Now with more than 60 technical service bulletins (TSBs) filed related to GM’s Hydra-Matic 8-speed transmission, a class action lawsuit has been filed against the automaker.
Harper, et al., v. General Motors, LLC. was filed in the U.S. District Court for the Eastern District of Michigan, according to CarComplaints.com.
We covered this issue last year, but now it seems like this will proceed to some kind of court resolution. GM seemed to acknowledge this issue when it replaced some 8-speed transmissions in some GMC Sierras and Silverados, but that’s as far as the automaker has gone at this point.
When the words “slip, buck, kick and jerk” appear as it relates to a transmission shifting, that’s never a good thing. The full legal wording related to the GM 8-speed transmission says: ” (the transmission will) 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.”
The plaintiffs claim the transmissions cause safety hazards and expensive repairs once the 8-speed transmissions fail.
According to the lawsuit, the shuddering, shaking, jerking and hesitation comes from internal problems within the transmission and torque converter. And a judge who refused to dismiss the lawsuit said: “plausible inferences may be drawn that GM had substantial knowledge of this issue.”
The 8-speed transmission lawsuit includes these models.
The good news is newer vehicles don’t seem to be impacted, but this lawsuit, which has been ongoing for three years, is not going away. Additionally, there hasn’t been a full-fledged recall from GM.
Details from the lawsuit filing alleges “a GM insider said the automaker was aware some transmissions are defective and is working on a kit to fix the fluid starvation problem internally but has done nothing to inform owners of the potential dangers of erratic shifting.”
Further, the filing asks General Motors to “stop selling all the vehicles and replace all the 8-speed transmissions with new non-defective transmissions.”
Additionally, the plaintiffs argue owners should be awarded “actual, compensatory, exemplary, and statutory damages, including interest, including damages for economic loss including loss of the benefit of the bargain, overpayment damages, diminished value and out-of-pocket losses.”
Here are the law firms handling the case: Cohen Milstein Sellers & Toll PLLC, Gordon & Partners, P.A., Berger Montague PC, Capstone Law APC, The Miller Law Firm, P.C., Kessler Topaz Meltzer & Check, LLP, LLP, Keller Rohrback L.L.P., and Pitt, McGehee, Palmer & Rivers, P.C.
IF YOU ARE AN AFFECTED OWNER, CLICK HERE TO VISIT THE COHEN WEBSITE TO BE NOTIFIED OF UPDATES.
We wrote about this time last year that the saga continues. And now, 12 months later, the sage still continues. It’s understandable GM is holding its ground on this, as what’s being alleged and asked would prove to be incredibly costly. However, the fact this suit has not been dismissed by a judge shows there is some merit to it. Surely, things will play in court in some regard.
Without a last-minute dismissal, I’d expect some kind of settlement as things like this generally don’t go well if they make it to a trial. GM would be wise to get this entire situation dealt with and put to bed once and for all.
I have a 2017 Colorado Diesel that has been in the shop for a transfer case issue 4 times. Just recently the seals blew when the transmission started shaking & slipping.
There are other major issues under the carriage as well.
Is there anywhere I can turn now as I am being asked to pay $7k for new transmission and seriously thinking about selling th vehicle. However, if I sell it then I do not get to participate in the legal case. (I think)
Any insight into what I should consider doing?
i have an 8 speed transmission in my 2017 Chevy Silverado. they tried the torque converter fix with flushing lines and filters but after spending that money it was still not a fix due to the faulty transmission. Now I am out even more. Does the lawsuit include just anyone and how can you file a claim on this for maybe compensation?
Tammy- I am in the same boat. Now I am fighting Statute of Limitation Laws. I spoke to attorneys that filed class action, they cannot take on any more plaintiffs per the judge’s ruling. At this point I am not sure if a group can start another class action case. T
Bought my 2019 in November 21 and by August 22 it is in the shop with an indefinite back order on the Torque Converter. Time without a truck and money spent on a rental… Extended warranty has covered ten days on the Rental and I am still waiting..!… Ughhhhh!..
Joe, did they ever get it fixed? I have 2019 that’s about to go to the dealership, because of a shuddering and shifting issue….smh
Is there a way to get involved with this lawsuit a the present time. My friends truck has been a dealer shop for several weeks waiting on repairs.
I am very interedte in participating in a law suit. I had a 2016 Silverado for 4 months, had many problems with trans. I traded it for a new canyon…same issues. No luck with dealer. Was screwed over bid time. They are liers. My brother just had to put out over $5,000.00 for a new trans in 2015 sierra. Dealers need to be stop being crooks.
My 2020 Colorado has the same problem. They did the fluid change about 2 years ago and now it’s coming back. Yes, I said the 2020 as well. I bought my truck brand new. What a disappointment!
I just bought a 2022 Chevy Equinox and it was just in the shop for this very thing. My vehicle is a 4 speed with turbo. It was shifting hard, seemed to not go into gear, and reved up. They replaced plates in the transmission. I literally had the car for 2 weeks and 3 days before it went in. I just bought the car the beginning of May brand new with 18 miles. In the shop before I even got 450 miles on it.
Sorry not a 4 speed but 6 speed with turbo
2015 chevrolet 3500 34000 miles new transmission radiator and trans cooler plus labor the fluid looked like a grinder was used to mesh the gears there goes my trust chevy, cheap is not better
I just had to have my Transmission rebuilt for over $4,800.00 and of course had to have the Torque Converter replaced , Computer with all the silenoids , plus several other parts internally. My truck is a 2017 GMC Sierra Denali 2500 4X4 . I’m PRETTY PISSED!!!!!!!!
My 2017 Chevy Silverado is in the shop for the transmission.
Yep. My 2017 Chevrolet is also in the shop getting a new transmission. The cost was over 7k$.
We bought a new 2017 Chevrolet Silverado. We were never notified of a transmission problem. We owe one more payment. Last week, the truck started jumping out of gear and lunching. We put it in a repair facility. They called yesterday, said it needed a new transmission for the price of $6000
I’m hoping someone on this site directs me how to apply for this class action lawsuit.
I have a 2017 Silverado which has been in the shop several times over the last year. Replacement of the touch screen on the radio, replacement of the hood latch which did not allow me to use the remote start, replacement of the battery and a muffler leak. All these taken care of while waiting for a new transmission through my extended warranty. The original transmission was putting out delayed acceleration. After fluid change and being told that the truck had to learn my driving habits, I finally convinced them to take a look at the torque converter. Low and behold, they came back and told me the torque converter, torque converter pump, and the TCM were all bad. So a replacement of the tranny was scheduled. This replacement was a reman. from a third party. This tranny lasted 2 weeks before I started experiencing the “chevy shake”. This tranny was far worse than the one they took out. Went back to dealer and told them. It has now been 3 weeks and the dealer hasn’t heard a thing from the third party which supplied the 2nd tranny. This is getting real old!!!!!
I own a 2016 Sierra LT bought new for over $48k in 2016 just had to replace entire transmission after it was in the shop at 80k and came apart at 98k miles. Only used as highway driver. GM offered me $609 for the $5500 replacement saying the amount offered was based on the mileage of the truck. Mine is a 6L80 and there needs to be a class action suit on this issue. GM knows these 6 and 8 speeds are a problem.
My 2017 Silverado is in the shop now 81k miles. I also have the 6L80 and I agree GM knows there are issues and they should take care of this. I would love to join a class action over the 6 speed
I also have an 2017 Rado. Super shuttering at 84k miles is beyond my expectations of an 4×4 pick up. Charges are 5600.00. I’m willing to join a class action party
I also have a 2016 GMC Sierra been down 8 months now lost my job because I can’t afford to fix it. Then lost my home because I couldn’t get to work which resulted in losing my job so no Christmas for us this year. They can’t possibly think that this issue doesn’t affect our lives. When it was the only means of transportation! What do you do from here. I desperately need help!
I am ready and willing to join any kind of lawsuit. Hell I’m starving here!
I had to replace my 6L80
How do we join the lawsuit? I have a 2019 Chevy Silverado and had to pay 4k to replace the transmission out of pocket because my warranty only covered up to 75k and I was at 77k miles. Please let me know Thanks!
I have a 2015 Yukon Denali XL that I just purchased in September and then November was already in the shop for transmission issues amongst other issues I bought this vehicle to make sure my grandbabies four and one year would be safe traveling with Grammy I also bought it to pull my camper and start living my retired life now I can’t go anywhere! is there anyway I can help by submitting records of all the things my mechanic has done to try to fix this transmission issue ?
I have a 2017 GMC Sierra 3/4 Ton Pick up that has been shifting erratically,I understand there is an ongoing problem with the 6&8 speed transmissions.i also found out there has been a Class Action Suit against GMC, how do I get my name added to the list?
i have issues with my 2017 sierra with delay acceleration and aggressive shifting into gear. i went today on the dealer and they said operates as it should at this time. but is not working property my transmission
My son bought 2017 Tahoe in 2018 it has . 83000 miles on it now .the transmission is junk has anyone filed a law suit on GM over this transmission. It is a 6L80 it will cost around 4800.00 to fix it. I called gm they said nothing to help. Tuff sh— more less. We would appreciate any help you could give us with this matter. Thanks
My 2019 trail boss just quit on me and won’t pull they are saying at dealer that it’s out of warranty by 10,000 milles. Do you know what firm is handling to he suit.
How do I get myself involved with this Class Action!!!??
I have a 2015 Cadillac Escalade and my transmission is failing. Just found out today starts at $4,,700 ! I can’t afford to get that done …. Or trade in! This is wrong! Faulty equipment is their responsibility. Please include me in this law suit please!!!
I have a 2015 GMC Sierra , the transmission went out the other day at 126000 miles so I had it replaced with what they say is a new Gmail transmission. I left with it And 521 miles later I sitting on the the side of the road with another a new transmission gone . This is bull and Gmail needs to step up to the fact they have a problem. How do I get involved with the law suit ? I have several friends that are having the same problem.
GM has a real problem with six speed and eight speed transmission for 2016 forward as well and condesors for AC units. Shame on them that is not the GM that put them out front. GM best look back to there customers and the Dealers that made em Great. Scap the EM 100% by 2035 or y’a;ll will all unemploys. You transmission are far from being up to the General Motors standards. I have drove GM since 1960 and a GM family dealership since 1944. Best get in gear and back off EV dam quick
I have a 2018 chevrolet Silverado and the transmission is not working ..I have already spent money on it and it still is not fixed now they are telling me it will be 3500 to get it fix.
GMC/Chevy should just do a recall on these vehicles they are dangerous the hard shift and bucking is mentally, physically and even emotionally hard to deal with. So many times we complained to no avail. Had transmission fluid changed, sensors changed looked for any service bulletins that our dealership wouldn’t even tell us about. Our dealership told us recently sorry your now out of warranty have someone else do the transmission repair. Really no more GMCs for us.
Help, I have a 2019 Chevy Silverado pickup. Transmission as go bad. How do I get the new Transmission recorded on my VIN, and how can I get apart of a class action suit?
I have a 2017 colorado have had it two years
35k on it. It’s been in the shop 3 times for jerk shifting. Slow acceleration. Jerk shifting deceleration, loud shifting from dr to rev etc etc. Dealer won’t do anything bout it says its normal, I’m sure everyone else gets this bs response till they don’t cover it anymore than there’s a problem.
2016 Silverado when slowing down and then accelerating it jerks . Driving from 60-80 center console stats shaking bad
WELL, GM MAY NOT WANT TO FIX THE PROBLEM BUT WHEN SOMEONE DIES FROM CAUSES WITH TRANSMISSION IT MAY COST THEM MORE. THE MORE PEOPLE HEAR ABOUT GM’S PRODUCT THE LESS MONEY THEY MAKE.
Any way to jump in on the law suit? I have a 2019 Chevy Silverado. Transmission went out.
2015 Chevy Silverado transmission went out. Had to hive it rebuilt. Transmission mechanic stated it was a faulty transmission.
2018 GMC Sierra, 8 speed transmission. 72k miles, dead. This after bringing it to the dealer a dozen times under warranty. Had the, “special” flush done for 600.00 bucks, temp fix a few thousand miles. Now it has gone out. No choice but to have fixed and stuck up the 6k bill. I’m done with GM. NEVER AGAIN! Been diving GM for 40 years, the hell with Barra and their screwing up with this pathetic transmission. If the courts don’t do justice someone will!
Yukon XL that just turned 6 years old with its 2nd complete transmission failure. Failure occurred in mid rush hour traffic.
I have a 2016 Silverado, Transmission failed on way back from vacation. Stranded 800 miles from home. Had to have it towed to closest dealer, rent a car to get home and wait. THey just called. $6255 to fix. Torque converter shredded metal all into transmission, all needs to be replaced.
My 2016 Chevrolet Tahoe has 120,000 miles. Just found out today my transmission needs replaced. WTH?!!! It had a slight hesitation while I was accelerating. I took it in to the shop thinking I needed new spark plugs or a dirty fuel filter. NOPE. I need a TRANSMISSION. I’m looking at $3-5,000 😫😡
I have a 2018 GMC Sierra it was taken to the dealer on 9/13 /2022. I am experiencing delayed acceleration and shuddering problems. The truck only has 38,000 miles. I am waiting on the dealer to call me with the diagnostics.
2017 gmc Sierra has transmission shift lurching and hard downshift issues at 39000 miles. Bought new and has the 8 speed transmission. Dealer states fluid change at my 400.00 expense. Super BAD product accountability by GM.
I have a 2015 chev suburban and this just happened to me, the torque converter blew along with the transmission pump and metal broke through the transmission. How do I get on this lawsuit
I have a 2015 chev suburban and this just happened to me, the torque converter blew along with the transmission pump and metal broke through the transmission. How do I get on this lawsuit
I have a 2015 Chevy Tahoe. I’ve changed my transmission in 2020. It’s gone out again.
2015 silverado and it is in the shop for the 4th trans replacement… This last trans lasted 5k miles.
I’m in the same boat with my 2018 Chevy Silverado. Warranty ran out 3 months ago. At 84,000 miles, I’ve had 2 mechanics look at my truck and tell me it needs a new transmission. All the mechanics I have talked to in my area say they replace about 4-5 transmissions a month on 2016-2018 GM trucks. The mechanics say the issue has been addressed within the new replacement transmissions, but I’ll still be out $5K-$6K for the replacement and installation. I haven’t yet made my decision to replace the transmission or get rid of the truck.
I also had my 6L80 transmission go bad on my 2015 GMC Sierra 1500 at 889350 miles, It’s been sitting for months because I don’t have the money to fix it. Not happy at all. I have owned GM products all my life this makes me sick. Come on GM take care of the people who have taken care of you.
I have a Chevrolet 1500 Z71 2016 Silverado and been experiencing jerking for a year or so. Done everything to try and fix it with now finding out it’s my tork converter. A experience problem for everyone that’s have the same issues. Hopefully we can get the help we need to fox this problem for all of us.
My 2017 GMC Denali Seirra is have trap problems jerking and shuddering and down shifting slow and hard to stop. How can I get this problem fixed if gm doesn’t have a fix or replacement??
2017 Chevy Colorado z71
Shudders and shakes, like I’m going over rumble strips. I am going to the dealership tomorrow… it is out of warranty by a couple months.
I have not joined the class action, but would like to.
I have a 2017 Silverado High Country that has the 8 speed transmission. After 4 attempts at patching the issue, finally the warranty company I bought at the initial sale replaced the transmission with a reman. It’s only been a couple of weeks but the initial shift is just like before but the remaining shifting has been good so far. But, reading the above post about the reman, I’m not so positive about it anymore.
2017 Yukon Denali – transmission started the shuddering at around 80,000 miles – did a transmission flush and got the metal shavings out. Now at just about 100,000 miles transmission has been replaced and still waiting on other parts to come in. It has been sitting at the dealership since November 2022. Not happy at all….
I have a 2018 gmc1500slt with 41k, I bought it at the end of 2018 new . They did the flush on it saying the fluid heated up and created bubbles in the fluid that made the truck shudder so the flush was to fix it .
took it back after a few weeks cuz shift jerking and rough . they gave me a rental and ( hope I’m not being charged for it) cuz its been over 30 days , they don’t know when it will be fixed because the part they need is on back order and it still needs to be made, is what the service department is telling me. I feel like the part (valve-body) won’t fix it and it will be something else. luckily I’m under the motor trend warranty..
i bought a 2018 sierra elevation 1500 with a 6 speed transmission and it has done the same thing since i drove it off the lot. i was told it was a normal thing. now today actually driving home it was jerking and missing quite bad. the worst it has ever been. called the dealership and have an appointment booked for tomorrow im sitting at just over 138,000 kms. curious as to why the 6 speed transmissions are not included in this. i know of others having the same issue.
I have a 2017 Silverado 1500 that has had transmission issues since I bought new.
I have had shifting problems. I have had the transmission flushed, was not contacted by GM they were flushing the transmissions,
found out about this on the internet. Now there is a shutter in my truck and the RPM gauge is going up and down at cruising speed.
It is looking like iI am about to pay for a torque converter replacement.
My 2016 Chevy Silverado has the same transmission problems as everyone else. It’s at the garage to be fixed . It shudders and vibrates. It’s so bad it shifts hard . I’m on a fixed income and I think GM should be fixing this. I’m not buying anymore GM vehicles. This is and expense I can’t really afford.
my 2018 Silverado its been tranny problems all the way still tranny Jerks hard enough to cause neck injury
The problem didn’t start with 2015’s. I have a 2014 Chevy Silverado that has been slipping and jerking for several years now. it finally went out and I can’t get a rebuilt transmission for under 4500. The truck only has 145K miles so way too soon to have transmission problems. I talked to a repair shop that does transmissions and he said the problem is the cheap torque converter Chevy used which slowly destroys the otherwise good transmissions. Regardless, my truck is a paperweight until I shell out 5K to put in a new transmission.
My 2015 6 speed does the same thing . 80000.miles Never had transmission issues my whole life. Went thru several gm with 200000 plus. Gm is slacking and should go good. was told don’t tinker with swap it out. Don’t waste your time with try this try that. Doesn’t fix it. Thinking new truck.