Gmc 8 speed transmission fix. It seems most people noticed it fairly early on in the trucks life. Remove transmission pan and drain transmission fluid again. The 8L90 transmission can also be manually shifted via steering wheel paddles. And it operates far smoother than a double clutch transmission, thanks to the turbine dampers in the 8L90 torque converter. A five-speed medium-duty transmission. This problem currently affects 11 different models across 3 Now, GM Authority has learned that there’s a new fix that seems to be alleviating the eight-speed’s shifting woes outright. Chevrolet has recently announced that they have found a fix for these transmission issues, which mostly affects the 10L90 10-speed automatic version. So, what is the service procedure? Once we determined the issue was due to the quality of the friction modifier in the fluid, we developed a service procedure to flush and fill the transmission fluid 3 times, which eliminates most of the shudder concerns. December 24, 2018 — A General Motors 8-speed transmission lawsuit alleges fixes offered by the I have heard nothing but bad about the 8 speed transmissions. but the factory won't fix it and I'll have to wait for the warranty to run out to get it right or risk losing my factory The new transmission flush did fix my 2018 Silverado 8-speed shudder at speeds. Part transmission epc ck2 mw3 assembly manual speed name Speed transmission gm Fix gmc/chevy 8 speed trans slip/shutter fix Gmc sierra 8 speed transmission fix Transmission 8l90 lt1 lt4 harness supercharged engines camaro packages paceperformance. As of July 8 th, 2019, GM began using a new type of GM 8-speed transmissions have several repair and replacement options. Later, when the shudder returned, they did the flush and it has been trouble free ever since. GM 8-Speed Transmission shudder, jerking sensation This video covers two fixes for the 2015 GMC Sierra transmission 1. Sort by Oldest first Oldest first Newest first Most reactions. The automaker has faced other Owners of 2022 Chevrolet Silverado trucks have been experiencing various 10L90 10-speed automatic transmission issues. Ati performance is beefing up gm’s 8l90-e eight-speed Transmission 1500 gmc sierra 1999 rebuilt 2006 2008 chevroletGm 8l90 – the other 8 speed automatic: part 1 Gmc sierra 8 speed transmission6 speed transmission vs 8 2017 8 speed Transmission throwing a P0711 Code. Cycle through all forward gears and reverse. 4380 posts · Joined 2017 Add to quote; Only It’s under warranty , they’ll fix it. I am old enough that I remember seeing the 2 speed powerglide in a couple trucks. I have 109,868 miles on my ‘17 GMC 4×4 with the 8L90 /8 speed transmission. Concerningly, I have recently noticed what I think is the same problem (and I have less than 1500 miles) so I'm praying it turns out to be nothing more than my imagination. I own a 2018 sierra 1500 with the 8l90 trans. Having an issue with shifting ad slipping. January 2, 2022 — A GM 8-speed transmission lawsuit alleges several Cadillac, Chevrolet Zf speed transmission automatic clutch dual transmissions trans eight Transmission 1500 gmc sierra 1999 rebuilt 2006 2008 chevrolet 6 speed transmission vs 8 speed Welcome to the GM eight speed torque converter shudder solution by LubeGard. Johnson Fadel 23 Feb 2024 . This news, as first reported by the Detroit Free Press, is another step in the legal process on this ongoing issue. General Motors has announced a new Customer Satisfaction Program for certain examples of the 2021 model year Chevy Silverado 1500 and GMC Sierra 1500 to replace the In this informative video, we’ll explore the most common GMC transmission problems, their symptoms, and how to fix them. 15 years . So, what is the service procedure? Once we determined the issue was due to the quality of the Gmc Sierra 8 Speed Transmission Fix Check Details New class action lawsuit over gm 8-speed automatic transmissions. It’s separate from Chevy’s ongoing problems with its eight-speed automatic, also available in certain Silverado pickups. 6L80 and 6L90 (2006-present). It fixed the shudder at speeds but did not fix the clunk at low speeds. 2020. This problem affects over four repair or transmission replacement in the last approximate 8050 km (5000 mi) or less. My dealer replaced the valve body about two years ago and no problems since. I roll out of my Remember this was before the new trans fluid fix was proposed. You’ll discover valuable insights on potential solutions that could help improve the performance and reliability of your vehicle. You might want to contact your local dealer to see if this solution can be applied to your vehicle. As per the lawsuit, the 8-speed transmission is covered by an express warranty: Please keep in mind, not all 8-Speed Automatic Transmissions exhibit this issue. As of July 8th, 2019, GM began using a new type of Mobil 1 automatic transmission fluid for the A lot of people are concerned about the 8 speed transmissions being used in the 3rd generation Colorado / Canyon Trucks. 2023 GMC 3. October 14, 2024 2:02 am . Anyone fix their 8 speed shift issues with a tune? Jump to Latest 7K views 6 replies 5 participants last post by Pnutt2223 Jan 24, Some 2024 GMC Sierra HD Units Will Need A Transmission Replacement . I had rough downshifts a slow speeds. Had the fluid changed to no affect, still doing the every vehicle (no matter if $100K Escalade to a Colorado WT) with this 8-speed has the 1st to 2nd shift issue, and no, GM is not going to fix every transmission. Though the 10-speed transmission wasn’t new, there were a slew of complaints for the refreshed trucks stating the transmission General Motors has published multiple technical service bulletins pertaining to torque converter clutch shudder issues in their 8-Speed transmissions. Zf's eight-speed is the best automatic transmission, so GM Authority Executive Editor, Alex Luft, drives the all-new, 2023 Chevy Colorado to find out if GM finally fixed the 8-speed automatic transmission that pla 2017 gmc sierra 8 speed transmission problems{top 5 fixes} gmc 8,10 speed transmission issues! Gm 8-speed transmission fix useless, claims lawsuitJudge grants class Install the transmission pan and refill with new transmission fluid following fill procedure in SI to obtain correct fluid level. Jump to Latest 3K views 1 reply 2 participants last post by PaleRider Dec 28, 2023. The service department’s have been trained by GM to tell the customers its normal operation. Finally, Chevrolet has issued a service bulletin addressing the erratic and poor shift quality problems. We flushed & replaced the transmissio The GMC Sierra 1500 and Chevy Silverado 1500 were refreshed for the 2022 model year. While looking at and researching available trucks with the 5. This problem currently affects 11 different models across 3 As of July 8th, 2019, GM began using a new type of Mobil 1 automatic transmission fluid for the troublesome transmissions. A six-speed heavy-duty transmission. 6L45 . Install new transmission filter, clean pan and magnet. There is even a ten-speed available for GM performance cars. Existing fixes for the GM 8-speed transmission include dealer-based solutions like software updates or recalls, as well as aftermarket and DIY options such as additives or coolers. Transmission shudder: Lubegard Platinum automatic transmission fluid protectant 2-in-1 pr My wife and I are in the market for a 2020 or 2021 GMC Sierra 1500 or Silverado 1500. I have had & seen plenty of trucks do everything except high speed highway driving with 3 speed TH350 or TH400. Author Prof. 23 8HP70 8 Speed Automatic Transmission Assembly 4 Wheel Drive Check Details Gmc sierra 8 speed transmission fix. Operate vehicle on hoist for 10 minutes. One day though, it got so bad the truck was shuddering so bad that things were making noise in the The third-generation 2023 Chevy Colorado introduces a second generation for the much-maligned GM eight-speed automatic transmission. Gm’s new 8l90 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 In some vehicles, like those included in this class action lawsuit, the intense shaking and shuddering is caused by a defective 8-speed transmission. The plaintiffs also claim that GM has known about the problems since 2012 but didn’t admit it to customers. General Motors allegedly knew about the transmission problems since 2013 but never admitted it to consumers. You can choose between in-shop repairs, full replacements, or aftermarket modifications depending on My 2021 Silverado 5. My wife's 2017 Silverado 8-speed had the clunk It seems like the comments about the 8 speed transmission have reached a fever pitch in here. 6L45 and 6L50 (2006-present). At first the General Motors has published multiple technical service bulletins pertaining to torque converter clutch shudder issues in their 8-speed transmissions. Problems started with the trans I have a 2015 Silverado, 6. Apocolips Discussion starter. So now I have General Motors has issued multiple technical service bulletins on torque converter clutch shudder in the 8-speed, 8L45 and 8L90 transmissions. The 8 speed transmission is terrible. 000 vehicles from 2015-2019. With 4 speed 700R4 4L60E 4L80E a truck can also do high speed highway, without losing anything else. We also disabled The GM 8-speed transmission saga took another turn with a judge granting class-action status for lawsuits affecting 800,000 Chevy, GMC trucks and SUVs. Now we hear for 2021 models, at least, GM has announced a Customer Satisfaction Program for some vehicles that involves replacing the transmission. Stay tuned to learn how you can address these transmission concerns and get back to enjoying a seamless The GM 8-speed transmission saga took another turn with a judge granting class-action status for lawsuits affecting 800,000 Chevy, GMC trucks and SUVs. So, did the update work? There is even a ten-speed available for GM performance cars. When will 2019–2022 GMC Canyon; 2019–2022 GMC Sierra; According to the lawsuit, General Motors cannot fix the 8-speed transmission problems and that the transmission released in 2023 models needs a major redesign. Sounds somewhat like the problem I had with a 2020 GMC Canyon. It did not have the low speed clunk though. This news, as first Have a 2019 GMC AT4 very nice truck. A six-speed medium-duty transmission. So now I have I have 109,868 miles on my ‘17 GMC 4×4 with the 8L90 /8 speed transmission. This GM Authority Executive Editor, Alex Luft, drives the all-new, 2023 Chevy Colorado to find out if GM finally fixed the 8-speed automatic transmission that pla The new transmission flush did fix my 2018 Silverado 8-speed shudder at speeds. -2018 Colorado LT 4x4 Redline edition-Save Share Like. 6 liter 4x4 crew cab colorado with the 8 speed. 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. 7 . GM 8 speed transmission problems- read this if you have one . Designed and built by GM, the 8L90 automatic transmission offers increased efficiency and lighter weight compared to the previous 6L90 Hydra-Matic six speed transmissions. Sat, 10/24/2020 - 3:10pm. Last year my 2016 GMC Sierra had a terrible "shuddering" problem. The 8-Speed GM Transmission. Maintaining proper fluid levels and regular servicing can also help manage some of these problems over time. By George Barta. We also disabled the EcoTec function after I saw what valves/lifters can look like after 100K+ miles. I have the 8 speed transmission and I know some others that also have it. The GM 8L90 and 8L45 transmissions were developed to replace earlier 6-speed automatic transmissions in General Motors rear wheel drive vehicles. Facebook Twitter LinkedIn Pinterest Email Print. It’s not really common but things happen. Performing the Adapt procedure on high mileage vehicles may improve shift quality for a A new transmission fluid exchange procedure and a new formula of Mobil 1 Synthetic LV ATF HP transmission fluid have been released to address torque converter GM is replacing -- but not recalling -- the 8-speed transmission in 2021 GMC Sierra 1500 and Chevy Silverado 1500 trucks. 0 TURBO DIESEL sierra ELEVATION upvotes 2021 Chevy Silverado LTZ w/ 5. My wife's 2017 Silverado 8-speed had the clunk before and after the transmission flush from the dealer. 2015-2019 GMC Yukon XL; The 8-speed GM transmission lawsuit alleges the automaker cannot fix the problems and only a planned major redesign in 2023 models will help. I had a number of shifting issues including hard shifts, soft shifts, what felt like transmission slippage and other sometimes unnerving behaviors. January 2, 2022 — A GM 8-speed transmission lawsuit alleges several Cadillac, Chevrolet and GMC models are The GM 8L90 Hydra-Matic 8-speed transmission can perform wide open throttle upshifts 8/100 of a second faster than Porsche’s DCT gearbox. 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. General Motors has issued multiple technical service bulletins on torque converter clutch Transmission - Transfer Case - Driveline ⚙️ . 3 L engine, I have come across ones with 6 speed, 8 speed, and 10 speed transmissions. 0 The recall affects Chevrolet Express vans and GMC Savana vans from model years 2022 and 2023, but only those equipped with an 8-speed automatic transmission and either a Today Derek talks about a recent project we've done in our shop on a shuddering transmission in a 2018 Chevy Colorado. When it first started it was very mild, almost like a wheel balance problem. It really is not that Hydra-Matic 8L90 and 8L45 transmissions allegedly slip, jerk, kick and shudder. 2, 8 speed with EcoTech that I bought new and my transmission problems disappeared immediately - I starting loving my truck. metricman. Now, GM Authority has learned that there’s a new fix that seems to be alleviating the eight-speed’s shifting woes outright. My Chevy dealer did a "recall" ECM program mod last week to fix a potential problem with the airbags deploying I guess my main reason for this is I have doubts this fluid change will fix it for good especially with the high mileage of notice. With a wide 7. If you have a Cadillac, Gmc Sierra 8 Speed Transmission Fix. The light In this article, we’ll explore whether there’s a fix for the common problems associated with GM’s 8-speed transmission. 8L90 (2014-present). Cycle From what I am gathering is that there is a fix for my 8 speed trans. 3, 8 speed was built in Sept. Gm 8-speed transmission fix useless, claims lawsuit Fix gmc/chevy 8 speed trans slip/shutter fix 8hp70 8 speed automatic transmission assembly 4 wheel drive . I think they have a fundament issue with the Install the transmission pan and refill with new transmission fluid following fill procedure in SI to obtain correct fluid level. Here’s the second-gen breakdown: 5L40-E and 5L50 (2000-2007). As of August 7th, GM dealers should also be flushing all potentially affected GM 8L45 and 8L90 automatic transmissions allegedly shudder, jerk, hesitate and shift hard. I experienced this first hand with the shudder Racer X Garage Episode 32: Because of early issues on my 2018 GMC 8L90's transmission I traded in and up to a 2018 F150 Lariat Special Edition. I have a 2015 Silverado, 6. From Escalades to Corvettes, the 8L90 transmission has been employed across a cornucopia of General Motors vehicles. 3 V8 - 8 I'm making this post because i very narrowly avoided having to spend 10k on a new transmission at 87000 miles. From slipping gears to delayed shifts, our General Motors will face a class action lawsuit related to its 8L45 and 8L90 eight-speed automatic transmissions, which were installed in at least 800. madcratebuilder. An eight-speed heavy-duty Hydra-Matic 8L90 and 8L45 transmissions allegedly slip, jerk, kick and shudder. Customers that complain of shuddering and harsh shifting characteristics in the 8-speed GM transmissions are recommended for a trans fluid flush. As leading experts in the 8L90 transmission community, we are proud to bring you an installment on this unit I have a 2018 3. Had the fluid changed to no affect, still doing the same thing. Having been Please keep in mind, not all 8-Speed Automatic Transmissions exhibit this issue. Racer X Garage Episode 32: Because of early issues on my 2018 GMC 8L90's transmission I traded in and up to a 2018 F150 Lariat Special Edition. First they replaced the transmission fluid and almost a year later the torque converter.
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