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2021 gm 8 speed transmission problems

RDG FOCUSED ON FORD’S 10-SPEED TRANSMISSION - Rex Diff and

The issues with the 8-speed GM transmission are two-fold. First, some customers report the transmission shuddering frequently. Secondly, the shifts are very harsh between first to second, and then.. Also, a TSB (Technical Service Bulletin) addresses torque converter clutch (TCC) shudder conditions for the 8-speed GM transmission. So a fluid flush or replacing the TCC could be the answer. It's currently unclear if the 2020 and 2021 Chevy Silverado 1500 models have the same problems GM 8 speed transmission problems- read this if you have one. Sat, 10/24/2020 - 3:10pm. metricman. 12 years. Last year my 2016 GMC Sierra had a terrible shuddering problem. When it first started it was very mild, almost like a wheel balance problem. One day though, it got so bad the truck was shuddering so bad that things were making noise in. Numerous class-action suits have been filed against GM over its 8L45E and 8L90 eight-speed automatic transmission. Plaintiffs claim the eight-speed automatic transmission will slip gears, shift.. You will find problems posted for every brand and model car and truck. My 2018 Canyon V6 4x4 SLT is one of my all time favorite vehicles, and the 8 speed transmission has been great, 22,000 miles, including 3000 miles of towing and loaded near max GVWR. Just enjoy it for now, hope you also got a good one

8-Speed GM Transmission Problems Fixed Via New TSB GM

  1. We've been watching the General Motors 8-speed transmission in the GMC Sierra 1500 and Chevy Silverado 1500, and in addition to several complaints about sudden shifts and hard jerks, there is a lawsuit pending.Now we hear for 2021 models, at least, GM has announced a Customer Satisfaction Program for some vehicles that involves replacing the transmission
  2. 2020 Silverado Transmission Problems: Hard Shifting Is Just the Start! April 8, 2021 by EZZ Harbid Hard shifting, sudden jerking, and trouble downshifting are several of the 2020 Silverado transmission problems that you may encounter when you drive a 2020 Chevrolet Silverado. Auto Repairs Are EXPENSIV
  3. In fact, GM was recently slapped with a class action lawsuit over the 8-speed gearbox. The plaintiffs assert the GM 8-speed transmission is defective, creating violent shakes, jerks, and a hard..
  4. Back in July, GM Authority brought you exclusive coverage of a transmission downgrade for the 2020 Silverado 1500 High Country 4WD Short Bed, with that particular model mating the 5.3L V8 L84..

Ten years before GM would have considered a transmission of it's capabilities to be a 3/4 ton or 1 ton transmission. Now we have the 8L90E with two OD gears, a deep 1st, and intended to tow up to 1x,xxx-lbs on a Max Tow equipped truck behind a 355-hp engine. GM learned it needed to beef up it's transmissions The 8-Speed GM Transmission The GM 8L90 and 8L45 transmissions were developed to replace earlier 6-speed automatic transmissions in General Motors rear wheel drive vehicles. The 8L90 was introduced in 2014 in vehicles like the Chevrolet Silverado / GMC Sierra pickups, the GMC Denali, the Corvette and Camaro, and several Cadillac applications 2016-2019 Cadillac CTS-V. The issues with the 8-speed GM transmission are two-fold. First, some customers report the transmission shuddering frequently. Secondly, the shifts are very harsh between first to second, and then second down to first, especially when accelerating and the transmission is upshifting or decelerating and the transmission.

RELATED: 2020 Chevrolet Colorado vs. 2020 Ford Ranger - Chevy Takes Another Loss. In the class-action, one consumer bought one of the affected vehicles. He said the transmission shifted from reverse to drive so forcefully that he almost went through the door of his garage September 7, 2020 — Toyota 8-speed transmission problems have caused a lawsuit that includes Toyota Highlander and Toyota Sienna vehicles equipped with direct shift 8AT transmissions. According. This problem could cause the vehicle to stall and may lead to electrical arcing, increasing the risk of fire. In the recall notice, GM states, The battery positive (B+) cable rings may have been manufactured with excessive glue. NHTSA Recall #19V837000 states that the 2020 GMC Sierra 1500 may be missing a pressure regulator on the fuel pump

April 27, 2020 — A GM transmission lawsuit alleges multiple Cadillac, Chevrolet and GMC models shake, jerk, shift hard, clunk and hesitate due to the 8L90 and 8L45 transmissions How is driving the 2020 Chevy Silverado 1500? Their 2020 Chevy Silverado 1500 is equipped with the 5.3-liter V8 engine. It's the more popular option even though the 6.2-liter engine with 420 hp is available. The 5.3-liter engine has 355 hp and 383 lb-ft of torque and is paired with a 10-speed automatic transmission

GM's Recent Transmission Defect: What it All Means. Brian Cline. June 23, 2019. You may have heard about the GM 8 Speed Transmission recall that was issued back in 2019. General Motors came under fire over an alleged defect in their 8-speed transmission. While the situation is ongoing, the series of events could very well compromise the GM image Specifically, the 2020 Silverado 1500 High Country 4WD Short Bed model with the 5.3L V8 L84 engine featured the ten-speed automatic transmission since the beginning of the model year. However, GM. UPDATE: I did some more research into the intermittent slip. I will have to simply live with it. There is no repair at this time. Apparently there are mul.. Islanderoffroad. Hi everyone. Recently got back into a Canyon after stupidly trading in my 16 Dmax on a Wrangler. I've got a 21 Canyon AT4 V6, 8 speed auto with an issue, though it seems to be different than the common shudder issue on the earlier 8 speed trucks. On a cold start, the first 1-2 shift of the day has a weird hesitation to it

The Chevy Silverado Struggles With Transmission Problem

Date: November, 2020 INFORMATION Subject: OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification Models: 2003-2021 GM Passenger Cars and Trucks Attention: This bulletin also applies to any of the above models that may be Export from North America vehicles. This bulletin has been revised to add the 2020-2021 Model Years So with all of that in mind, let's get to know the transmission a little bit better, with 11 things you need to know about Ford and GM's 10-Speed Transmission. 1. Ratio Spread. Despite its relatively wide spread between 1st and 10th gear, the overall span for the 10-speed transmission is hardly the widest out there GM's AF50 8-Speed Transmission Fluid Level and Condition Check. July 2, 2018. 14,347 Views. Take a look at what you need to do to check the fluid on GM's AF50 8-speed. 2020 A Closer Look at the Lexus 8-Speed Transmission. Mike Brown. 3,385 Views. Street Smart - March. General Motors has issued several t echnical service bulletins pertaining to torque converter clutch shudder issues in two of their 8-Speed transmis - sions; 8L45 & the 8L90. This problem currently affects 11 different models across 3 different OEM manufacturers between the model years 2015 and 2019. GM's solution to this problem is lengthy &

The linear velocity of a point on the rim of the wheel is closest to: A) 1.5 m/s B) 3.0 m/s C) 4.5 m/s D) 6.0 m/s E) 7.5 m/s 2. a. from kinematics. a = R . f. 0. t Recall the definition of linear acceleration a . • Angular velocity is the rate of change of angular position. Consulting a table of moments of inertia, we find I = ½MR2. The angular velocity must be converted to rad/s Ω = 100/3. new vehicle equipped with a GM 9T65 transmission (RPO M3Vand M3W), if a problem occurs, by directing the technician to replace the transmission assembly instead of repairing it in most cases, if certain checks are made and guidelines followed. 1. Only applies to vehicles sold and serviced in the U.S. 2. Only applies to vehicles less than 18. General Motors is aware of these issues and has issued thirteen technical service bulletins on the topic, but to no avail. These transmission problems have been found in both the GM 8L90 and 8L45 eight-speed transmissions and across several GM makes and models. The affected vehicles are as follows: 2015-2019 Chevrolet Silverad Despite numerous complaints on the 8-speed unit. The 2020 GMC Sierra 1500 has quite a number of engine choices going for it, ranging from the lower displacement 2.7-liter turbo, all the way up to.

C8 Corvette Transmission Software Problem Will Be Solved by OTA Update. Following the TSB from September 2020 concerning broken valve springs, General Motors has acknowledged another problem with. A class action lawsuit was recently filed in response to transmission defects in GM vehicles that can cause shaking, jerking while shifting, shifting hard, clunks and hesitations due to the 8L90 and 8L45 transmissions. The vehicles included in the class action are: - 2015-2017 Cadillac Escalade - 2015-2017 Cadillac Escalade ES I have a 2019 GMC Sierra 6.2L Denali, 10 speed transmission, with 36K miles on the truck. I have recently noticed when the truck decelerates more than 20 mph, and then if I accelerate, I hear a single bang sound coming from the transmission as soon as I start to accelerate. It is like the transmi.. GM's Severe Transmission Defects Owners of 2015-2017 GMC Canyons and Chevrolet Colorados have complained that they have experienced transmission issues when downshifting or accelerating. The most commonly reported issue is shuddering when the truck accelerates and sudden jerking when downshifting gears when driving up an incline 2020 Chevy 2500 Duramax Transmission Failure. Jump to Latest Follow Hey Everyone! Against my better judgement of not purchasing first year model of anything with major changes, I bought a new 2020 Chevy 2500 HD with Allison 10 speed about a month ago. Loving it except for the fact that 1800 miles in, the truck would not move

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June 29, 2020. A new replacement program for the 9T65 9-speed automatic transmission (RPO M3V, M3W) (Fig.1) on 2018-2020 Enclave, Traverse; 2019-2020 Blazer; 2020 Acadia, XT5, and XT6 models is being piloted in the U.S. beginning July 1, 2020. The program is designed to reduce the number of days needed to complete vehicle repairs As with several other transmissions, Ford and GM have collaborated on the development of a series of 8 and 9 speed front wheel drive transmissions. In 2019, Ford introduced the front wheel drive 8 speed which is very similar to the 9T GM front wheel drive series. All the 8F series units use Ford Mercon® U LV Certain 2016 model year Cadillac CT6, Chevrolet Silverado LD and GMC Sierra LD vehicles, equipped with an 8-Speed Automatic Transmission, may have a condition in which the 2-3-4-6-8 Clutch Piston is out of specification. Parts exhibited a crack condition as cast after machining. As a result the vehicle could exhibit 1-2 upshift slipping or a.

By Brian T. Murray, Esq. If you are driving one of the hundreds of thousands of vehicles recently manufactured by General Motors, LLC (GM) you may be at risk due to a dangerously defective transmission. Francis, et al v. General Motors, LLC, a class action recently filed in the United States District Court for the Eastern District of Michigan, alleges that the automotive giant was aware. Allow the grill to cool and remove the foil. While live rock creates territories for your cichlids to rule, it also can raise the Ph and the hardness of the fish tankâ s water. As with similar stones, this can easily be offset by regular water changes and the use of driftwood in the aquarium. Young recommends simply adding ½ a teaspoon of baking soda to a gallon of purified water and shaking. Chevrolet transmission problems can be caused by something as simple as low transmission fluid or dirty filter and even a dead battery. They can also be caused by more serious issues such as internal hydraulic leaks, faulty valve body, failed clutch pack, torque converter, and other problems requiring a complete transmission overhaul or replacement

Purchased new chevy Colorado 4x4 extended cab with 3. 6-liter v6, transmission 8-speed model 8l45. Transmission developed shudder during light throttle acceleration between 30 and 70 mph. Shudder is cyclic lasting 4 - 12 seconds, reaccurring 45 - 90 seconds. Shudder feels similiar to driving over mild rumble strips or rough pavement Follow me on Instagram: https://www.instagram.com/mattys.garageAtlis Website:https://www.atlismotorvehicles.com/xt-truckLed Light partner LASFIT:Last fit We.. GM's 8-Speed Transmissions Subject to Lawsuit. by Aryn Plax. Feb 27, 2020. General Motors' 8L45 and 8L90 automatic transmissions installed in some 2015-2019 Chevrolet, Cadillac and GMC vehicles are alleged to suffer from defects such as hard shifting, shaking, jerking, shuddering and hesitating. In the proposed class action lawsuit, which. 36 comments Robert June 29, 2019 at 10:58 am Reply. Transmission down shifts hard!! Richard August 6, 2019 at 5:02 pm Reply. I have been to the Chevy dealer four times for this issue. Every time.

GM 8L45 and 8L90 automatic transmissions allegedly shudder, jerk, hesitate and shift hard. December 24, 2018 — A General Motors 8-speed transmission lawsuit alleges fixes offered by the. Two 2020 Chevy Silverado 1500 Trail Boss Z71 4x4 pickups with only one major difference between them. One is an 8-speed, the other a 10-speed Free Case Review. Contact Now. GM Transmission Problems. Chevrolet, GMC and Cadillac vehicle owners have reported transmission problems and defects.. Hard Shift - Vibration - Hesitation - Shaking are common problems with these vehicles.. August 2019 - GM Vehicle owners report the eight-speed automatic transmission found in several rear-wheel-drive Chevrolet, Cadillac and GMC models.

GM, which declined to comment, has so far released 13 technical service bulletins about eight-speed automatic transmission problems. However, none of them has provided an absolute remedy Ford felt that the GM 9-speed did not improve enough fuel economy over existing 8-speed units, which has undoubtedly been seen with GM automobiles using the new 9-speed. For instance, the 2017 Chevy Malibu with the new 9-speed transmission gained only 1 mpg on the highway over the previous model's 8-speed

GM 8 speed transmission problems- read this if you have

Among others in the GM line, the Camaro ZL1, Chevy Tahoe, Cadillac Escalade, and Yukon Denali are built with the 10-speed transmission. On the Ford side, the 10-speed can be found in the F-150, Mustang, Expedition, Navigator and Ranger. Further integrations will increasingly become evident as 2019 closes and 2020 looms on the horizon The wife currently has a '19 Lincoln Nautilus with the 2.7 and 8 speed trans and, crossing 9k miles, all seems good. Actually the Nautilus is a good car - excellent ride with good fuel economy. I can't imagine I'm doing something magical; 5k oil changes and 89-91 octane fuel and just drive the things The 8L90 is an eight-speed automatic transmission built by General Motors.It is designed for use in longitudinal engine applications either attached to the front-located engine with a standard bell housing or in the rear of the car adjacent to the differential (as in the Corvette). It is a hydraulic (hydramatic) design. GM also produces a similar design with the smaller 8L45

GM Eight-Speed Transmission Lawsuit Loses Steam GM Authorit

GM 8-Speed 8L90 M5U Transmission Info, Specs, Wiki | GMBuick Through The Years | GM Authority

8 Speed Transmission Issues still prevalent in 2020

GM to replace some 8-speed transmissions in Sierra, Silverad

2020 Silverado Transmission Problems ️ Hard Shifting Is

Incorrect transmission fluid type, which is a well known and documented problem with all GM vehicles that use this 8-speed transmission. There is a Technical Service Bulletin (TSB 18-NA-355), which describes that replacing factory-installed transmission fluid with Mobil 1 Synthetic LV ATF HP fluid solves the issue 2015 to 2020 Cadillac Escalade; 2014 to 2019 Chevrolet Silverado I have a 2019 silverado L84 engine 8 speed transmission and at 65 mph it shakes/and or vibrates and gets worse when it shifts or changes engine modes. the dealer changed the fluid and changed the torque converter and now said that it was normal. This has been a GM problem. One of the first stories I worked on involved the Chevy Silverado, and the biggest issue I found pertained to the GM 8-speed transmission. But the issue is much bigger than just Silverado. In fact, the Hydra-Matic 8L90 and 8L45 transmissions at the root of the problem have been used in 15 different GM products since 2014 - including. The old GM transmission fluid was to be swapped out for Mobil 1's new synthetic LV ATR HP fluid, which seems to have solved many of the issues. Upgrades With ATI Performance Products Even with the shudder issue solved, the stock eight-speed GM transmission can be improved with performance upgrades from ATI for serious driving enthusiasts When diagnosing a shudder vibration condition on some 2016-2018 Silverado, Sierra; 2016-2020 Tahoe, Suburban, Yukon; 2019-2020 Silverado 1500 and Sierra 1500 models equipped with 5.3L V8 engine (RPO L82, L83, L84) and 6L80 6-speed transmission (RPO MYC), it's critical to determine the source of the vibration in order to make the proper repairs

The GM 8-Speed Transmission Needs To Go Away ASAP GM

It only has 39,000 miles. Over the last month or so I have noticed some odd things about the transmission that I will outline below: - When slowing down and shifting from 2nd to 1st gear there is a noticeable bump right before coming to a stop. It feels like my truck is getting bumped from behind. If I come to a quicker stop it's harder to. Like the GMC Sierra, the 8-speed transmission is the main issue owners are seeing with the half-ton truck. Looking at the 2017 model year specifically, the majority of the complaints by far are about the transmission 2020 Chevy Silverado 1500 5.3L or 6.2L V8? What is the best Chevy Silverado V8? Can the 5.3-liter V8 hold its own against the big 6.2-liter V8 Some 2018-2019 ATS, CTS, CT6, Corvette; 2018-2020 Express; 2018-2021 Camaro, Colorado, Silverado, Canyon, Savana, Sierra; and 2021 CT4 models equipped with the 8L45 or 8L90 8-speed automatic transmission (RPO M5T, M5N, M5U, M5X, MQD, MQE) may have a delayed engagement condition when the transmission is shifted from Park to Reverse or Park to Drive after the vehicle has been sitting with the.

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2020 GMC Sierra 1500 Gets Transmission - GM Authorit

The Aisin AW F8FXX series is the world's first 8-speed automatic transmission designed for use in transverse engine applications. Aisin designed the transmission to package in the same space as preceding 6-speed designs, while increasing the total gear spread and reducing gear spacing. It is also called the TG-81SC (Volvo), AF50-8 (Opel/Vauxhall), AWF8F45 (Cadillac), and AQ450 (Volkswagen Group) GM stated nothing serious. Later on transmission died, completely breaking down in busy intersection. $4500+ for a new GM transmission. Then shortly after I had to deal with oil consumption issues. Grrrrrr. CBC has done news report on Chevy transmissions as a known issue, Carguru website and other forums list Chevy transmission notorious for. GM has admitted as much.....in the class action court cases they have actually argued it is not a defect, just normal performance for that transmission. That was the case for my 2016 CT6. My 2019 CT6 (same 3.0TT engine but with the newer 10 speed) is a world of difference in that regard

8 speed transmission gear problems - GM-Trucks

My 2019, 1500 silverado has the problem with the 8 Speed transmission, where the first shift of the day form 1st. to 2nd. it hesitates. the second problem is the truck twice has not started. it has keyless entry. It will crack over but will not fire. keep trying and then it start. I have had it to the dealer 4 time and they haven't found nothing U880E First 8-Speed Front Wheel Drive of It's Kind. This Aisin series front-wheel-drive, eight-speed automatic transmission is the first eight-speed front-wheel-drive of its kind and referred to as the AWF8F35/40/45/50. It's also referred to as GA8F22AW by BMW, AF50-8 by GM, U880E by Lexus/Toyota and TG-81SC by Volvo to name a few The ZF 8-speed is currently backing up the 6.4-liter HEMI V8. The Ram 68RFE is backing up a standard-output 6.7-liter Cummins I6, and the Aisin continues to serve with the high-output 6.7-liter. Investigation into GM transmission issues continues. Investigation into GM transmission issues continues

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GM 8 Speed Transmissions Advanced Transmission Cente

Nov 9th 2020 at 9:16AM. 3 Comments. DETROIT — General Motors is recalling more than 217,000 cars and SUVs in the U.S. and Canada because transmission oil can leak, causing them to stop moving or. 2020 Chevy Silverado 2500 2020 Ford F-Series Super Duty 2020 Mazda CX-9 2020 Hyundai Sonata 2020 Toyota 4Runner Tesla Model 3 SUVs for transmission problems I have a 1995 Chevy Silverado with a V8 motor my transmission is a 4L 60e or 4L60E I had to replace my transmission from a got one out of wrecking yard the problem is when I put it in first gear and shifts gears then I take off being first and before the shift into 2nd it bogs down and back stop what's causing tha

TSB Seems To Fix 8-Speed Automatic GM Transmission Problem

General Motors is recalling 350,371 full-sized pickup trucks at risk of electrical problems and stalling. The recall involves certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 models There are a lot of threads with people having problems with the 8-speed. That said the 6.2L is a hell of a motor, and makes great power. But you have to get the 8-speed to get it. I was going to go with a 6.2L truck with max trailering optin my self. But it just fell a little short of my needs. I ended up getting a 2500HD 6.0L Z71 4x4 CC I previously owned a 2000 Silverado Z71, a 2007 Sierra Z71, and a 2015 LTZ all with 5.3 and 6L80 transmission. I got 130 K + out of my first two trucks without problems. The performance difference is unimaginable. The new generation of the 5.3 with the 8 speed and 3.42 gears will pull a 22 foot bay boat without you even knowing it is there 2020 Chevrolet Corvette C8 Fast Quirks and Facts. GM engineers lowered the crankshaft by an inch to help lower the center of gravity and improve handling. Tremec transmission learns your pattern. GM faces possible class action lawsuit over 8-speed transmission none of which have resolved the problem. GM declined to comment on the lawsuit. 2020 Chevrolet Silverado 1500 MSRP: $28,500.

These are the GM Vehicles You Need to Avoid if You Don't

2020 Ram 3500 Tradesman. Image Courtesy of FCA. According to ZF, the new gearbox is slated for use in distribution trucks, refuse management, construction and utility applications, school buses, and heavy-duty pickup trucks among others. The 8-speed box is rated for vehicles up to 57,000 lbs, and can handle up to 1,000 lb.-ft. of engine torque The 8L90E is an 8 speed automatic transmission developed by General Motors and introduced for the 2015 Model year. It is currently phasing out the 6L80/6L90 transmissions (although it hasn't done its all the way yet. Structurally, the 8L90 is similar to the 8L45, except that it is made to handle more power and torque. It is an incredibly advanced transmission and has the technology to. 2020ToyHigh said: Just bought a 2020 Highlander Platinum---now has about 400 miles. When I'm cruising about 40 mph, let off the gas and decelerate, then give a slight bit of gas, I feel a bump in the drive train. It's more like slop in the transmission. If you've ever had an old vehicle with a bad u-joint, it almost feels like that In terms of transmission, these were the most problematic years that the Ram 1500 experienced. Keep in mind, that these were just transmission issues and the vehicles may have had other problems overall. The 2014 Ram for instance was known to have several problems in addition to the transmission. 2014 Ram 150

Toyota 8-Speed Transmission Problems Lead To Lawsuit

From 2007 through 2009, the engine problems continued to plague Chevy and the sister vehicle, the GMC Sierra, with the 5.3-liter V8 engine. You couldn't get away from it, whether it's the oil pressure problem, engine knock, or excessive oil consumption. Then in 2010, Chevy got a handle on it and complaints became fewer. 2014 Silverados to No The 2018 Chevrolet Colorado has 35 problems reported for shudder, vibration. Average repair cost is $0 at 8,750 miles. (Page 1 of 2 Jul 29, 2019. Greg PajoCar and Driver. The new C8 Corvette is the first generation of the Corvette that will be automatic-only. Chevy said the car didn't need a manual transmission because the C8. Chevy EcoTec3 6.2L Engine Problems While the Gen IV Vortec engine line is still in production today, Chevy launched the new EcoTec3 engine line as the successor or Gen V to the Vortec in 2014. The 6.2L EcoTec3 is the small-block V8 that powers the majority of Chevy's performance vehicles, such as the Corvette C7's and Camaro SS vehicles The all-new Allison 10-speed 10L1000 automatic transmission (RPO MGM, MGU) available on 2020 Silverado HD and Sierra HD models equipped with the 6.6L Duramax diesel engine combines enhanced performance, fuel economy, and operational flexibility with an industry-leading reputation for reliability

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2019 chevy silverado, 5. 3l with 8-speed transmission. Experienced intermittent transmission shudder at 32 - 44 mph. Vehicle serviced per gm ts bulletin to drain and flush transmission, replace defective fluid with atf mobile 1 synthetic. This was done twice and problem got worse 2017 Chevrolet Silverado 1500 4dr Crew Cab 5.5ft bed. 355-horsepower 5.3L V8 8-speed shiftable automatic 4WD w/low range. 4526 mi. Transmission shift logic is inconsistent for the 1-2 gear shift. Sometimes very soft, sometimes very hard. 6820 mi. Shifting into and out of 1st gear is inconsistent as per last dealer visit Chevy Silverado 2.7L / 5.3L / 6.2L 8-Speed 2020, Automatic Transmission Input Shaft by Transtar Industries®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced.. Nov 11, 2019. DW Burnett. For the C8 Corvette, Chevrolet abandoned the traditional manual and torque-converter automatic for a new, eight-speed Tremec dual-clutch. And in our Performance Car of. 2015 Chevy Corvette Transmission Problems: Class Action Lawsuit . According to an article at CorvetteBlogger.com a class-action lawsuit has already been filed against GM over the alleged defects with its 8-Speed Automatic transmission. Other vehicles that are affected by this as well are the 2016-2019 Corvettes and the following