day so if they have it for 2 months it's going to cost me a lot I think I'll send them a bill
So far, so good with truck. Tail gate was going down on itself when it was below freezing. For a recall notice about that, with no solution yet.. no big deal. Other than that, truck has been great so far... I’m sure something will fuck up though.. hope not. These trucks cost quite a bit. Got this to replace my 6.4l 2008 f350 with highish mileage.
Dude holy crap. I was looking at trading in my 09 duramax for a newer duramax but after looking at and reading all of these comments its definitely starting to make me think i should just keep my 09. Hate to see the newer trucks having this many issues. My truck has been super reliable.
I have a 2022 GMC 1500 Denali 3.0 Diesel and my Transmission Body Valve went out. They had my truck for 3 weeks called me to tell me that a new Body Valve came in and I could pick up my truck the next day. They called me the next day to tell me that the part was defective and they had to order another. It’s been 5 weeks now with no word of when my truck will be fixed. The only good news is they gave me a brand new Elevation to drive which I have put about 1,400 miles on. However, it’s not my Denali!
My ‘23 3500HD with only 15k miles just did this same thing this afternoon. We were getting ready to go camping for a long weekend. I pulled P0700 and P0747 codes. Looks to be the same issue as everyone else. Super frustrating for a 92k price tag.
I’ve got the same exact codes on my 2500hd at 48k miles. While driving out of town for work. It’s bs for the price we had to pay for a “reliable truck” as I thought it was.
Have a 2024 2500HD that is gas, but my A/C compressor went out at 55k miles and picked it up after the repair and the same day my transmission valve body went out. I’m probably going to trade it in on something else. All repairs were covered under warranty but I’ve gone 6 weeks without my vehicle that I use for work as well. Never towed anything with the truck but put about 50k miles a year on it. Very disappointing. Neither part should have e failed and both had over a two week back order wait time on the parts from GM.
I’m in the same boat as everyone else. Truck has been in the shop waiting on parts for a month and a half. Has anyone out there gotten any compensation from GM for not having a truck for months??
I’m in my second company truck now because like clockwork these transmissions keep going out exactly how you described. Today(third truck) right now as I am typing this my truck is in limp mode as well. First two trucks are still in the shop to this day 3 months later.
My 2021 that I've had for 6 months now has 140k miles and is having a similar issue. I've lost reverse and only have 1st gear in drive. Dealer says valve body. Has anyone considered or know if one could swap these 10 speed junkers out for the old 6 speed like the previous l5p had?
Same thing is happening with my 24 2500 gasser, been at dealership for 3 weeks. They’ve been throwing parts at it but seems like they’re still having issues.
@@aslife3813 In my experience, I was stuck in 2nd gear. The tranny tech installed a new valve body, that one failed during the test drive, ordered another one, now the tranny control module is throwing a code, GM has to custom make these for each truck is what I was told and there’s a back log, tech installs new TCM, now they’re having issues with programming, and TCM is still throwing a code.
@@aslife3813my 24 gasser has a very hard shift only from 7th to 8th gear when accelerating. You don’t have to be accelerating hard ether. Maybe running 2400 rpms. I wish I had kept my Ram 2500. Very disappointed in this truck.
2023 3500. 60k miles and it’s having a similar issue with second and third gear. Just had the valve body replaced and still having a hard shift. Bummer
How long did you wait for the part? Ive been waiting 4 months for my valve body for my 2023 and they still have no ETA. About to trade it for a Powerstroke. Third Duramax since 2015 and it might be my last.
Currently waiting on my 2023 Duramax 3500 with a valve body issue. Been 3 weeks. The part is in such demand due to failure GM cant make enough. Bought the truck new for almost 90k. Only 18k miles on it. GM is still manufacturing trucks that will have the same issue. Im about ready to sell it and get a Cummins.
Any updates on what was the solution in your side? I’m having the exact same problem.. I’m on 52,000 miles and I do have warranty service, I’m still waiting on the dealer for parts.
My first experience with an HD truck but my 2023 2500 GMC w/30k miles has been at the dealership for a month tomorrow, and I’m being told the valve body is on “indefinite backorder”. I was also told that they currently have 5 trucks waiting on the same part. Seriously, how does a product fail at this high of a rate?
@@akaixl83 They ended up having it for 7 weeks. We got it back about a month before we headed out on a 5400 mile trip out west. They replaced the valve body and we had zero issues towing 8,000 lbs from Indiana to Glacier NP in Montana and back. Not a single issue and is still running great.
The issue on the GM 8 speeds was due to the wrong fluid. The original fluid grabbed too much moisture from the air. Mobil1 came up with a fix and they even slightly revised that one more time. With the proper fluid via a triple flush from the dealer, the 8 speeds eventually worked very well. I wonder if these 10 speeds need a better/different fluid? Have a Ford Super Duty Powerstroke on order and was looking to order a 24 Sierra 2500 HD AT4X diesel, I'm disappointed to see so many of these HD 10 speeds having issues that GM can't readily fix.
Both trucks you mentioned use the same transmission. GM licensed the 10 speed from Ford in exchange for Ford licensing the GM FWD 9 speed. The 10 speed uses a unique Ford-developed fluid, Mercon ULV.
Didn't experience that with the Mobil1 fluid and 8 speed. It also had short service life.... they said the trans would get too hot, but I never towed and I don't think I ever saw the temp over 190.....
Sorry to hear about your truck. I have a 2022 GMC Sierra refresh 1500 duramax. My transmission is also experiencing a stuck valve and the dealer only has 1 transmission tech. So I’m waiting to take it in later this month. With that said, even if they fix the problem, have you heard that it will happen again? I really enjoy the truck, I went from a 2005 GMC Sierra with the 6.0 gas engine to this diesel. It’s my first time owning a diesel and I mainly chose the diesel because of the great gas mileage. I’m just hoping that this is not an ongoing issue. I Aside from wanting a new truck, my main reason was to avoid any major engine or mechanical issues. I just hope this isn’t a defect on the part of GM? Thanks again for the video.
If you look at the other comments, looks to be close to 76-80% of them are experiencing the same issue with the transmission. In all platforms too, 1/2, 3/4, 1 tons and big suv. I hope they get you fixed soon!
Wow... Just had this same issue on my 2020 2500HD LTZ(94k miles) about 3 weeks ago. Been sitting at the dealership for 3 weeks, no loaners vehicle, and they're trying to give me shit about my Edge Cts3 monitor saying they need to check the calibrations because I have a "tuner" on my truck. Its BONE STOCK, never been touched! I see from this video and the comments that im about to endure some bulls*** from the dealership. To add insult to injury, they're telling me a valve body is about 3 months out and a new transmission is about 6 months out. UNACCEPTABLE!!!!!!!!
@aslife3813 new truck prices are asinine! I know the calibrations haven't been tampered with, GM isn't getting off that easy! Going to be a thorn in their ass til I feel justice has been served!!
So sorry man! I hate when something like this disrupts life. I have a 2022 Trail Boss Duramax half ton with the 10 speed transmission. It has been at the dealership for a month waiting on a valve body. I hope they figure it out. No ETA on when the part will be in from GM.
if you are referring to lemon law lawsuit then yes. I reached out to GM while my truck was in the shop also a 3.0 2022 d max. Was there for 6 weeks trying to fix a def issue. I could go through lemon law but no guarantee i'll get anything from them. GM wouldn't do a buy back or anything. I was out loss of use, loss of business for my customers, actively turning away work, and they offer me GM rewards points lol. I figured in total was out around $5000 in that 6 week period. still trying to decide what i should do.@@aslife3813
Maybe I should get the baby cake Colorado zr2 instead of the hd zr2. This GM starting to make me wonder if I should stay loyal. My 07’ Tahoe Ppv still strong but I want a nice (new) dailey in Houston. I’m sorry, brother. GM is really messing up lately
I have a 2022 2500 Duramax ot has 145k on ot and just had to have the trans replaced at a cost of 9k. They replaced the whole trans. Only because they could not replace the valve body.
2023 2500hd same problem. Transmission on national back order. It's my service truck for my air conditioning business. Going to get truck from dealer and take to suncoast in ft walton fl to build it. 12,500.00. 3 year unlimited mile warranty. Sucks big time.
We have been broke down in Smyrna Tennessee for 3 weeks with exact same problem and waiting for the dealership to work on it and ours is a Chevrolet 2022 with only 16,000 miles and we don’t know what the do cause it pulls our 5th wheel
Same thing happened to my 2023 Chevy Silverado 2500 28,000 miles truck is now at the dealer undergoing a total transmission replacement been there for 3 weeks now
Sorry to hear that. Seems like none of the new stuff (even aisin is failing, my FIL got a brand new one and he didn’t even make it to 15k before total failure) is hood anymore
This just happened to me yesterday on my 2023 Silverado Duramax 3.0. I got a P0700 / P0747. With only 20m miles. I dropped it off at the dealer since I have warranty still. Wondering if the same supply issues are happening and if GM will even loan you a like for like car while you wait for it to be fixed. Any luck anyone ?
When you obtained your banks IDash did you get the inline tuning module? If you did get this module what tune is it on? its got 5 presets. I had a very similar issue on my 2022 Duramax L5P. When you run higher levels of power on this transmission you need to also increase the transmission line pressure to avoid "Funny" shifting and behavior. Long story short mine would sputter really bad when trying to downshift from 10th to 9th on the highway to pass but would clear up as soon as i let off the throttle. The only thing you can do to increase line pressure is getting an aftermarket TCM with proper corresponding tunes.
Sorry to hear that I hope you can find a dealership to turn it around quick but it sounds like they’re running low on valve body replacements if you see the other comments
Had same issue with my 2022 AT4 2500 Duramax. Truck was out of service for 2+months. New transmission and valve body replaced. And my truck only had 5500 miles on it! 😡
Good luck to everyone. I believe they know from day one that the problem is there, and they prefer the money and I fixed later, which is what happens; it is embarrassing and also inflicts a lot of pain and stress on the consumer doing that if you only have only one truck to doing business, you will end it in a difficult situation with your customer that they don't understand the problem and wanted the job done.
Did gm replace your tranny? I just had this happen for the 2nd time and only 5000 miles on the truck. They did the valve body the first time, hoping they will replace the whole tranny
Yes, not enough on this subject on YT. My 9 month old 28 K Silverado has been stuck in Birmingham, Alabama, for over a month and two weeks. I do spesalized construction for a living and have to tow a trailer across the country to do this construction work, so I buy a brand new truck every two years or so . It turns out i'm gonna have to go buy another truck to replace this truck. This is a very expensive endeavor. Is on my part being without a truck. No word yet on when they will get a valve body for my ten speed Alison transmission. And I need to be in San Diego by next monday. Or lose out on a fifty thousand dollar gig. So yeah. I have to buy a new truck and i'm out of town still in Alabama , I still owe forty thousand dollars on the old truck that I can't trade in . Im trying to get GM to buy it back. This kind of thing hurts.
Just thinking about that today. Really don’t want to but if I can’t rely on the trans then I might have to. With higher rates and truck prices tho I’m hoping to avoid doing thay
2023 GMC 3500 HD 40,000 miles , same issues going into 4th.. dealership says no parts in country! Plus they won’t step up and give a break on trading.. they say they will screw me basically because the truck is broken and I will definitely be upside down in payments now.. what a joke and scam.. same dealership that sold it to me a couple months ago..
GM is having real issues with transmissions, the 8 speeds are having even bigger problems. After having a problem myself, I've opted to trading them in every year or so. Remember on 8 speeds, the warranty is just 60,000 miles.
Same thing with my 2023 Chevrolet LTZ 2500 Flat ground 40-50 mph started slipping. 30,000 miles. I like the way the Chevy drives but may be time for a Ford.
Same problem. Its time for another class action lawsuit.
Same thing with my 2023 3500 GMC AT4. I was on my way to Yellowstone from California and upon climbing HWY 80 by Donner Pass towing my 41ft 5th wheel, it did the exact same thing you explained in your video. The only difference was that when I bought a code reader at oreilys,(the good one) about 180$, it did not clear the codes. I had to physically disconnect the batteries to reset the codes. Then I could use it normally unless I was climbing up a hill. I figured out that if you let off the throttle right away when you feel it about to hesitate or shift hard from 6th to 7th it lets the RPM's go down and it shifts smoothly or put it in neutral , let the rpms go down and put back in gear. I did that alot. LMAO... I continued my vacation and didnt let our Yellowstone trip get ruined because of a bad Valve body. LOL The best thing to do is let the tranny rest or cool down to have better effectiveness of it delaying the code or symptom again. But its still under warranty as i have only 28k miles.
Sucks man I’m sorry. Next time use the gear limiter to keep it from shifting out of 6 and just deal with it until GM gets parts.
Then go by a ford or ram
It’s because it’s a Chevy transmission badged as a Allison
YUP ALLISON SHOULD HAVE NEVER USED BADGE!! I have 03 with true Allison that thing is a beast
Dam following please keep us in the loop
It was actually co-developed with Ford to compete with rams ZF. Ford 10 speeds had issues to. I believe there is a fix for them
If you shift to neutral before it goes to limp mode and shift back to drive it will shift into the next gear. My truck does it 6-7 gear. I just shift to neutral and then back to drive and it will shift into next gears without issues. Hope this helps everyone with this junky valve body
I have a 2024. Same problem…
Just sold a Powerstroke with 228,000 miles and never had an issue.
Just sold my 2009 2500 4x4 with 398000 still ran great and pulled gooseneck trailers well
Lol calling BS on the Power joke!
I’ve owned 3 in a row, over 700k miles total, towing some heavy trailers including a 42’ toy hauler. Never an issue. The only problems I’ve had were with the F’ed up DEF system
I'm having the same problem with my 2023 GMC2500 HD smh!! thanks for the great video my guy! now im gonna sound like i know what im talking about when i go to the dealer in the morning !
Same thing on my 2023 2500HD. Replaced the valve body last month (31 days in the shop) and now doing it again.
I’m in the market for a 22+ gm hd diesel/ gas, hate hearing this
Thanks for posting this. Mine did it with 26K miles. 1-1/2 Months on backorder, just got the call that the parts are coming in but now wondering if it will just do it again. Wish I had my 17 Ram Cummins back.
We have 2 1500 with durmax engine and the both are having valve bodies replaced 29,000 and 12,000 miles. Seems like they have a problem
Same problem, 2023 Sierra 3500, 20k miles. Left family and cargo trailer stranded 500 miles from home the first time. Warranty covered the tow of the truck, but they said the trailer was my problem as was getting back to the dealer to pick up the truck. First dealer cleared code and said nothing wrong with it. Did it again 2 weeks later and it has been at the local dealer ever since, which will be 40 days ago tomorrow. Dealer said it would be "several weeks" and they had over 30 valve bodies already on back order!!
My question is are they going to put the original failed valve body in it again or is there a updated fix
I have 2023 GMC 3500HD with 10 speed Allison, currently have the same issue, very frustrating! its been in the shop about 3 weeks now, and they are saying that they don't have parts..now this morning there's recall that saying there's recall about tailgate..
You don’t have a 10 speed Allison buddy… you have a Chevy transmission!!! Chevy bought the right to the logo so they can continue putting the Allison badge on the hood. If they do not do that, then Ford would be able to put the Allison logo on their hood as well because the 10 speed in the Chevy and GMC are the same transmission that’s put in the Ford super duties. GMC or General Motors and Ford built that transmission together in house. it was stamped of approval with Allison because it met all the requirements that they test their transmissions with. So to finally put this to rest, any heavy duty with a 10 speed out of a GMC or Chevy is not an Allison! Unfortunately, when you tell a diehard GM guy this they get really pissed off because they do not want to hear what the truth is. GM buying that logo and spending $40 million on that logo meant a lot to that brand.. five years they will pay another 40+ million to keep that logo again.
Anyways, try going to Ford and asking their mechanic shop if they can order the part because it is the same transmission lol .
I have a 2023 Silverado 2500 custom 23k miles. Same issue. It’s been at the dealer ship for a month now and now parts yet. My brother has the 22 2500 and his truck is beside mine at the dealer ship waiting for a valve body. The dealer said they’re 2 more in front of ours waiting on valve body’s. This is my first Chevrolet. I switched from rams because of transmission issues and now I’m at the same point with Chevrolet.
I just experienced the same exact issue that you described here. I have a 2020 GMC Duramax daily, bone stock, which i bought new. I had the transmission fluid and filter changed less than 5 days ago and im now sharing in your frustration! Zero issues before now. Im starting to second guess my decision on preventative maintenance.
Oh no! It sucks for sure, I hope they fix yours faster than they did mine the first time. Weird issue
Milage?
Same thing happened to me. Had the Allison serviced in a routine maintenance and now it’s locking up and downshifting to 1st from 9th at 80 mph. It’s a death trap
@@RobbieBobbie98 that’s fucked. Rip engine
@@RobbieBobbie98or flywheel
I've been without my 2021 2500 for almost three months now. Started with a slight slip/hesitation between 2nd and 3rd. Then escalated to redline RPM's and no movement from a dead stop. Brought it to the dealer and they replaced a valve body in about 1 week. Pulled out of the dealer and within 10 miles I had to pull over on the highway because the truck lost forward movement at about 65 MPH. They took it back, "tore down" the transmission and said they had to order a part and a wiring harness, which took 2 months to come in. Got the truck back last week, drove about 8 miles, same thing. Back to the dealer. I opened a case with General Motors but they've been no help at all. Got a call two days ago that the truck was ready but the mechanic was going to take it home and drive it all weekend, which I thought was great idea. The dealership called me yesterday and said the mechanic experienced "a different issue" but thinks they were able to pinpoint the problem based on this new issue. From what I've been hearing and reading online, this new 10 speed is problematic. Your video is 8 months old, hopefully they were able to resolve your issue. If they were, and you know what the problem was, can you share it please?
So I solved the issue by replacing the trans with an Aisin….. I filed a claim against GM too and got some money out of it at least. Keep all shop records. Best of luck
@@aslife3813 The dealership replaced the Allison with an Aisin or you had to replace it at your expense?
I call BS
I had the same issue 2024 2500HD only 17k miles and the check engine light came on codes came back as solenoid stuck open I’m like dang brand new truck and having issues already
How do we go about opening a lawsuit against Chevy
I’ve been experiencing this same issue in my 2022 3500at4 Duramax since about 12,000 miles. My truck will not throw a check engine light but had complete power loss and truck acted like it died when it downshifted when pulling a hill while towing. Transmission has minor slipping weekly since 12,000 miles. I’m currently suing GM in a Lemon Lawsuit because the dealership refuses to fix and GM denies fault. My truck currently has 37,000 miles on it and has had persistent transmission issues for over a year and a half. Frustrating to say the least.
Sad to hear these stories especially with the price they charge now for them. Hope you can find a resolution wuickly
I’m experiencing exactly the same 2023 GMC Sierra 2500 diesel 78,000 miles bought scanner OREILYS and clearing out code also neutral while rolling let rpm down put in drive and it relaxes the shift and performs normally
Just bought a 2022 same engine and 10 speed. Now I’m worried.
Same thing! 2020, 3500. No mods and it’s downshifting from a high gear to either park or 1st gear while going faster than 60 mph. It locked up and did this too me at 80 mph pulling a trailer. Here’s the thing, no codes and the dealer is refusing to fix it. It’s my business truck and my daily. I depend on this truck for my livelihood and I’ll never buy another one. I know all makes and models have their issues but I really believe I’m going to die in this truck and or other people with me.
Sucks to hear man I’m sorry! Can’t believe they’re not covering it. Dangerous
So it locked the back tires up going 60 miles an hour?
I had the entire transmission replaced under warranty because of the same exact issue. Drove fine for one day then did it again!
I just got a 2024 gas and it blew the transmission at 930 miles. No date from the dealer on when it will be fixed. Lost 5th-10th and reverse
I have a 2020 Duramax with the Ten Speed transmission. Had a limp mode issue all of a sudden while not pulling anything. Dealership replaced the TCM and fixed the issue. That was 80,000 miles. Now at 118,00 miles, today while pulling a 42 foot fifth wheel from Bangor ME headed for o KY, it did it again in NY state. I limped the camper into a campground and have a dealership set to look at it at 8am in the morning. Sure hoping they can get it going so I can get home. First time I have ever been dead in the water with a GM truck since 1995. I travel country wide and never had an issue with my 2017 Allison 1000.
That 2017 product was much different. The new 10 speeds are no longer built by Allison. It’s just a and now. Best of luck, and I hope you get back on the road soon! Thanks for watching.
@@aslife3813 It did not turn out good for me today with the 2020. The pan was full of metal shavings and the valve body was destroyed because of it. They told me three weeks and more than likely a new transmission. So….I traded it away. Drove off with a 2024 GMC 2500HD Denali. They told me that in 2022 they got the ten speeds under control finally. I hope they are right because like you, my truck is my livelihood.
Looks like your issue is with the software not the transmission itself..
@@Victory2012ky Read all other reviews. people with 20-24 are having the same issue. Best of luck!
Having same trouble with new body Escalade under warranty but cannot be fixed and no repair date available and Cadillac doesn’t care and will not call back and vehicle is sitting at dealership or 3 rd time in 3 weeks no rental offered just was told gm doesn’t give a shlt about you or your vehicle 100k and we walking! Thanks gm loving this Cadillac experience
It’s a tough thing to stomach especially with what we pay for these trucks and luxury vehicles. The whole system is set up against us that’s for sure sorry to hear that
I would like to know how you drive this vehicle? Easy and that care of it or foot to the floor every where you go?
I have a 2023 GMC 3500 with 35,000 miles and I am having the same issue. Brought it to the dealer and they told me 4-6 weeks for repair.
Very frustrating
Hey my dude, I want to thank you and everyone else who records when they're having issues with the 10L1000. I hope it KICKS GM IN THE ASS! That being said, I am the only Trans tech in my chevy dealer. I have 1 truck right now waiting for a valve body on backorder since July 26th. They authorized a transmission replacement today. Which means valve bodies for Allison are so far on backorder that GM is willing to replace the transmission for customer satisfaction. If that doesn't tell you something. I feel for you fellows that paid 70 or 80 or even 100 grand for a truck that you can't use. It's robbery frankly. On a side note. I've been seeing a pattern that the 10L1000, as a whole, only last about 100k miles. So take that for what it's worth.
I have the 2023 DuraMax 3500 6.6 Hd and it’s doing the exact same thing you said yours is doing in this video. Check engine light comes on and then the transmission makes a noise and then it pops up on my screen “ speed has bee reduced “ and i can only do about 45mph
Yup. Make sure to keep all paperwork form dealership from warranty work. If it’s in the shop longer than a month you can usually file for compensation thru and attorney for lost value but it has to be documented. The more service it needs the more money you get
Question for ya. When you used your exhaust brake did it seem to mess up more? Mine seems to. It won’t even let me turn the Exhaust brake on sometimes and this is when it seems to be running fine and no check engine light is on. Definitely won’t let me turn it on when the check engine light is on. I deliver buildings everyday all day 3 or 4 a day and I need a properly work transmission.
Time we all get together and make them do something like they did for the 8 speed class action lawsuit
I have the same truck , having the same issue , sticking in 3-4 only get to 45 mph, been waiting a month and half, according to gm the valve body was milled to small for the shift solonoids,under warranty 50,000 miles. You can shut off the truck open the door and restart and it will reset for a little bit.
Good luck it will work a few times until it doesn’t . I’m out off commission until I get to my appt, 2 more weeks
Sorry to hear that. Already dumped it for a ram with aisin. We shall see if it is what they claim
Have a buddy with the new ram. He likes it; he got stuck in his driveway within the first month.. some issue with the transmission. Lolz
It got sorted quickly though. Been lucky so far with my Silverado, but I only have 23,000 miles on it.
I’m having the same issue with my truck is there a class action law suits I can join?
5:36 PST yep same year here, same problem. I was told there is not even a valve body available. No idea when they will get the part. Ridiculous. Mine is also my work truck. No rack, no tools, how do I work. I am pure Chevy, got a bowtie tattoo. Seriously displeased. I am in Oregon. Sounds like it is happening everywhere. Bummer. My 2016 never has had a problem and I beat on it more than the new one. Ugh!
At the almost 2 month mark they finally put a new transmission in it.
I suppose you weren’t able to get anything from GM for being out of a truck for so long?
Just had my 23 gmc 3500 srw towed to local dealership. 6.6 with the 10 spd. I’ve owned the truck for 2 weeks bought it used from gmc. When downshifting it will clunk horribly metal on metal and send it into limp mode.
Reset the code and it runs fine for a week. P0700 code with no other code on the reader I have. I do 70k a year I’m about to buy a low mileage 7.3 again and wait until these spacetrucks get the technology caught up with the sales pitch.
Dale problem I rely on it for my business and the only local gmc trans tech has been on the same vehicle for 3 months. Welcome to 2023
It’s a sad issue and an even worse solution. Sorry to hear about yours, hope you find something reliable soon
2022 Hd 21000 miles! Happened to me day before yesterday! Driving down road at 55 then it down shifted to 2 or 3rd and went into limp home at 35 mph! Now I’m waiting on a valve body! No time given! Wasn’t even towing
Anything!
Sad reality with this new GM 10 speed sorry to hear it! It’s a total joke
My 2024 Duramax had trans fluid dripping in the first week. Havent seen anything since. At 6k miles now. I remember my father buying a new 2001 dodge with a 5 speed manual. Id rather have a manual. BUT. He then broke the transmission 3 times in first 60k miles. Last time in middle of Georgia. Lucky he had money to fix and time. He spent a week at a little shop. They installed a allison. And the truck went to 250k no problem. That was a REAL allison
My 2022 has trans leak also n at 15k miles been in shop for 2 months now
@@jessebenitez541 mine is leaking again. Who knows how long they'll need it but it's about to go back in the dealer. I figure every day it's not functioning for me to make money is costing me at least $200 a a day so if they have it for 2 months it's going to cost me a lot I think I'll send them a bill
I'm at 9,200 miles. that's freaking pathetic remember the days when you can buy a brand new Chevy and it will last you for 350,000 miles.
Output speed sensor ???? I don’t have the 10 speed but was having issues and changed sensor it’s working 100% for past 60 days good luck
So far, so good with truck.
Tail gate was going down on itself when it was below freezing. For a recall notice about that, with no solution yet.. no big deal. Other than that, truck has been great so far...
I’m sure something will fuck up though.. hope not. These trucks cost quite a bit. Got this to replace my 6.4l 2008 f350 with highish mileage.
How do we go about opening a a complaint against Chevy or a lawsuit
Dude holy crap. I was looking at trading in my 09 duramax for a newer duramax but after looking at and reading all of these comments its definitely starting to make me think i should just keep my 09. Hate to see the newer trucks having this many issues. My truck has been super reliable.
Keep it. Update the interior or do something to make it feel new to you, but I wouldn’t go near a GM HD if I had to rely on it
What did you end up doing im in same boat may just go with a 2019
I have a 2022 GMC 1500 Denali 3.0 Diesel and my Transmission Body Valve went out. They had my truck for 3 weeks called me to tell me that a new Body Valve came in and I could pick up my truck the next day. They called me the next day to tell me that the part was defective and they had to order another. It’s been 5 weeks now with no word of when my truck will be fixed. The only good news is they gave me a brand new Elevation to drive which I have put about 1,400 miles on. However, it’s not my Denali!
You’re the first person I’ve heard that got a loaner while they wait. Hope the ‘nali gets back on the road asap
My ‘23 3500HD with only 15k miles just did this same thing this afternoon. We were getting ready to go camping for a long weekend. I pulled P0700 and P0747 codes. Looks to be the same issue as everyone else. Super frustrating for a 92k price tag.
I’ve got the same exact codes on my 2500hd at 48k miles. While driving out of town for work. It’s bs for the price we had to pay for a “reliable truck” as I thought it was.
Have a 2024 2500HD that is gas, but my A/C compressor went out at 55k miles and picked it up after the repair and the same day my transmission valve body went out. I’m probably going to trade it in on something else. All repairs were covered under warranty but I’ve gone 6 weeks without my vehicle that I use for work as well. Never towed anything with the truck but put about 50k miles a year on it. Very disappointing. Neither part should have e failed and both had over a two week back order wait time on the parts from GM.
I’m in the same boat as everyone else. Truck has been in the shop waiting on parts for a month and a half. Has anyone out there gotten any compensation from GM for not having a truck for months??
I’m in my second company truck now because like clockwork these transmissions keep going out exactly how you described. Today(third truck) right now as I am typing this my truck is in limp mode as well. First two trucks are still in the shop to this day 3 months later.
My 2021 that I've had for 6 months now has 140k miles and is having a similar issue. I've lost reverse and only have 1st gear in drive. Dealer says valve body. Has anyone considered or know if one could swap these 10 speed junkers out for the old 6 speed like the previous l5p had?
Same thing is happening with my 24 2500 gasser, been at dealership for 3 weeks. They’ve been throwing parts at it but seems like they’re still having issues.
I think you’re the first gasser to comment on this. Thanks I hope they turn it around for you
@@aslife3813 In my experience, I was stuck in 2nd gear. The tranny tech installed a new valve body, that one failed during the test drive, ordered another one, now the tranny control module is throwing a code, GM has to custom make these for each truck is what I was told and there’s a back log, tech installs new TCM, now they’re having issues with programming, and TCM is still throwing a code.
@@aslife3813my 24 gasser has a very hard shift only from 7th to 8th gear when accelerating. You don’t have to be accelerating hard ether. Maybe running 2400 rpms. I wish I had kept my Ram 2500. Very disappointed in this truck.
2023 3500. 60k miles and it’s having a similar issue with second and third gear. Just had the valve body replaced and still having a hard shift. Bummer
How long did you wait for the part? Ive been waiting 4 months for my valve body for my 2023 and they still have no ETA. About to trade it for a Powerstroke. Third Duramax since 2015 and it might be my last.
Same thing happening if you wanna spend the money next gen drivetrain sells part hella expensive though but no wait time for valve body
Currently waiting on my 2023 Duramax 3500 with a valve body issue. Been 3 weeks. The part is in such demand due to failure GM cant make enough. Bought the truck new for almost 90k. Only 18k miles on it. GM is still manufacturing trucks that will have the same issue. Im about ready to sell it and get a Cummins.
Sorry to hear it! That sucks it’s an unfortunate situation
Any updates on what was the solution in your side?
I’m having the exact same problem..
I’m on 52,000 miles and I do have warranty service, I’m still waiting on the dealer for parts.
My first experience with an HD truck but my 2023 2500 GMC w/30k miles has been at the dealership for a month tomorrow, and I’m being told the valve body is on “indefinite backorder”. I was also told that they currently have 5 trucks waiting on the same part. Seriously, how does a product fail at this high of a rate?
Sorry to hear it. Unreal there hasn’t been a recall but I’m sure it’s because they simply can’t produce them fast enough for it
Any update
@@akaixl83 They ended up having it for 7 weeks. We got it back about a month before we headed out on a 5400 mile trip out west. They replaced the valve body and we had zero issues towing 8,000 lbs from Indiana to Glacier NP in Montana and back. Not a single issue and is still running great.
The issue on the GM 8 speeds was due to the wrong fluid. The original fluid grabbed too much moisture from the air. Mobil1 came up with a fix and they even slightly revised that one more time. With the proper fluid via a triple flush from the dealer, the 8 speeds eventually worked very well. I wonder if these 10 speeds need a better/different fluid? Have a Ford Super Duty Powerstroke on order and was looking to order a 24 Sierra 2500 HD AT4X diesel, I'm disappointed to see so many of these HD 10 speeds having issues that GM can't readily fix.
Agree! Hope your new rigs stay on the road for you
Both trucks you mentioned use the same transmission. GM licensed the 10 speed from Ford in exchange for Ford licensing the GM FWD 9 speed. The 10 speed uses a unique Ford-developed fluid, Mercon ULV.
Didn't experience that with the Mobil1 fluid and 8 speed. It also had short service life....
they said the trans would get too hot, but I never towed and I don't think I ever saw the temp over 190.....
Sorry to hear about your truck. I have a 2022 GMC Sierra refresh 1500 duramax. My transmission is also experiencing a stuck valve and the dealer only has 1 transmission tech. So I’m waiting to take it in later this month. With that said, even if they fix the problem, have you heard that it will happen again? I really enjoy the truck, I went from a 2005 GMC Sierra with the 6.0 gas engine to this diesel. It’s my first time owning a diesel and I mainly chose the diesel because of the great gas mileage. I’m just hoping that this is not an ongoing issue. I
Aside from wanting a new truck, my main reason was to avoid any major engine or mechanical issues. I just hope this isn’t a defect on the part of GM? Thanks again for the video.
If you look at the other comments, looks to be close to 76-80% of them are experiencing the same issue with the transmission. In all platforms too, 1/2, 3/4, 1 tons and big suv. I hope they get you fixed soon!
Gm gave away the only thing that made them worth a damn.
Wow... Just had this same issue on my 2020 2500HD LTZ(94k miles) about 3 weeks ago. Been sitting at the dealership for 3 weeks, no loaners vehicle, and they're trying to give me shit about my Edge Cts3 monitor saying they need to check the calibrations because I have a "tuner" on my truck. Its BONE STOCK, never been touched! I see from this video and the comments that im about to endure some bulls*** from the dealership. To add insult to injury, they're telling me a valve body is about 3 months out and a new transmission is about 6 months out. UNACCEPTABLE!!!!!!!!
🐴 💩 man I’m sorry. Dump it if you can
@aslife3813 new truck prices are asinine! I know the calibrations haven't been tampered with, GM isn't getting off that easy! Going to be a thorn in their ass til I feel justice has been served!!
So sorry man! I hate when something like this disrupts life. I have a 2022 Trail Boss Duramax half ton with the 10 speed transmission. It has been at the dealership for a month waiting on a valve body. I hope they figure it out. No ETA on when the part will be in from GM.
That sucks! Keep your paperwork. If it’s at the dealership multiple times or for more than a month you can file a suite for lost value
Good to know!
if you are referring to lemon law lawsuit then yes. I reached out to GM while my truck was in the shop also a 3.0 2022 d max. Was there for 6 weeks trying to fix a def issue. I could go through lemon law but no guarantee i'll get anything from them. GM wouldn't do a buy back or anything. I was out loss of use, loss of business for my customers, actively turning away work, and they offer me GM rewards points lol. I figured in total was out around $5000 in that 6 week period. still trying to decide what i should do.@@aslife3813
Maybe I should get the baby cake Colorado zr2 instead of the hd zr2. This GM starting to make me wonder if I should stay loyal. My 07’ Tahoe Ppv still strong but I want a nice (new) dailey in Houston. I’m sorry, brother. GM is really messing up lately
I have a 2022 2500 Duramax ot has 145k on ot and just had to have the trans replaced at a cost of 9k. They replaced the whole trans. Only because they could not replace the valve body.
At least you made it to 100k+. I didn’t make it to 60k
2023 2500hd same problem. Transmission on national back order. It's my service truck for my air conditioning business. Going to get truck from dealer and take to suncoast in ft walton fl to build it. 12,500.00. 3 year unlimited mile warranty. Sucks big time.
We have been broke down in Smyrna Tennessee for 3 weeks with exact same problem and waiting for the dealership to work on it and ours is a Chevrolet 2022 with only 16,000 miles and we don’t know what the do cause it pulls our 5th wheel
Any update
Same thing happened to my 2023 Chevy Silverado 2500 28,000 miles truck is now at the dealer undergoing a total transmission replacement been there for 3 weeks now
Sorry to hear that. Seems like none of the new stuff (even aisin is failing, my FIL got a brand new one and he didn’t even make it to 15k before total failure) is hood anymore
Is there any law firms that can help on this issue this is really upsetting that’s the reason we buy new truck so we have something reliable
This just happened to me yesterday on my 2023 Silverado Duramax 3.0. I got a P0700 / P0747. With only 20m miles. I dropped it off at the dealer since I have warranty still. Wondering if the same supply issues are happening and if GM will even loan you a like for like car while you wait for it to be fixed. Any luck anyone ?
This just happened to mines! WOW . 2023 gmc 2500 Denali
On the same boat I wait for it to cool off then works trading mine in asap 23 2500 hd 25k miles dealership says will take months to get to it
The same situation with my truck chevy silverado 3500 2023
Now my truck is stuck at the dealership. That's awful
Same problem here 2021 duramax, replaced tranny 3 different times on a 55,000 mile pickup, does trans tuning cure this problem?
When you obtained your banks IDash did you get the inline tuning module? If you did get this module what tune is it on? its got 5 presets. I had a very similar issue on my 2022 Duramax L5P. When you run higher levels of power on this transmission you need to also increase the transmission line pressure to avoid "Funny" shifting and behavior. Long story short mine would sputter really bad when trying to downshift from 10th to 9th on the highway to pass but would clear up as soon as i let off the throttle. The only thing you can do to increase line pressure is getting an aftermarket TCM with proper corresponding tunes.
Nope not tuner. I no longer have this truck as the transmission was built by a toy manufacturer
Dam same old shit!!!
Have a 2023 3500. 20,700 miles drove from durango to pagosa and this exact same thing happened once I got into town. Very frustrating
Sorry to hear that I hope you can find a dealership to turn it around quick but it sounds like they’re running low on valve body replacements if you see the other comments
We haven't had the truck 2 months. They can take it in on trade. We had it towed to durango. See how things go today
Had same issue with my 2022 AT4 2500 Duramax. Truck was out of service for 2+months. New transmission and valve body replaced. And my truck only had 5500 miles on it! 😡
2023 GMC Denali 3500 HD 30,000 miles. the same problem, a New Valve body was needed, Took two weeks to the day to get it repaired,
Hope it holds!
My 2020 denali trans gave out at 10,000 miles and it was stock just lift on 37s .
37’s look great sitting on the lift at the dealership
Good luck to everyone. I believe they know from day one that the problem is there, and they prefer the money and I fixed later, which is what happens; it is embarrassing and also inflicts a lot of pain and stress on the consumer doing that if you only have only one truck to doing business, you will end it in a difficult situation with your customer that they don't understand the problem and wanted the job done.
2023 2500 28000 miles was told bad valve body was bad same issue no parts a available and no can’t give me a date when it will be fixed
Soooooo many of the same comments. Sad man I’m sorry
Any update
Did they ever come up with a fix?
I have a 2020 sierra 1500 diesel with 52k that is having trans problems. They believe it is valve body.
Yeah…..traded in and got Aisin
@@aslife3813 what’s a aisin
My 2023 is in the shop for the same exact issue.
I HAVE A 2023 GMC AT4 3500 ON MY 2ND TRANSMISSION AND IT JUST WENT OUT AGAIN IN VEGAS AND I LIVE IN ARIZONA NOT HAPPY AT ALL WITH ONLY 40K MILES
I’m sorry to hear that, especially so far away from home. I wish we would hear something about a recall but I haven’t
2022 with 19,000 miles too. Shouldn’t be having a problem
Gmc 3500 gmc sierra 2023 just had the same issue they replaced the valve body also truck had 27000 miles
Did gm replace your tranny? I just had this happen for the 2nd time and only 5000 miles on the truck. They did the valve body the first time, hoping they will replace the whole tranny
Just happened to my 2021 GMC 2500 hd 40000 miles don't know when I will getting it back we need a class action lawsuit.
I am having the exact same problem with my 2024 Chevy 2500 at 35,000 miles
Yes, not enough on this subject on YT. My 9 month old 28 K Silverado has been stuck in Birmingham, Alabama, for over a month and two weeks. I do spesalized construction for a living and have to tow a trailer across the country to do this construction work, so I buy a brand new truck every two years or so . It turns out i'm gonna have to go buy another truck to replace this truck. This is a very expensive endeavor. Is on my part being without a truck. No word yet on when they will get a valve body for my ten speed Alison transmission. And I need to be in San Diego by next monday. Or lose out on a fifty thousand dollar gig. So yeah.
I have to buy a new truck and i'm out of town still in Alabama , I still owe forty thousand dollars on the old truck that I can't trade in . Im trying to get GM to buy it back. This kind of thing hurts.
Are you thinking about trading the truck in if they can’t fix the problem for good?
Just thinking about that today. Really don’t want to but if I can’t rely on the trans then I might have to. With higher rates and truck prices tho I’m hoping to avoid doing thay
I’m having the same issue 22 Yukon 5.3 50k miles
Great…. Just bought wife a new Tahoe with 5.3. Awesome
Mine just did the same thing today! Sucks!!!
Sorry man! Keep all paperwork from dealership
2023 GMC 3500 HD 40,000 miles , same issues going into 4th.. dealership says no parts in country! Plus they won’t step up and give a break on trading.. they say they will screw me basically because the truck is broken and I will definitely be upside down in payments now.. what a joke and scam.. same dealership that sold it to me a couple months ago..
no problems so far 4 k miles 22 2500 ltz
My 2023 had 60,000km on it and this happened. 4 Months and still waiting for it to be repaired. What a joke.
4 months?!
Having same issue with a 2024 2500 he dramas with Allison
My 22 trans went completely out at less than 12k miles
GM is having real issues with transmissions, the 8 speeds are having even bigger problems. After having a problem myself, I've opted to trading them in every year or so. Remember on 8 speeds, the warranty is just 60,000 miles.
just happened today on my 23 gmc sierra 2500, 40,000kms trucks at the dealer
Noooo! Sorry to hear that. Hope they flip it quick. Bet they replace valve body
Problem is that Allison doesn’t actually make that transmission, GM does and Allison made the mistake of allowing GM to put the Allison name on it
Crazy. When did Allison stop being used on GMC?
💯
@@projekt6792020 and up
With all the information on GMC quality it surprises me anyone buys these proven unreliable vehicles. I will say its a great looking truck.
Does the 6.6 gas and Duramax use the same 10 speed tranny?
I’d imagine they’re very different when it comes to internals, clutch discs, etc
I am told they are exactly the same 6.2 has a smaller 10speed
I am dealing with the same issue
Same thing with my 2023 Chevrolet LTZ 2500 Flat ground 40-50 mph started slipping. 30,000 miles. I like the way the Chevy drives but may be time for a Ford.
i just experience today de hard shifting on my 23 duramax 45 50 mph stock on 4 or 5 gear am desapointe now
Sucks man. Sorry to hear! I’m looking at a 4th gen manual g56 currently so I don’t have to worry about an automatic anymore
having the same problem.