All of these changes increase the 6L90 maximum output torque rating to 885 lb-ft, and the GCVW jumped to 21,000 lbs. Options if you must have 6 speeds but dont want the comp issues. It's a 6l80e tranny I pull a 5800 lb loaded trailer five days a week and in 58000 miles no issues at all had a tune put in it helped the 2-3 shift immensly Re: Tranny reliability 5.3 and 6.2 Jun 28 2012, 1:29am With this method, the transmission is tested as a complete system, as opposed to disassembling the transmission components and testing each separately. In this application, the 456 clutch will typically fail due to overheating. In fact the input torque rating is 440 lb. Was told to drive for 300 miles and if problem returns, I would need a new torque converter. Automatic transmissions Early models. Every company produces faulty products from time to time. The 6L80E transmission is now for sale at our lowest price! While it can shift flawlessly and better than many other counterparts, there are known problems. Designing and manufacturing this new transmission was an enormous undertaking for them, with more than 150 engineers spending nearly four years to bring it to market. The 6L80 is a huge beast to package and the case itself is much thinnner and weaker IMO than the 400 or the 4L80 cases. ATI can build up your 6L80E transmission for up to 1000HP. and it can handle a total gross vehicle weight of 8,600 lb, which makes it a great transmission for LS swaps with no modification needed whatsoever. The 6L80 is a robust transmission and can handle a ton of power. 6L80 w/ the tap shift, and a MAST M90 ecm and be done with it. engine torque: 430 lb-ft Max. From its clutch packs helical cut gears to its performance Built lock-up torque converter you won't find a better deal on the market. Similar to some other transmissions, the 6L80/90 may use a cooler bypass valve to improve transmission warm-up (figure 7). How good is the 6L80 transmission? With over 300 patents and over 600 individual parts, the transmission… A number of popular GM vehicles have the 6L80 transmission, including the Cadillac Escalade, Chevrolet Silverado 1500, Chevrolet Camaro, Chevrolet Suburban, Chevrolet Tahoe, GMC Sierra 1500, and GMC Yukon. 6L80 / 6L90 transmissions do not typically use a dipstick. Cost and Process, Torque Converter Problems: Symptoms & Replacement Cost, Transmission Solenoid: Symptoms & Replacement Cost, 10 Pro Tips on Buying Used Transmissions For Sale, Isuzu Rodeo Transmission Problems & Cost | 4L30E, Toyota Sienna Transmission Problems & Cost | A541E, Ford Five Hundred Transmission Problems & Cost | AWF21, Dodge Durango Transmission Problems & Cost | 46RE | 545RFE | W5A580 | 65RFE, Buick Enclave Transmission Problems & Cost | 6T75E, Used and Remanufactured BMW Transmissions For Sale. In February 2006 GM announced that it would invest $500 million to expand the Toledo Transmission plant in Toledo, Ohio to produce the 6L80 in 2008. Most of the drivers usually send their damaged cars to repair shop for an emergency repair or for its maintenance. 8L90E 8-Speed Transmssion This allows better reliability, better shift quality, and reduced rotating mass. The gear ratios offer a generous ratio spread of 6.04:1 from first to sixth gear, and the ratios are very close together, rivaling most four-speed transmissions. The 6L80 transmission has a dry weight of 195 lbs, and can weigh as much as 230 lbs when filled with the recommended amount of Dexron VI transmission fluid. A number of 6L80 transmission problems can occur however, including slipping and failure of reverse gear. From second to sixth gear, the ratios are extremely close, providing world-class performance. Chevrolet Silverado/GMC Sierra 1500 Series, http://www.cadillacfaq.com/stsfaq/tsb/data/tsb/05-07-30-023.pdf, "GM Corporate Newsroom - United States - Home", https://en.wikipedia.org/w/index.php?title=GM_6L80_transmission&oldid=992904519, Creative Commons Attribution-ShareAlike License. TH400 w/ Gearvendors OD to gear split. Just so those pitfalls are out there. Pictured below are just a few of the Updates & Upgrades that go into each 6L80E Transmission. Max. The 6L80 (and similar 6L90) is a six-speed automatic transmission built by General Motors at its Willow Run Transmission plant in Ypsilanti, MI. New pistons & retainers where needed. I have 1 6L80-E running in a Magnacharger equipped 2007 Corvette, no problems. A number of 6L80 transmission problems can occur however, including slipping and failure of reverse gear. John Parmenter, Precision International Tech Advisor goes over in detail resolving problems on the 6L80 transmission. Click here for complete warranty information. This transmission is designed to handle as much as 440 lb-ft of engine torque and 664 lb-ft of output torque. Put simply, it’s the converter. To view our 2020 replacement transmission pricing guide, click here. In response to the question ‘how reliable is the 6L80 transmission?’, the answer partly depends on how well the transmission is maintained. The Hydra-Matic 6L90 (production code MYD) is a six-speed automatic transmission produced by General Motors for use in rear- and rear-biased all-wheel-drive vehicles with a … It’s a longitudinal transmission (that’s what the L in 6 L 80E stands for). For more information on 6L80 transmission problems, click here. If the transmission cooler has evidence of transmission hard parts failure, it must be replaced. They are designed for RWD and AWD/4WD applications, and feature clutch-to-clutch operation with a wide gear ratio for optimum performance and efficiency. Dealer updated software. The 6L80 (and similar 6L90) was introduced in late 2005 and is a fully automatic, six-speed, clutch-to-clutch, rearwheel drive, electronic-controlled transmission. Copyright © 2021 - Transmission Repair Cost Guide, 8 Options if Your Transmission Has Failed, Transmission Diagnostic Trouble Codes (DTC), Best Remanufactured Transmission Companies, Hybrid Battery Replacement Cost and Prices, 10 Most Common Transmission Problems & How to Fix Them, How to Change Transmission Fluid Step by Step, What is a Transmission Flush? The 6L80’s 32-bit transmission control module (TCM) monitors transmission performance and compensates for normal wear in components such as clutch plates, so … The 6L90 transmission case is 1-3/8” longer, which provides extra room to house two additional pinion gears (6 total). 28000 mi: Transmission vibration has returned. For more information on 6L80 transmission problems, click here. recommended shift speed: 6500 rpm Max. The truck is fine so far (but I have only had it back from the dealer 2 days). First introduced in 2005, the 6L80 transmission is a 6-speed automatic gearbox that is made by General Motors at their Willow Run transmission factory in Ypsilanti Michigan, and at their transmission plant in Toledo, Ohio. There’s also strengthened input and output gearsets, and heavy duty applications receive one more clutch plate in each clutch pack. We offer either 6L80E and 6L90E (additional core fee) transmissions kits. The transmission fluid was drained and flushed, the filter changed, and a new transmission fluid added. Recently did a filter and fluid change in my 09 Silverado 6L80. A number of 6L80 transmission problems can occur however, including slipping and failure of reverse gear. No problems. In response to the question ‘how reliable is the 6L80 transmission?’, the answer partly depends on how well the transmission is maintained. Super 6L80 Transmission build Send us your 6L80 transmission and we'll transform it to the most reliable unit there is anywhere! It was introduced in late 2005, and is very similar in design to the smaller 6L45/6L50, produced at GM Powertrain in Strasbourg, France. GM states, ". Plate-type oil-to-air (OTA) transmission coolers must always be replaced. As with other manufacturers, the GM cooler bypass valve can fail. It features clutch to clutch shifting, eliminating the one-way clutches used on older transmission designs. These GM kits comes with the necessary hardware to directly bolt the transmission to the Gen 1 and 2. So what’s the most common failure that’s seen time and again with these? At 500HP, the clutches in these units go out and at 700HP you WILL start hurting hard parts. The 6L80E has a gear ratio spread of 4.03, 2.36, 1.53, 1.15,.85 and.67. The 6L90 transmission is slightly longer and taller than a comparable configuration 6L80 due to it's beefier internals. The main difference between the 6L80 transmission and 6L90 transmission is the strength of the internal components. • Slips in Reverse • Slips in 3rd • Slips in 5th • Delayed Reverse Engagement FLUID CHECK PROCEDURE. In response to the question ‘how reliable is the 6L80 transmission?’, the answer partly depends on how well the transmission is maintained. The problem with these transmissions (2008 - 2016 6L80) have this issue. Used a Power Torque filter from Oreilly's. 6L80 (RPO MYC) and 6L90 (RPO MYD) transmissions equipped in the GM C/K full size trucks and SUV’s, Cadillac D body (STS-V) and the Cadillac/Chevrolet Y body (XLR, Cor-vette) may experience any or all of the following complaints. Hyundai/Kia Motor Company introduced its first, internally designed-and-manufactured A6 six-speed automatic transmission in 2009. We pull out all the stops with our Hydra-Matic 6L80 build. If you were wondering how much HP can a 6L80 handle? Entire transmission cooling system must be completely cleaned, hot flushed, and flow tested. Have Peace Of Mind, knowing that your new 6L80E Transmission has all the Updates developed by General Motors Engineers combined with the Latest Industry Advancements providing Unparalleled OE Strength and Durability. GM 6L80 Series Transmission Upgrades & Repairs Presented by Sonnax. The 6L90E transmission is the redheaded stepchild of GM, a company known for producing rugged and reliable work trucks, cargo vans, and box trucks. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. a modular transmission, featuring removable bellhousings and tailhousings for interchangeability with the GM 90 Degree engines and other potential engines in the future. There is a drum inside the transmission that has a weld on it that ends up cracking, which in turn affects the pump (I don't know what I'm talking about, just reiterating in broken English what I was told) and eventually transmission failure. The reason I ask is the following: I have 2 6L80 E running in Callaway modified 550 horse cars, with no problems in MULTIPLE drag strip and road course events. On the transmissions that 'blew up' can you itemize what part failed or was it multiple parts ???? The 6L80 (and similar 6L90) is a six-speed automatic transmission built by General Motors at its Willow Run Transmission plant in Ypsilanti, MI.It was introduced in late 2005, and is very similar in design to the smaller 6L45/6L50, produced at GM Powertrain in Strasbourg, France.It features clutch to clutch shifting, eliminating the one-way clutches used on older transmission designs. gearbox torque: 664 lb-ft Max. Cadillac PDF info on 6L80-E Transmission: This page was last edited on 7 December 2020, at 18:53. Sonnax High Performance Product Line Manager, Gregg Nader, delivers an in-depth look at four popular GM 6L80-series transmission upgrades and repairs. Experience the difference with the new SS Six-Speed Transmission! Complete rebuild with all new gaskets, seals, rings & filter. How good is the 6L80 transmission? All previous GM transmissions had been based on hydraulic controls with more electrical aspects with each upgrade, but this unit was developed as a electro/hydraulic controlled transmission. Replace or bypass the valve will address the issue. The TCM-2650 Gateway will allow you to adapt the GM 6L45E, 6L50E, 6L80E and 6L90E transmission to all previous Generation GM Engines. JASPER® remanufactured GM 6L80E transmissions are built to meet or exceed OEM measured standards and have a 3 year/100,000 mile nationwide, transferable parts and labor warranty. Our 6L80E transmissions are more durable and reliable, you can drive with confidence after you have installed one of our units. For more information on 6L80 transmission problems, click here. To develop this test method, a 6-cylinder EcoTec 4.3L engine with a 6L80 six speed automatic transmission from a 2014 Chevrolet Silverado was installed in an engine dyno test cell. The 6L80/6L90E transmission fills a much needed duty gap between the versatility of the 4L series and the Allison variety. Featured products include the heavy-duty 4-5-6 clutch apply piston kit, high-strength pump slide spring, proven line pressure booster kit and … The truck has 28,000 miles on it, didn't need a fluid/filter change, but I wanted to run Amsoil in it. For those car owners that have 6R80 transmission, you may have been slightly alarmed if you notice something unusual with your car. GM 6L80 and 6L90 units are now starting to reach their prime age in the repair cycle, and techs across the country are starting to see a consistent pattern of transmission failures with full-size 6L80, 6L90 vehicles. That’s obviously quite a lot of power, which is why the 6L80 transmission is used in high-performance applications like the Chevy Camaro and Chevy Corvette.
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