6l80 adaptive learning

Like most other changes, the driving needs were to increase fuel economy, improve shift quality and reduce overall manufacturing cost by maintaining or reducing size and weight of the transmission. However some 2wd vans and HD truck versions had aÂ, J Series Trucks & Wagons, (I6 The gearing spread is a very capable 6.04, with ratios in each gear as follows: First: 4.02, Second: 2.36, Third: 1.53, Fourth: 1.15, Fifth: .085, Sixth: 0.67, Reverse: 3.06. Bulletin #: 0260 Manufacturer: GM Vehicle: All Trans ID: 6L45; 6L50; 6L80; 6L90 Trans Type: RWD 6-Speed Perform a Service Fast Learn Adapts after Every Major Transmission Service COMPLAINT: Unacceptable shift quality, usually immediately after a repair on the transmission or transmission control systems. The torque converter is a fluid turbine drive and - like those on its predecessor transmissions, the TH350C, 700R4, 4L60, and 4L80E - features a lock-up pressure plate for direct mechanically coupled driving from the engine crank. The 6L80 began manufacture in 2005 for release in 2006 model year GM vehicles, persisting until at least 2016 in both 6L80 and 6L90 versions. This allows the TCM to directly control apply and release pressure at the various clutches based off of the various driver and environmental inputs. Fits "M" version valve trains in heavy weight vehicles. As throttle pressure increases, D4 pressure will increase and stroke the forward abuse valve against spring force, which allows the orifice to be bypassed and fluid flow to the forward clutch and accumulator to increase for a quicker apply. 6L80 Adaptive Learning The 6L80 is fully equipped with several adaptive learning strategies. To handle the increased output torque capacity, the 6L90 departed from the long-standing GM 32 spline specification output shaft of the 6L80 and went to larger diameter 29 spline for most truck applications. I work on other people’s vehicles for a living. The forward clutch would then release, unseating the #12 checkball for a rapid exhaust of apply pressure. GM’s 8-speed RWD unit seems to be heading in the direction of more sophistication in the adaptive controls by programming based on each individual PCS’s flow characteristics. These components are designed to modify a shift by essentially acting as a shock absorber for the fluid pressure that is applying a clutch, brake or band. Chevrolet, Buick & GM Engines into the Jeep... Ford 1.8L - 2.5L "Pinto" Engines into the Jeep... 4L60E (and its tougher 4L65 & 4L70 variants). 6L80 Introduction; 6L80 Checking the Fluid Level; 6L80 Component Application Chart; 6L80 Control Solenoid Operation; 6L80 Shift and Control Solenoids; 6L80 IMS Operation; 6L80 Transmission Manual Shaft Switch; 6L80 Transmission Fluid Pressure Switch; 6L80 Solenoid and Valve Body Diagnosis; 6L80 Adaptive Learning; 6L80 Pass-thru Connector These components are designed to modify a shift by essentially acting as a shock absorber for the fluid pressure that is applying a clutch, brake or band. An Adaptive Learning System (ALS) is a Learning Management System (LMS) that, quite simply, can adapt to the needs of the learner. These units do not have a single “traditional” accumulator or servo piston in the circuitry. To properly address your customers’ complaint of shift feel, it is important to understand these various components, how they work and typical failure modes and corrections for each. Abbreviated Coast Down Shift Adaptive Learning: Lightly accelerate to 65 mph (105 km/h) and coast to 25 mph (40 km/h) (light braking can be applied). 187 pages and can weigh up to ~230 lbs. and the maximum output torque is 664 ft. lbs. So in addition to the previously noted hydraulic accumulator and valve components causing shift feel complaints when worn, add faulty solenoids, sensors and the PCM itself to the list when performing diagnostics and determining root cause. So wear at the clutch regulator valves or clutch boost valves could exceed the parameters of what adaptive learning compensates for, ... 6L90 Transmission 6L80 Transmission 6L50 Transmission 6L45 Transmission 4L70-E Transmission 4L60-E Transmission 4L65-E Transmission. Engine torque rating increases minimally, but the output torque rating of the transmission jumps up by nearly 220 ft. lbs. The 6L80 is a modular transmission, featuring removable bellhousings and tailhousings for interchangeability with the GM 90 Degree engines and other potential engines in the future.While the 6L80 is generally mechanically compatible with Chevrolet and GM Gen. III+ engines, due to its advanced control strategy, the 6L80 is functionally compatible only with Generation IV GM engines and their matched Engine Control Modules.Electronic challenges exist when mixing an… The same accumulator and servo piston components are still used on the 4L60-E as on the 4L60, and the same simplified apply chart for the 2-4 band, Forward and 3-4 clutches in Figure 1 can be used. With the adaptive learning, it comes back, but not as frequent. The Transmission Control Module (TCM) is an adaptive learning, 32-bit computer integrated into the valve body of the 6L80 / 6L90 and communicates with the Engine Control Module via the onboard vehicle CAN bus network. The term adaptive e-Learning refers to a set of techniques oriented to offer online students a personal and unique experience, with the final goal of maximizing their performance.. Adaptive e-Learning is based on the principle that every student is unique and has a different background, educational needs, learning style, etc. As PCS 5 fluid pressure increases (Figure 7), the clutch boost valve will stoke completely, opening clutch feedback pressure to exhaust and allowing full stroke of the regulator valve so that full clutch apply pressure is sent to the clutch. This type of technology allows for shift timing and feel adjustment as internal hard parts and clutch components wear that — in fully hydraulic or indirectly controlled transmissions — would have resulted in undesirable shifts. only) '72-'79, Small Block V8, Gen. Turn the key to position 2. As vehicle speed increases, the shift to 2nd Gear will occur and the 2-4 band will apply. It can also be controlled under DSC, or Driver Shift Control, e.g., "tap shifting". Figure 3 shows 2nd fluid being directed from the 1-2 shift valve to seat the #8 checkball, which meters the flow to the 1-2 accumulator piston and the 2nd apply piston in the servo assembly through an orifice. Read Part I of the Hydraulics Fundamentals series. Be aware of your output shaft version before proceeding with any adaptation. The transmission lacks a direct-drive, but features two overdrive gears. Procedure Reset Transmission Adaptive Learning DIY. That’s because the computer and solenoids have direct control over the shifts, providing very fine control of shift feel, often in clutch-to-clutch transitions. Adaptive learning — or adaptive teaching — is the delivery of custom learning experiences that address the unique needs of an individual through just-in-time feedback, pathways, and resources (rather than providing a one-size-fits-all learning experience). The 6L80 was approved for use in these vehicles weighing up to 8600 lbs. Key Takeaways. In many newer 6- and 8-speed transmissions, “traditional” accumulators and related valves are no longer needed. This accumulator valve has various size ratios from OE to provide different shift feels for various vehicle and engine combinations. .330". Adaptive and Fail-Safe on Mercedes Benz The 6L80 denotes that the transmission is a 6-Speed, Longitudinally mounted, and for 8000 lbs. Hydraulics Fundamentals Part III: Secondary Regulators, Hydraulics Fundamentals Part IX: Clutch Regulator Valves — Controlling Shift Apply and Feel, Hydraulics Fundamentals Part I: Main Pressure Regulator Valve Line-Ups, Hydraulics Fundamentals Part VII: AFL/Solenoid Modulator Valves, Hydraulics Fundamentals Part IV: Converter Clutch Control, Hydraulics Fundamentals Part VIII: Check Valves, Hydraulics Fundamentals Part V: Manual Valves, Hydraulics Fundamentals Part VI: Converter Limit Valves, Hydraulics Fundamentals Part X: Shift & Relay Valves. As the clutch regulator valve strokes against spring force and clutch feedback pressure, clutch feed pressure is regulated into the 1-2-3-4 clutch and it begins to apply. A valve that is tied into the 1-2-3-4, 3-5-Rev. LT). Position II: You should hear two clicks and all your dash lights should turn on. The addition of this throttle-sensitive, 1-2 accumulator pressure helps to better control the shift feel based upon the speed of the vehicle. Before we get … In 2006, GM introduced the 6-speed series of RWD units: 6L45, 6L50, 6L80 and 6L90. Accumulators and their circuits have been used for years as the primary method for controlling shift feel. While some internal hard parts vary between these torque ratios, GM was able to keep the hydraulic valves and calibrations the same. The 6L80 is doubtless a very successful OEM transmission, and a terrific conversion transmission in the right Jeeps and situations. In 4L60, fits '87-later auxiliary valve body styles only. These complaints can be on upshifts, downshifts, specific gear ranges or on all shifts. The transmission is automatically shifted featuring performance algorithms to minimize upshifts during closed throttle driving to prevent unnecessary shifting. As the vehicle is moved from Park to Overdrive, the forward clutch is applied. Abbreviated Coast Down Shift Adaptive Learning: Lightly accelerate to 65mph (105 km/h) and coast to 25 mph (40 km/h) (light braking can be applied). Now, the high-speed CAN network allows a high rate of data sharing between the units to achieve a collaboration between both engine and transmission functions. Eight different transmissions are covered. gm 4l30-e 4l430e hydra … Regardless of the transmission design, apply pressure accumulation is still occurring — but the related devices are much more varied. However some 2wd vans and HD truck versions had a 36 spline. Most of us have either seen or heard of the new 10-speed transmission Ford is offing behind the 2.3L EcoBoost, 2.7L V6, 3.5L EcoBoost, 5.0L gas, and 3.0L Power Stroke Diesel engines. From center support oil transfer holes to rear edge of the valve body. The 6L80 is a modular transmission, featuring removable bellhousings and tailhousings for interchangeability with the GM 90 Degree engines and other potential engines in the future. None of the above categories describe me. After repair has been done on any clutch to clutch transmission, it is very important to perform an adaptation or fast relearn. This PCS clutch pressure is then directly applied to a clutch regulator valve and clutch boost valve (except for the 2-6 clutch), which routes the clutch apply pressure directly to the clutches. This valve (Figure 8) regulates line pressure into the compensator feed circuit to hydraulically assist clutch return springs during release of the rotating clutches. Do not start the engine. It's RPO code is "MYC" and it is domestically manufactured in GM's Ypsilanti, Michigan plant. Press the gas pedal all the way. While not new to the 6L80, it uses an Input Speed Sensor to monitor input speeds to compare against engine speed and Output Shaft Sensor speed, using this data to adjust shift speeds under instantly detectable conditions. and GCVW of 21,000 lbs. When a complete overhaul of a transmission is performed, it is necessary to go through a ‘re-learning’ procedure conducted by a transmission technician. Maximum engine input torque for the 6L80 is 440 ft. lbs. The 6L80 uses a trans controller that is lightning fast and is actually mounted within the trans pan attached to the valve body. Be sure to check out: Hydraulics Fundamentals Part III: Secondary Regulators. The 4L60-E transmission basically kept the same transmission architecture as the 4L60, but introduced various electrical devices that controlled pressures based off of various inputs. Fits 4L60 '87-later auxiliary valve body styles only. This switch to indirect electronic control also provides greater precision in timing and shift feel by allowing real-time monitoring (via speed sensors) of the vehicle speed so that instant changes can be made to accumulator circuit pressures to adjust the shift feel mid-shift. This transmission makes an excellent conversion transmission due to its adaptability into most Jeeps longer than CJ5s. As transmissions continue to add speeds, new and creative ways for controlling shift timing and feel are being developed. The 4L60 primarily used a mechanical governor assembly for determining vehicle speed by engagement with the output shaft. Adaptive teaching is an approach aimed at achieving a common instructional goal with learners whose individual differences, such as prior achievement, aptitude, or learning styles differ. “Thuds,” “clunks,” “bangs,” “slipping” and “harsh” are all common words used by customers to describe unpleasant shift feel. 2wd transmissions feature conical shaped tailhousings and an output yoke, which are replaced with a typically shorter 4wd style output shaft of varying lengths and spline counts, depending on the application. A horsepower revolution spawned by GM's increasingly powerful Gen. III+ V8 engines and their aggressive platforms such as the Cadillac STSV, XLRV, various trucks and SUV's and the venerable Corvette. It uses incredibly advanced adaptive learning strategies to adapt to the end users driving style as well as account for normal wear. Both 2wd and 4wd versions of the 6L80 can be used equally well, and there are no inherent advantages to either one once you have installed our adapter assembly. The TCM is actually even programmed to adjust its operation for transmission clutch wear. It’s been on the road for a few years, and we’re starting to see some common failures for this unit. As with some other GM applications you will need to erase the adaptive values and perform a “Fast Learn” prior to operating the vehicle. Like other GM transmissions, the last two digits indicate the relative torque of the unit, with the higher numbers having increased torque capacity for higher performance applications. This process is known as "adaptive learning" or "shift adapts" and is similar to the closed loop fuel control system used for the engine. Because of this, the 6L80 - despite having two or three more gears than its predecessors, is unexpectedly short in length. Forward clutch failure or harsh forward engagement could be caused by leakage in the accumulator circuit, most notably at the forward abuse valve bore in the valve body and at the piston-to-pin interface of the accumulator piston. This 2nd apply piston also has different OE sizes for various performance shift feels. In older 3- and 4-speed, fully hydraulic transmissions, accumulator circuits were typically large pistons and springs, with numerous additional valves helping to control pressures and flow. What is most welcome about it is that it is a very durable, functional and impressive transmission assembly and appears to have a terrific prospect with GM and the aftermarket community.Â, To handle the increased output torque capacity, the 6L90 departed from the long-standing GM 32 spline specification output shaft of the 6L80 and went to larger diameter 29 spline for most truck applications. The 6L80 was, from the ground up, developed as an electric over hydraulic transmission with microprocessor control. Repeat 10 times. In professional learning contexts, individuals may "test out" of some training to ensure they engage with novel … As electronics came into play, solenoids were added to the accumulator circuits, giving better control to the shift feel based on driving conditions, thereby eliminating the need for some valves. The TCM also monitors the input and output speed sensors, and as clutches and components wear, “adapts” and changes PCS output pressure to compensate and maintain proper shift timing, overlap and feel. Even during release, the clutch apply cavity retains fluid through the clutch exhaust backfill circuit, which is fed by clutch oil through the clutch regulator valves as they exhaust during release. Likewise, wear at the actuator feed limit valve or dirty/faulty solenoids could cause these complaints. Here are some of the subjects in this manual: 4L30E: Case Connector ID, 4L60/80E: Hard 1-2 Upshift, 4L60/65/70E: Pump Interchange, 4L80/85E: Surge While Towing, 5L40/50E: Adaptive Learning, 6L80: Adaptive Learning, LCT1000: PRNDL Inoperative, 2ML70: Modes of Operation. The HydraMatic can be adapted to the popular Jeep transfer cases, including the: Essentially all factory GM 4wd applications available with an OEM configured 6L80 have adapters and transfer cases that are prohibitively long for a Jeep, and transfer cases whose sizes and gearing fall short of desirable for most Jeep applications. The manual valve directs regulated line pressure into the D4 circuit (Figure 2), which seats the #12 checkball. In clutch-to-clutch apply applications, timing is critical, so maintaining some residual oil pressure in both the clutch apply and clutch release cavities of a clutch will allow it to essentially be primed for quicker action when commanded. Lew did do a TCM tune with a Diablo template for me that stops the adaptive learning and with that tune it stops completely. Get 6L80 transmission rebuilding tips, 6L80 troubleshooting help, 6L80 technical service bulletins, 6L80 diagnostics and 6L80 technical information from TRNW. It features a dry weight of ~195 lbs. The 6L80 in its transaxle version for the Corvette, The 6L80 has surprised us power transmission aficionados with its wholesale adoption of new and very different technologies. Adaptive learning programs that emulate strategy games help students see learning as something that is fun, not tedious. Adaptive learning, also known as adaptive teaching, is an educational method which uses computer algorithms to orchestrate the interaction with the learner and deliver customized resources and learning activities to address the unique needs of each learner. Adaptive learning personalizes materials presented to students based… It is important to have the circuit be throttle-sensitive, as quicker and firmer shifts are desired at higher speeds for improved shift feel, as well as to prevent prolonged clutch slip and heat build-up that reduces clutch life. This version is 1-3/8" longer and about 25% of its internal parts differ. I & II Adapts and fast learn procedures should be perform if any of the following occur: Sonnax is an industry leader in the cutting edge design, manufacture and distribution of the highest quality products to the automotive aftermarket, commercial vehicle industries, and industrial sectors utilizing drivetrain technology. Fits "L" version valve trains in light/medium weight vehicles only with valve dia. Adaptive Learning Technologies Future of Education Technology adaptive personalized learning elementary school best adaptive learning tool for k-5 k5 k-8 individualized adaptive learning tool for middle school Read on, Leave a Comment, and you can Win a Free 1 Year Moby Max License! It is important to understand the details of how these shifts occur, as there are still components in the circuitry that can fail and lead to shift feel complaints. vehicle weights. At low pressure/idle, this fluid is forced through the orifice, where it will gradually stroke the forward clutch accumulator piston against opposing spring force, thus absorbing the D4 pressure that is also routed to apply the forward clutch. Electronic challenges exist when mixing and matching the 6L80 as they must be matched to their particular engine. I want to work on the shift time and pressure now. Always perform adaptive and fast learn pro-cedures after any of these situations: For this same reason, it is not necessary to have the accumulator piston stroke against throttle sensitive fluid force; spring force alone is adequate. This also required numerous support valves (throttle valve, MTV downshift, MTV upshift, TV limit, line bias) to fine-tune the shift control based on driver needs. or gross weight of 14,000 lbs. Figure 5 — GM 6-Speed RWD Clutch and Solenoid Apply. May be accom- panied by various computer codes. (incl. In a similar vein, GM Gen. IV engines do not always take kindly to other transmissions such as manuals (essentially no longer available from GM), and most automatics that predate the 6L80. Valve Bodies Tech Articles. Figure 1 shows a very simplified apply chart showing clutch and band activity, as we focus on how the apply and release pressures are accumulated. GM was still using their trustworthy 4L80E transmissions for heavier duty use, which was essentially a 1960's technology TH400 with added 1990's overdrive and electronic controls. Recommended. This can further extend the service life of the transmission and its components. But, GM had been in transmission limbo, so to speak, needing a modern transmission to fill the duty gap between the excellently versatile 4L60E (and its tougher 4L65 & 4L70 variants) and the Allison transmissions. Maximum shift speed is 6500 RPM. I am interested in enhancing my vehicle’s performance. Interactive support when problem solving – Rather than telling students what they should do next, it’s important that the system emulates a live tutor, prompting students to rethink strategies that may not be working. PCS 5 fluid pressure is directed to both the 1-2-3-4 clutch regulator and 1-2-3-4 clutch boost valves. So wear at the clutch regulator valves or clutch boost valves could exceed the parameters of what adaptive learning compensates for, and poor shift feel and timing could occur. 6L80 valve body Unsubscribe from Gary Ferraro? As an essential element of learning and teaching in the 21st century, adaptive learning has become a core idea within education. The 6L80 would have big shoes to fill, with legendary predecessors like the TH400, 4L80E and 4L60E transmissions. The case is a cast aluminum alloy. Unlike a traditional LMS, which acts as a repository of information and a tool for the training administrator to assign modules and track progress, an ALS assigns modules Recommended fluid is Dexron VI and it typically accepts a 10 quart thru 12.6 quart fill depending on its application. This procedure will enable clutch apply adaptive learning for the C2 and C3. The 4L60-E eliminated these valves, the governor assembly and mechanical throttle controls by accomplishing the same functions with an EPC (electronic pressure control) solenoid (Figure 4) controlled by the power control module (PCM) getting inputs from speed sensors and a throttle position sensor. lbs., with a respectable GVW of 15,000 lbs. The GM Hydramatic 6L80 transmission heralds a significant change in the design of automatic transmissions at General Motors. Cushioning of this high pressure allows the apply component to engage gradually, instead of slamming on and rattling … Because of the advantages of personalized learning content, Colorado Technical University began piloting courses with adaptive learning in the beginning of 2012, launching the adaptive learning platform intellipath. Repeat 10 times. While Sonnax makes every effort to ensure the accuracy of technical articles at time of publication, we assume no liability for inaccuracies or for information which may become outdated or obsolete over time. The 6L80 / 6L90 uses three-way solenoids and variable bleed solenoids for improved shift quality. Thus, by the TCM controlling the PCS, a gradual pressure is applied to the clutches through the valves, which aids in controlling shift feel. The explanations put forth for Adaptive Learning (while informative) still didn't provide me with a full grasp as to what it does.

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