General Motors Hit With New 8-Speed Automatic Transmission Lawsuit
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General Motors is facing a new class-action lawsuit over claims the automaker shipped vehicles with faulty eight-speed automatic transmissions.
GM eight-speed automatic transmission
This class-action suit was filed against GM in the U.S. District Court for the Eastern District of Michigan, Southern Division. According to Car Complaints, the plaintiffs say the GM eight-speed automatic transmissions in certain vehicles “slip, buck, kick, jerk, harshly engage, suffer abnormal internal wear, sudden acceleration, delay in downshifts, delayed acceleration, difficulty stopping the vehicle, and eventually require replacement of the transmission or its components.” These problems are allegedly traced back to an issue with the torque converter that causes excess friction.
The lawsuit also cites more than 60 technical service bulletins and service updates put out by GM regarding the eight-speed transmission problems, saying these documents are evidence GM was aware of problems with the transmission and decided to sell the affected vehicles anyway. Separately, C7 Corvette owner complaint submitted to Car Complaints back in 2015 stated they were told by a “GM insider” that the automaker was ” aware some transmissions are defective and is working on a kit to fix the fluid starvation problem internally,” which is allegedly the reasoning for the shuddering/jerking transmissions.
Numerous class-action suits have been filed against GM over its 8L45E and 8L90 eight-speed automatic transmissions in recent years. The automaker sought to have one of these suits thrown out last August, claiming the transmission problems are related to a design defect and not a manufacturing defect. GM’s vehicle warranties only cover manufacturing defects with parts and components and not design defects. Most of these suits claim all vehicles with these eight-speed transmissions are defective, which would imply a design defect and not a manufacturing defect.
This latest class-action suit calls on GM to reform its warranties to address these transmission problems and also issue a recall for affected vehicles.
The full list of affected vehicles in this class-action suit includes:
- 2015-2019 Cadillac Escalade/Cadillac Escalade ESV
- 2016-2019 Cadillac ATS
- 2016-2019 Cadillac ATS-V
- 2016-2019 Cadillac CTS
- 2016-2019 Cadillac CTS-V
- 2016-2019 Cadillac CT6
- 2015-2019 Chevrolet Silverado
- 2017-2019 Chevrolet Colorado
- 2015-2019 Chevrolet Corvette
- 2016-2019 Chevrolet Camaro
- 2017-2019 GMC Canyon
- 2015-2019 GMC Sierra
- 2015-2019 GMC Yukon/Yukon XL
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This tranny is a turd.
gm engineers have “big guy” moments and those are not covered by warranties.
You must think that the 10 speed is also a turd, as it’s Internally almost identical to the 8 speed with some minor changes, the biggest being changing 1 of the gearsets to feature and additional clutch pack. The fluid flow, housing, asymmetrical pump are largely unchanged.
This lawsuit needs thrown out. The problem has long been discovered that Mobile 1, not GM is responsible for the fluid that didn’t reject water efficiently enough, and that has been fixed,and if you haven’t addressed it by now it’s on you. GM issued fixes to ever affected owner. Toyota doesn’t even do that. It’s absolute BS that the lawyers are going the “design failure” route. Throw the engineers under the bus. Like they never throw themselves under the bus for the team, just everyone else
This, plus a thousand. I’m a master GM tech and GM is not at fault for the transmission problems, it’s been Mobil1. They first came out with a first design fluid and that fluid didn’t have the right properties so it creates all these issues. We then flush it with the 2nd design fluid and all is better. Mobil should be hit with this lawsuit, not GM.
Then tell me why the problem dosnt go away after the dealer did the flush. GM can make all the excuses they want, fact of the matter is that GM is willing to ruin their reputation and loose customers rather than deal with it like they should. I had one and got rid of it Will not buy another vehicle with that 8 speed transmission
It’s most likely the dealer’s fault then. Either they didn’t follow the specific procedure on the flush or follow up with it. I have flushed about 200 vehicles and have not had a problem with a single one because I follow the specific procedure and make sure there’s no shudder or shifting afterwards. The bulletin constantly gets updated with new procedures and relearns so it’s important for dealers to check on this.
I have a 2018 g m c ultimate Denali. I have had the transmission flushed by the dealer and it did not solve the problem. They also did a process called relearning or rebooting the computer so more fluid is sent to the solenoids during acceleration. That did not fix the issue either. The dealer has had my truck for over a week now. I have not heard from them and have no idea what they are up to. I wish I would have done more research on the vehicle before I bought it . Transmission issues on a $60,000 + vehicle that has 20,000 miles on it . Not a happy camper!
Thomas, this is Daniel.
Your post is about the only 1 that really makes sense on this whole thread. I belive it does start with a fluid issue. However, letting that go on for too long of period can result in some internal mechanical damage. In which case, what is GM doing about that. I am the second owner to a 2019 silverado 1500. It kicks extremely hard down shifting from 2nd gear to 1st. And all the dealers are telling me is that there is nothing they can do. The truck only has 51K miles and should still be under warranty. Is it possible to get a new transmission due to this issue?
I have a 2015 Denali with the 8-Speed. My transmission went at 34,000 miles.
GM wanted $6000 for a transmission. I wrote a few letters to their customer service folks and worked through a service manager.
I received a remanufactured transmission with a 100K mile warranty for $1,995.
I have about 700 miles on the trans so far. It has shuttered twice during this time and hopefully reprograms itself.
I don’t have high hopes, but my fingers are crossed. 7 July 2022
Hi David R, I have a 2015 Acadia SLT. The trans went at 101,000 miles. I believe a few weeks earlier GM would have at least partially paid but not sure. Tranny replaced with a GM factory rebuilt as they had no new OEM trannys in stock! If that’s not telling I don’t know what it. That took a month and that tranny lasted 4 days until it smoked and seized. Waited another month for another rebuilt. This one has been shuddering and bucking at low RPM. Dealer says it’s normal. 20k miles on it and it still runs. Cost me $6400 and comes with 100k mile warranty. My 2008 Acadia lasted 240,000 miles with no trans issues. A bunch of other issues (timing chain, water pump, etc) but not trans. I have an old Mercedes and the trans still runs smooth. I have only owned GMC SUV’s since 2004. I don’t see myself buying another. Not sure why GM engineers can’t up their game like some of the foreign companies have done.
How do I get to be part of this lawsuit? Had so many problems gm finally authorized replacing my 2017 Colorado transmission with what they called a new/rebuilt transmission. Still have same problems.
What city are you in? I like to bring my car to you because it’s still doing it since the 2 flushes. I would like to keep my car but the vibration and shuttering is too much
I have a 2017 sierra and the dealer did the fluid flush and kept doing a reprogram and trans still has same issues it allways had shifting hard clucking when fully stop vehicle and trans clunking in gear
Sounds like they did not reset the transmission adaptive learn and/or further learn the clutches. There’s another procedure to learn the specific clutches to help the shifting issue.
You aren’t going to get promoted just because you are sticking up for gm sorry.
Thomas, where do you work so I can bring my truck to you?
I’ve had flushes reprograms GM will not stand behind there crap. Still having the same problem as you Robert. My 2017 GMC Sierra is the last GM I’ll buy.
I have a 2017 Colorado and it’s never been right. It was put in the shop when we first got it. It has been in the shop 4 times for a jumping transmission. It’s never been right. It jumps real bad. It’s only got 50 thousand miles. I gave up on it.
I will never buy another GM! I have a 2017 Yukon and currently paying $6000 to replace the transmission. Never have I had issues like this with my vehicles. I currently also have a Nissan Pathfinder with 480,000 miles that runs beautifully. Shame on GM! A recall needs to happen.
Same thing with me cost me $6000 unbelievable truck had 75,000 miles on it
I had to have the transmission on my 2016 sierra rebuilt at 82k. I’ve been complaining about the transmission since day one of owning it. Add me to the list of unhappy costomers who will not buy another one. People can blame the oil or blame whatever makes them happy, bottom line is every other generation gm I owned drove 1000x better well over 100,000 miles. My 99 Silverado drove smoother at 289k on original tranny. These trucks cost too much to be equipped with junk and no legit fix. It is ridiculous
Its GM stamped & Sold under GM. Regardless if your paying big money for a vehicle you expect it to last. Its be different if we assembled the trucks ourselves, but we’re given the transmission GM approved to be in these vehicles.
Had mine flushes twice by GM and trans is still screwed up and now I am getting trans codes off and on.
Ok, then why isn’t chevy recalling all affected vehicles and providing the flush, that only makes sense. I am going in tomorrow for the flush and fluid change. I just started to feel the shudder. Even if they don’t experience it, I will pay out of pocket if I have to. GM should step to the plate and take care of the customer and then go after Mobil. To say this is Mobil’s issue and not GM’s is just wrong.
That is just GM’S way of doing business. Go for the short term profit and not worry about the long term effect. The way I see it in the long run it if you lose your customers you lose your profit. Then what they sit down on their empty money chest.and think how they should have treated their customer. There is this thing called taking responsibility. Apparently no one at GM has ever heard of it.
No, they just ask the federal government for some more bailout money
I just bought a 2022 Silverado and after 2,000 miles the trucks displays all of the shutter, erratic shifts and seems to want to drive it self patterns discussed. Problem still here inn2022 and I feel like I got scammed on this very expensive truck.
I have had the dealer”flush” AND changed it again at the dealer after another 60,000 miles and STILL clunking away, hard shifting, hard downshifting as well. I call BS on the “mobile one” excuses!! They claim it is “normal” shifting!!!
I also was told by my local dealer that if I paid $229 to have my transmission fluid changed to a new type recommended by GM that all my transmission trouble should be over they are not over and I’m out $229 supposedly they paid the laborThis is in my 2017 GMC Canyon
My dealer had me pay $700 for my fluid change and I still have the bucking issue in my 6 speed tranny form 2016. They then showed me paper work from GM that said this is expected behavior and said good luck. Been dealing with it to this day.
My 2016 Colorado Z71 v6 had the same problem until I found out about 2 service bulletins that address the bucking and poor downshifting (Gm did not notify customers however). The dealer reprogrammed the transmission and engine control modules and the truck now shifts fantastic. The fluid is still the original; your dealer did not perform the proper service if he changed the fluid without reprogramming the transmission and engine modules. The work was performed under the power train warranty at no cost. Find another dealer – you do not need to put up with the poor shifting.
After two flushes and a reprogramming, my trans is starting the same issues. And it hasn’t been a year. My service rep told me it has to be flushed every year, and this is unacceptable. I’m also a tech (prototype) and the engineers along with the supplier are responsible. Someone should get on the ball and fix the issue.
Had mine flushed and is worse now. So much for it being Mobil 1 fault.
These people bought their car from GM, not Mobil 1.
Ive got a question as u seem pretty knowledgeable, 93 k1500 suburban with 4l60e. Trans is being rebuilt for the 4th time on 3 months. Keep losing 3 and 4. Have replaced tips and connector as well as pigtail on trans. New harness in trans solenoids my trans guy says he has done everything he knows to correct the known issues and that issue must be in pcm?? Any thoughts?
that’s a typical failure for the 4L60e. Never tow in 4th or Overdrive. Install a transmission cooler. Your rebuilder should have already told you about the weakness of the early 4L60’s. He should be upgrading the clutch packs since your having problems or simply upgrading you to the 4L65e which solves all the early weaknesses. (ALL ARE INTERNAL PARTS) And did I say never tow in 4th. I learned the hard way. I Installed a transmission temp gauge that which I now use whenever towing. My current un-serviced all original out of a junk 4L60e has 200k+ miles on it because I watch the temp. Previous rebuilds were lasting almost a year. Quit towing in 4th and it’ll last or pay for the upgrade (parts) to the 4L65.. I plan to rebuild my 4L60 up to the 4L65 when this one eventually wears out. Don’t feel bad, your not the first to learn the hard way on these transmissions, your rebuilder should have advised you.
another problem is all that up and down shifting when towing in OD that puts wear on the parts. anytime i am under 50/60 mph in my 2018 silverado i am in 5 gear to prevent all that up and down shifting and it stays out of cylinder deactivation. the newer silverados have a trans temp gauge built in to the display
1993 is the very first model of the 4L60E transmission. The 4L60E transmission has been updated multiple times and your transmission rebuilder should check and install all upgrades or the transmission will keep failing prematurely? I recommend replacing the transmission valve body with a reputable valve body rebuilding company? I do my own valve body rebuilding and updates to successfully FIX the dreaded 3-4 clutch premature failure, there’s so many different areas in the transmission that must be checked and fixed properly?
To fix the 3/4 clutch ALL PRESSURE ISSUES MUST BE FIXED
Input drum cracks or internal leaks. Pump pressure issues. Servo and capsule leaking. Valve body internally leaking is one of the biggest problem areas?
I didn’t buy a truck from Mobil – they are not who I have a problem with. The truck is from GM – if Mobil supplied them with an insufficient product then they should go after Mobil, not let make the end user deal with it. GM asked for a product with certain specs, and they should have verified that the product met the specs. GM should issue a recall and then have their lawyers deal with Mobil.
Not true buddy, going in again for the second flush or torque converter replacement…the fix did not hold up too well
Not true, the 2nd doesn’t last either…it clearly is a design and manufacturing issue by GM
It’s scary to think GM techs and master techs think there is not an issue other than the fluid lol. Goes to show you the poor service backing up this garbage!
Didnt buy the truck from Mobil. My 19 came with with the updated fluid and still has every glitch possible. Its a easy concept to maintain customers. Do right by them and they forget the things that didnt work out. Only been in the repair business 40 years. Just a couple of thoughts
So what your saying is gm either didn’t test there vehicle design before selling to the public or they knew about it or they are simply not at fault for something they made and sold to customers? Yup blame it on the fluid makers and not the ones that created the transmission lol,I personally own one of these trucks and gm said since new that it was normal to bang downshifting to 2nd gear ,clunking while putting in gear and shuddering would require not 1 but 7 resets on shifting habits ,fluid swap 3 times and every other excuse in the book and after 4 years of calling and going to dealers they left me out In the dust and now the transmission is dead ,it’s simply stupid to hear that a company that not only made the truck but sold it is not responsible for the defects ,man these company’s are the new version of stupid
That didn’t help me. At 58000 miles I started getting the shuddering vibration under load. Fluid and filter change to the “new” Mobil 1 as outlined on numerous TSB’s only made it worse. Now I am staring at a rebuild and only pray that I’m not doing another rebilid at 120000 miles. If so, it will be the first and last GMC truck I own. Which is sad as I otherwise love the truck.
Install a Jasper upgraded transmission. Check them out online and call (800) 827-7455.
They made improvements to the design if you require a whole trans.
Thanks Dave, I will. Local shops are telling me I need a complete rebuild and that most likely, I will start experiencing this again in 50 -60K miles and will need another rebuild at that point.
I have never heard of Jasper but on a quick look, I have two preferred installers in my area so I will look into the improved design.
I’ve had transmission issues. Nothing major just something that didn’t seem normal. I took it to a local dealership and they said it needs a new valve body. 2019 Chevrolet Silverado LT Trailboss 5.3L w/ 8spd. I told them I needed a vehicle to drive and the service rep told me I was good to drive it. It’s been over 2 weeks now and no word of when the new valve body will be in since it is on backorder and coming from michigan to indiana. Also on the experience.gm.com/ownercenter/myvehicle when i look at my service records nothing shows up. Is it a requirement that the dealership upload service records?
Thomas you are right Mobil1 should have a lawsuit filed against them by GM. After GM replaces all the transmissions they sold to their loyal customers like me. I have a 2018 GMC SIERRA 50K miles and transmission started acting up yesterday. If this is a related problem and GM screws me it will be the last GM product I will ever buy. GM products are all I have ever owned.
They will screw you out of your warranty and leave you with a bunch of sad ass excuses ,they dragged me on thinking they would fix it all to wait 4 years back and forth and then being told it’s a design flaw and that I’m stuck with it and there was nothing they could do ,f—k gm ,cheap ass bastards ,screwed me out of a $90,000 truck and had a nerve to throw me to the curb,never again will I buy a gm product ,all there trucks are made with garbage Chinese parts,cheap junk
I have a 2021 Colorado with 6800 miles on it. So far its operating like it should… Should I be pro-active and have the trans flushed and fluid replaced BEFORE problems begin ? And is this something that Chevy dealer can do under warranty rather then wait until damage begins, cause once this happens, I’m selling and will never buy another GM product
What would you recommend on process and parts? I already changed my temperature sensor and oil ( high end mobile 1) and the issue is back after 4 months
I must disagree with you, I have a 2018 sierra that stated having problems and had it flushed out, it still shifts hard and sporadic, I also have a 2019 GMC Yukon xl that at 90,000 mile the transmission started slipping, took it to the dealer and they said yes it is slipping you need a new transmission and by the way we change them out so often that we keep them in stock like oil filters. This transmission is crap and GM needs to make good on it. they want you to pay 60 and 70 thousand for a new rig and it won’t hold up past 100,000 miles. It all BS if you ask me
GM sold it , it’s there fault. If GM can blame someone else, sue them. But the consumer shouldn’t have to pay for it!
Except in 2019 all vehicles with the 8 speed in the dealer lots still were forced to have their fluid changed as well as the option for anyone who had one to bring it in to change/flush the mobile one fluid out and reset the computers… the problem didn’t even slightly go away…. So the mobile one fluid idea was completely proved wrong.
The lawsuit absolutely needs to stay…anyone who claims it’s not an issue should be forced to drive one as their daily and maybe even take a long trip and tow trailers… just to see how unsafe they are.
I find it amazing that you consider that GM is not to blame for this latest testament to build quality, or lack of it. I know how GM works, and they specified the trans fluid they required, and contracted with the supplier who sold it to them at the lowest cost. GM made this decision, not Mobil.
I owned a 2017 Colorado that started having problems at 27000 miles. The dealer did the traditional GM “warranty patch” of changing the fluid, in an attempt to get this thing through the warranty period and hopefully not be responsible for anything. I assumed GM had learned it’s lesson on cutting corners on quality, but I guess not. I have purchased GM vehicles my whole life, however, as my son and I were talking a week or so ago, neither of us car understand why. I now own a Toyota Tacoma, and have only visited the dealer for service work. There is a reason Toyota vehicles hold a premium resale value and do not require rebates to sell them. I will NEVER let another GM piece of crap stain me driveway. End of conversation!
Gm would have followed up on this case, I have seen this with my experience. This sounds like a crappy service dept that’s cutting corners. If you still had issues after the flush and the warranty was expired, it would still be covered under warranty because of the first complaint.
The Toyota dealer in our town keeps getting stack of frames in every once in a while to replace frame problem on their vehicles just saying every Company has engineering problems. It would be nice if this situation will get GM to extent warranty on vehicles affected and reimburse owners that had to pay for repairs.
That is probably true, Glenn, however Toyota did not need to be sued to fix the frame problems, as they stepped up to the plate and volunteered to replace rusty frames, unlike GM who has to be persuaded to do something in a court of law. As I previously stated, “never again GM”.
I currently have four GM trucks in my stable. I’ve been a GM man since my first car which was a 1976 Malibu Classic and have a long list of General Motors vehicles that I have owned. My 2017 Sierra Denali is currently parked in the garage with a tranny that occasionaly slips. Toyota Definately has stepped up to the plate to take care of their problem and as you stated Bruce, they did it voluntarily! I’m getting ready to jump ship to Toyota just like several longtime acquaintances. I’m waiting for GM to do the right thing, but not for much longer.
This is not true do a search, toyotaproblems.com/frame-rust/, and you find Toyota did have class action suit on truck frames.
2017 Escalade Premium Luxury 31k miles
Purchased it to drive clients around while we wait for the 2021 that turned into a 2022 but still cannot be fulfilled.
First dealer we took it to after driving it around gave us the BS “We’ve never heard of this before” so they kept it to check it out and just as expected there is nothing wrong with it and its probably just your driving.
Took it to another dealer and at least that dealer said hey there is an update we have to do. So they changed the valve body. We’ve owned the car 2 years now and have to live with the hard shifts until we get a new model. Its complete BS to say its just a fluid change that fixes the issue.
You service techs on here saying it no big deal is crap. You only get to see them for 30 minutes on your bay. Try having to explain the crap hard shifts to all your clients everyday.
Actually there were numerous cost reduction revisions to the 8 speed that started to seriously affect its performance. The calibration guys worked frantically to try to keep up with changes and get the thing to function decently. The fluid was part of it but far from the true cause. The transmission has now been fundamentally fixed and I doubt any of the current production units still being used will cause customer complaints. The 10 spd transmission co-developed with Ford is a dramatically better design. Ford has had some calibration problems but the GM software and base transmission is “almost” flawless.
I like this post, in that the keyword here, as usual with GM, is “almost”. Well put, Bob!
The 6 & 8 speed transmissions were also co-developed with Ford, and I know this because a friend of mine is on the GM team that worked on it with the Ford guys.
The 8 speed is used in multiple vehicles, BMW, DODGE, FORD, CHEVROLET, etc
The biggest problem is calibration and valve body wearing prematurely?
I think most problems are lack of training at the dealerships???
GM built this transmission and put them in their vehicles. If some component be it fluid or whatever made by a supplier to Gm is the cause of the problem then they should be held responsible for fixing the problem not the customer. Happy customer could be a repeat customer and or bring you new customers. A mistreated customer could have just the opposite effect.
Old marketing saying, a satisfied customer will bring you 7 new customers, a dissatisfied customer will cost you 20 customers.
The fluid only addresses the Converter Shudder. Mine went away after the Fluid flush and TCM update. The harsh 1-2 and 3-4 shifting remained and are listed in a TSB as being normal. My dealer did not try and replace the converter or the valve body to fix these issues because of the “normal” TSB.
The torque converter drains overnight and that’s why you get the hard 1-2 shift. It’s a design detail, not a fluid problem. Read the TSB.
I have a 2016 and the dealer replaced the fluid and my valve body. Still having problems. I’ve had in in twice since the work was done and it’s still doing it. The dealer said they don’t feel anything. Now that my warranty is done I bet they could find something?
If the new Mobil 1 blue label fluid didn’t stop the shudder, replacing the torque converter is the next step.
And now that my warranty is up i have to pay for that. I think GM should pay to fix the problem. This is crap.
Not nonsense, DT, FACT. GM is the Democratic Party of the car building community. Lots of hype and bragging, little substance.
With a name like palmer i would expect a stupid politician comment, go stick your head in a toilet
I never knew a Miller who had brains enough to scratch his balls, let alone be able to carry on a reasonable conversation with anything other than his dog.
Go use your Palmer on yourself, you brought politics in, as usual maybe go vote for something 15 times
Uhhh you misinterpreted my “nonsense” comment. GMs response to the transmission problems is pure nonsense. GM engineers admit it’s a design problem and they think we’re dumb enough to believe that relieves them of their recall responsibilities. The entire board at GM is made up of a bunch of complete idiots!
My 17 Denali started the thumping on pull out right away. Took it in for service. They replaced the fluid with “better fluid”.
They said it would fix itself after about 400 miles. They never explained the problem.
Service guy gave me a copy of the service memo. I have had it back since hoping for a fix. They said they can’t fix it and GM won’t do anything about it. This is the first time I’ve heard about the defect vs design attempt to have the class action thrown out.
Unless this gets fixed, I won’t be buying another GM.
So I have a 2019 Silverado Z71 with the 8 speed transmission. I have had the transmission flush done twice now at my own expense at the dealer where it was purchased ($450 a pop). After each flush the transmission seems perfect for about 10K miles and then we are back to shudder, jerk, and jump. In a truck I paid 55K for I expect much better performance. In addition to the transmission issues mine also burns oil. I end up 2 quarts low at every oil change. I am a long standing GM guy and love their products but this one is not up to par.
Mike I have the same year and model vehicle with the exact same problems with transmission and oil burning… would really like to talk to you more about this, has the dealership provided any other fixes? How is it running now?
My car has been to the dealer countless times and I found that they never changed my fluid. I wonder how many other people this has happened to. My tranny is awful now
How do I get to be part of this lawsuit? Had so many problems gm finally authorized replacing my 2017 Colorado transmission with what they called a new/rebuilt transmission. Still have same problems.
i have a 2105 sierra with the 6.2 and 8 speed tranny, when i bought the truck it had 96000 miles on it. after i owned it a while i started noticing the truck shook and jerked.. i looked into some forums and found out that there are 3 computers that need to be flashed besides the mobile 1 upgraded fluid flush.. the first being engine ecm, second being tranny ecm and also read about the power steering ecm.. had all 3 flashed and the mobile 1 upgrade 2 years ago and this truck runs and drives better than it probably did new.. i think most of it has to do with the service by the dealer. i took mine to westside gm in berlin wi and i am 100% happy with the work and the proformance of this truck.. yes was upset at first, yes did cost me 600 bucks on a truck i just bought.. wouldnt sell it for anything now
I concur.. I have a 2019 CT6 and it clunks and chugs every day… sucks…
I have a 2017 GMC SIERRA. Having the same issues. I have taken it to riverside GMC here in Cartersville ga 3 times. They claim to flush trans the first time. Second time, the claim to flush trans and reset the computer in order for it to learn the gears again after driving it 500 mile or better in order to feel a differents. Well, that didn’t work either. Took it back a third time and said the didn’t find anything at all. Here’s the kicker,, when I purchased the truck, it was in auto mode. Didn’t have an issue. Drove it like this for about a month no problem. Ask my mechanic about it and was told that it should be in 2 wheel drive instead of auto. Well, when I put it in 2 wheel mode, that’s when all heck Brock loose. I think they sold me the truck knowing the issues everybody else is having for the morning of course. I will never buy another vehicle from them again. Karmas a …..
My 2017 Chevrolet Suburban1500 with 93,000 miles died of transmission problems with jerking, slipping, vibration and dying in the parking lot at Sam’s.
After a consult with my local Chevrolet Dealership, I was surprised to learn that this transmission had problems and the replacement cost was over $6000.00
I’m 76 years old and never had problems like this with my 2003 model which is still running.
The list price was over $70,000 and I expect GM to recall this transmission or fix it at no cost to the consumer. I’ve been driving Chevrolet since I was 16 years old and this transmission needs immediate attention. #Recall
Sorry to hear about it. Mine started up at 6K miles and Chevy wasn’t going to act on the repair. I gave up and bought a Ford. Hopefully, the truck will not have any problems.
I would close the doors on my business if I even thought about using the defense “it was a design defect instead of a manufacturing defect” to dodge my customers. Totally lost the plot on giving customers a quality product and experience in return for their money
2016 Yukon XL Denali 8 speed here and I was very disappointed when the transmission started with the rough shifts. Under warranty the dealer did the 1st flush which eliminated 80% of the shift issues (around 65000 miles). At about 89000 miles they had to replace the fluid again in order to replace a sensor in the transmission. Since the 2nd repair its shifts are close to perfect. At 98600 miles, it shifts much smoother than my friends brand new Subaru Forester and a couple of new rental cars I have driven recently. Not sure if it was the 2 rounds of new fluid or the sensor, but it is definitely fixed.
Don’t count on this being definitely fixed. You have a fairly high mileage vehicle, and most of these transmissions fail long before this. Baby this rig.
GM stupid excuses told with a strait face. How pathetic the management of GM is. Hide behind BS double speak and tell those who bought your cars to GFTS!!!!!!!
My 2016 Silverado has been flushed twice and had the torque converter changed… Still the same exact issue.
This is disgusting. People pay a lot of money for these vehicles and GM can’t even do their due diligence on making sure that major parts like Engines and Transmissions are operating correctly and that they should last at least 200k miles. They have only been making transmissions and V8’s since the mid 1950’s. Time for GM to get different leadership focused on quality and customer service. I saw another article where CITI is predicting that GM stock will hit $96.00, how can that be with all the numerous class action lawsuits and major recalls that GM is experiencing?
It probably gonna get thrown out like the other lawsuits. If GM gave a real fix to the transmission which seems to be the case, what’s the problem?.
No excuse! Don’t we have lemon laws for that? My wife had something much more dangerous. Remember the Ford Pinto / Mercury Bobcat with the exploding rear end? A nice rearender with a full gas tank and a hot muffler next to it.
How do I go about joining this lawsuit? I’ve had numerous issues with my 2019 GMC Sierra Limited transmission. I’ve also had it in 3 times for the 4WD actuator, the last time in the actuator motor was seized.
sounds similar to the excuse Ford used for the dual clutch transmission in the Focus
This transmission is junk. And GM’s response to this is why they are not regaining a dominate market position in the US or abroad.
I wouldn’t trust them with an EV either.
I own 2016 GMC Sierra 5.3 it has 113,000 miles. My transmission is shuddering when it shifts to 3 gear it makes a banging noise. I have changed the fluid wits dextron 6. Didn’t make a difference. Still acting weird.
2017 Silverado with a 8 speed transmission. Shortly after purchasing the unit new I had returned it to the dealership because of shifting issues. They kept the truck for almost 2 weeks and ended up replacing the transmission. Upon driving the vehicle after that it still had shifting issues and they kept reprogramming the controller for learning mode and even replace the transmission fluid to no avail. Ended up taking the vehicle to a different dealer and had the transmission fluid replaced with no effect and it got to the point so that every oil change I would go in and complain about the shifting and the reply back to me was it drives normally. The final stake in the coffin for this vehicle was after experiencing several hard shifts where it feels like somebody hits you from the back this happened once with my wife in the vehicle who was astonished to know that nobody hit us from the back and suffered a minor neck pain. After that I said this is not worth it, and sold the truck.
I own 2016 GMC Sierra 5.3 it has 113,000 miles. My transmission is shuddering when it shifts to 3 gear it makes a banging noise. I have changed the fluid with dextron 6. Didn’t make a difference. Still acting weird.
2017 Chevy Silverado same problem I had the torque converter and all fluids changed at the dealership I bought it from before my warranty went out and I can feel it coming back again. It’s been a year since then oh and how about the lifters that’s another whole other issue.
What lifter issue? You mean the few complaints you read on a forum and the occasional people that complain? Geez, there was a manufacture defect that was caught and addressed. Otherwise the problem is less than 1% of all engines made, it isn’t some big issue. All the other manufacturers have their own problems that are larger. Go troll somewhere else…
Let me guess, you’re the same guy that defended all the bolts that caught on fire
The majority of people who have problems with GM junk usually will trade the vehicle rather than argue the point with the dealer, or God forbid, GM. Usually will trade for another GM product, for some reason. People as a whole, however, are getting smarter, as most working class people can no longer purchase new vehicles, and have to buy used. An educated consumer is GM’s worst enemy.
You should change your name from “common sense” to “”dumba’ss” You can have my share of GN vehicles from now on.
I have a 2017 GMC Sierra with this problem. it is the worst transmission I have ever driven. I am aware of it evry time I drive the truck and prepare for the jolt every time I drive it. If not fot this transmission I would truly be happy with it. GM needs to step up and admit their mistakes – design defects included.
I bet you’ll be buying the new 2022 GMC Sierra huh ? GM knows you not leaving the brand
So yours doesn’t vibrate then? My 18 had a weird resonance that wouldn’t go away and led me to trade it in.
I am floored their defense is “it’s not a manufacturing defect, we just didn’t design it correctly therefore it’s not our problem”. SERIOUSLY?
Let’s give “Mary no more crappy cars” more awards and bonuses. Maybe they should because she said no more crappy cars nothing about crappy trucks. Then they stopped making cars.
Gawd what a sh@t show. Now they’re claiming to be the EV leader and the only EV they offer can and has just spontaneously burst into flames.
Just never ends with GM, looks like Mary lost all control
Look this was a problem for GM from 2015 to 2019. During this time GM had replaced a number of transmissions, Converter and tried several new formulas of fluid from Mobil One. It took till 2019 to find the solution and that was the fluid was letting the Converters glaze.
The solution was a new fluid GM offered as a free flush that fixed 95% of the issues. It not only prevents the glazing but also would restore the converter from a glazed condition if not beyond repair. If it was beyond the dealers would replace the converter.
This was a blazing topic on the Colorado and Canyon web site and a number of highly reporting threads on it. After the fix was offered the threads have vanished accept for a few post on trucks that were not taken in for the flush.
Mpg only has the fluid solved the issue but it improved driveability with no harsh shifts cold and smooth as glass progression today.
I can say GM did me right as They no question replaced my Transmission and converter in trying to resolve it with a new parts. They then replaced the fluid once it was available with no question.
Only a few people who drive high miles that were out of warranty had issues on not getting free repairs but even then I have seen some dealers do their best to try to help. Some not so much but that depends on the dealer.
If there was no solution I could see a case but the reality is GM in this case did work to resolve this as much and as fast as they could but till a solution was tested and proven they did replace a lot of parts.
GM has muff things at times with no effort to fix it but in this case they were very active to find a solution.
This is not also an isolated issue as many companies are having transmission issues as we add more gears and new fluids. Moisture has also been an issue is many transmissions as the fluids in some has drawn in moisture from the coolers in the radiator. Audi and VW suffered this.
Being a victim here to this point I can say my issues were resolved and it cost me nothing out of pocket. Not sure what else I could ask GM to do.
Their worst issue here was not finding this before it was in production. Shorter development times today are creating these issues for all MFGs.
well said
C8.R, agreed with all you said.
Is there any official documentation that mentions that the new fluid restores a torque converter from a glazed condition? (I understand as long as it is not beyond repair.) Not trying to troll, honest question.
Just bought a brand new 2022’ 2.7 liter turbo Silverado and have had these issues since day 1 morning start. Good luck getting any help!
How about new vette. Just wait few years
8 speed trans. New novelette. Junk
Its a totally different transmisson, the C8 has an 8spd DTC
Of course now we’ll get the, hey they fixed my truck, so that makes it ok..never mind all the people who’s truck they didn’t fix after years of living with the violent shuddering, and just traded them in because they couldn’t stand it anymore. Not to mention you’d have to be an idiot to buy a used one because I know people who got the new fluid and it didn’t work. As the lawsuit states, the problem is they kept selling the junk even though they knew they had a problem
The fix has been readily available since 2019. It has worked to fix most of the transmissions. You have to be an idiot to be offered a solution and not get it fixed. Even if the fluid fails the converter replacement would resolve it.
As for building them. Not an option to stop since there was nothing to replace it with. Also not all of them had issues.
Dude, the damage is already done. You can replace the fluid, but everything else is jacked up. The fluid stopped mine from shuddering, but it didn’t stop the horrible hard 1-2/2-1 shifting. I felt mine was unsafe to drive, and of course, it was just past warranty. GM didn’t offer a fix. It’s a band-aid. These transmissions fail all the time. They should be held accountable.
No surprise. This is just one of the many reasons that GM’s days are numbered.
I have a 2019 GMC YUKON
Checking to see if my GMC 2019 is on the list
Charlotte Ross
The amount of Camaro’s and Silverado’s I know of personally ruined by this transmission is absurd
But those owners will buy newer GM vehicles despite all the problems and in the end GM wins
Some will not. I was a semi loyal GM buyer until I got offered a free year of On Star as compensation for a blown engine at 75k on my last GM vehicle. Now Everytime I think about replacing my Ram and look at a GM I think been there done that and got the huge bill as a souvenir. I have come to realize that life is too short to risk buying a problem child
The amount of success with the repair is incredible. Had to imagine a fluid has fixed a vast majority of these.
Whatever happened with the good ol faithful….4L60E transmission!!!!!
I got 270000 miles, before I had to get it rebuilt!! Never had the first problem with it….. That was in my 1998 Chevy Silverado Z71!! Im still driving that truck, at 345000 miles! To be sure, I would think GM could get a transmission that would at least be as good as back in 1998….or even better!
Maybe things were built better back then….who knows!!!
No mileage from them anymore with so few gears.
If it were not for the CAFE we would still be driving a TH400.
I have 330,000 miles on my 20 year old 5.3 Z71 and still going. I am considering a new half ton but all the powertrain issues aren’t worth the risk. Therefore, forced to look for powertrains without fuel economy tricks which sacrifice durability. I don’t want to buy a designed for maintenance product, which forces a deeper relationship with the dealershiip. I have other things to do in life.
I had a 99. Absolutely the best pickup EVER. The 88-99 Chevy and GMC’s sometimes bring within a few dollars of what they sold for new, and for good reason. Look around as see how many are still doing the job they were designed to do. Really miss that truck.
Where can I sign up for class action lawsuit?
Have this issue with the trans, metal shavings ,dealer called said its bad, trans converter.