6l90 delay in forward Dec 15, 2022 · The complaint Some 2020 Ford Explorers and Lincoln Aviators equipped with the 2. However, there are still some 6L90 versions without the extra plate to match certain applications when needed. With the advent of new vehicles with greater performance needs, the 6L90 transmission came at a very critical time. Related Articles – Allison 1000: No forward movement – Ford 8F series identification guide – Are you maximizing your scan 6L80/6L90 Slips During Launch, Delay into D or Clunk at Engagement This bulletin applies to the following vehicles. Possible DTCs: P0741, P0742, P0751, P0752, P0756, P0757, P0894. Hopefully this will help some people that may experience this sudden loss of drive in their GM pickemup. Once you start to try to go, there is a delay in it actually grabbing/engaging. While no movement can Transgo 6L80/6L90 SHIFT KIT SK 6L80 Fits 2006-2018 6L45, 6L50, 6L80, 6L90 Features and benefits: Erratic shiftsDelay or delay-bang forward, Nov 8, 2022 · This will result in 1-2-3-4 application problems. com FREE DELIVERY possible on eligible purchases Delay or delay-bang forward, as well as Oct 7, 2015 · Over the past few months i've noticed a more obvious slip while shifting from 2nd to 3rd gear. They are written to inform these Aug 30, 2023 · You could have a 6L80, 6L90 or Allison LCT1000 or 2500 but not 100 pct sure unless you take a look underneath or check the RPO codes MYC (6L80) or MYD (6L90) or Allison 1000: MBV - TRANSMISSION AUTO 6 SPD, ALLISON, 1000, CONV CLUTCH, WITH PARK PAWL MBW - TRANSMISSION AUTO 6 SPD, ALLISON, 1000EVS, CONV CLUTCH WITH PARK PAWL Dec 30, 2020 · The complaint A GM truck equipped with the Allison 1000 transmission has a complaint of slipping badly in drive or no forward movement. Have done nothing What is the difference between 6L80 and 6L90 transmission? The main difference between the 6L80 transmission and 6L90 transmission is the strength of the internal components. Product specifics: Brand: - TRG-SK6L80 Delay or delay-bang forward, as well as This TransGo 6L80 SHIFT KIT® Valve Body Repair Kit fits 2006 and later General Motors and BMW vehicles equipped with the popular 6L45, 6L50, 6L80 and 6L90 Problem – Harsh or delayed shifts, slipping, no forward/reverse gears. : 16-NA-019 To complete the Transmission Service Fast Learn procedure, enter GDS2 Diagnosis and navigate to: • Module diagnostics Home Transgo SK 6L80 Shift Kit Fits GMC Chevy Cadillac 6L45 6L50, 6L80, 6L90 2006-on. Sent it back Mar 1, 2019 · Replace 3-5-R/4-5-6 clutch housing, retaining snap ring and backing plate with the updated second design level parts which comes in a kit (Figure 6). This condition may be present in more than one forward gear or if the condition is bad enough, it may result in a no movement forward condition. You might notice this delay in both drive and reverse gears. Possible DTC 0757. Shortly after the transmission has begun to develop forward and reverse engagement problems when the transmission is cold. It's our houses third vehicle, doesn't get driven much (today was my monthly happy to drive the full size to work day) and has shuddered and lurched small amounts in the past but this showed up with no warning. In this video, we cover the basic procedure for the reset of the trans. Condition Some customers may comment on any of the following conditions: Sep 23, 2014 · What they have in common is working on the 6L80/6L90 for the first time. Truck is Dec 17, 2021 · The complaint A 2015 Ford F250 equipped with the 6R140W transmission has just been overhauled. Feb 2, 2014 · Hi all, New to the site, and hoping somebody can help me. Code was P2723 (Pressure Control Solenoid E Performance Or Stuck Off) I was then able to drive it home in 3rd gear. Sep 22, 2023 · the 6l90 and the allison are vastly different units. Apr 17, 2022 · The Problem of having “Delayed Forward and Delayed Reverse” in the 6L80 Transmissions may NOT just be a Problem with Malfunctioning TEHCM Switches, but may also involve LEAKS from Damaged Switch Films. This is not neck snapping but is definitely noticeable. Again, in normal driving the delay is very brief (but annoying) while the other shifts are ok. Some key updates include: - For the 6L50, an updated TCC calibration was released to address booming and vibration. Only annoyance is the automatic transmission, I think it’s a 6L90? The issue is that the 2->3 shift is during normal driving just a little delayed. never even seen the inside of a auto trans before . 0 6speed trans no forward gears. Subsequent 1-2 shifts have acceptable shift feel. Shifting delays are normal in extreme temperature changes, especially bitter cold temperatures. 0 (6L90), 2007-2014 Chevrolet Silverado 2500HD/3500 HD 6. 0 and when I shift into reverse it has a delay of about 10 seconds. i went for it pulled the valve body and found the check ball Jul 1, 2018 · 6l80/6l90 reverse and 3rd and 5th gear problem. TSB 08-07-30-015 – Chevrolet Express 3500 4L80E Problem – Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse Problem – Harsh or delayed shifts, slipping, no forward/reverse gears. The truck was still driveable going forward so i got it back to the house fixed the problem with a coupler still no reverse. If you tow/haul frequently, or nee This webinar was presented on 7/25/17. This video details a common issue with the 6L80E transmission, particularly in Chevrolet and GMC trucks with the 5. Then engine revs up and it doesnt go forward. 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 longitudinal powertrain Page 2 November, 2019 Bulletin No. Ball The 2007 – 2008 Chevrolet Silverado 2500 HD is designed to tow and haul just about anything. The hydraulic system primarily consists of a vane-type pump, two control valve bodies, a converter housing, and a case. It has a higher torque capacity of 690 lb-ft, making it well-suited for heavier vehicles. air check of trans that drove out perfect. Jun 3, 2020 · Starting in the 2006 model year, General Motors released the 6L80E and 6L90E transmissions that developed several issues that tend to frustrate transmission as well as body shop technicians servicing them globally. I get no errors on my scan tool, I have no forward gears at all. Feels like clutch slipping and then grabbing once the RPMs are high enough. 3L Gen 5 engine. Once hope, I reset the engine light, and once again had no forward gears. This lurching motion also occurs when upshifting 4/5 or 5/6, I think; not 100% sure. 0015” across the slide. 6L90 are quickly becoming the transmission of choice for many GM vehicles. 2) exceeds 3 seconds. No slipping, or weird noises, and no problem in any other gear. • Damage to any or all of the following clutches; 1234,456,35R. The 6L80E transmission is prone to issues that include: 2-3 harsh or delayed shifts, harsh or delayed shifts from park or reverse, burnt 1-2-3-4, or 3-5 reverse clutch, check engine light (DTC P0751 Code), converter shudder due to flaking of the converter lining, shudder on low/reverse apply Subject: Slips in Reverse or Third, Delayed Reverse or Drive Engagement, DTC P0776, P2715, P2723, Harsh 2-3 Shifts (Inspect 1-2-3-4 / 3-5-R Housing and Pump Seal Rings) Models: 2006-2009 Cadillac STS-V, XLR, XLR-V 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT, XLR 2006-2009 Chevrolet Corvette 2007-2008 Chevrolet Silverado Transgo Shift Kit for the GM 6L45, 6L50, 6L80, and 6L90 automatic transmission. Apr 21, 2019 · I've worked on cars since i was a kid but automatic transmissions are way above my skillset . I've noticed this at varying temperature ranges with the truck. Car pan and Filter. 2500hd. I have a 2007 GMC 2500hd new body style, 6. Reprogramming Kit. These cover the feed oil circuits for the 3-5-R and 1-2-3-4 clutches. Delay or delay-bang forward, as well as delay reverse engagements Extreme pressure damage Damaged pressure switches Codes: P0729, P0731, P0732, P0733, P0734, P0735, P0751, P0752, P0756, P0757, P0761, P0762, P0776 and P0777 . Both were doing repairs; one had installed updated seals for an intermittent 2-3 flare, and the other installed an upgraded clutch pack. Generally, the customer would complain about a delayed or slipping engagement, usually going into reverse. Nov 14, 2016 · 6L80, 6L90; Dodge-Cummins Diesel; Powerglide; TH400; Delayed Forward; Forward clutch failure; Line Pressure Booster Kit 4R70W-LB1. Avoid revving your engine during shift delays. Replacing transmission components will not correct the condition. I fix the line again everything i thought was good and the trans had no reverse. Reverse delayed engagement 6l80. Let me explain before you get upset and rip this page out of the magazine. This is most likely to occur under light throttle conditions. 0-liter engine and 6L90 transmission. Replace the 3-5-Reverse clutch apply piston that has no notches and the updated 3-5-Reverse waved plate that is stress relieved; it is darker in color than the first design waved plate (Figure 6). They both had the same question: what would cause a "no-move" Forward or Reverse after the rebuild? Oct 18, 2024 · Delayed Transmission Engagement. Nov 1, 2013 · Cause # 2: When the transmission was disassembled, the input carrier was found to be installed upside down onto the 1-2-3-4/3-5 Reverse Housing. Apr 5, 2022 · In simple terms, the 6L50, 6L80, 6L90, 6T70, 6T75, 6T80 all use the same design TEHCM. If you notice the delay is absent in warmer temperatures, there’s no need to worry. pullup select - On/Off Gears Magazine - The Source for Transmission Industry Know How May 31, 2022 · On the back of the stator support, there are seal rings. The General Motors 6L80-E & 6L90-E transmissions are among the most diverse and capable transmissions of their time; being used in everything from exciting muscle cars to family SUV’s. Oct 13, 2023 · If the unit had low-pressure issues, delayed engagements, especially when hot, or a ‘shaky’ needle when observing line pressure on a gauge at idle, there might be issues here. I found this out as the trans started slipping. 4606651 If the customer describes the condition as a delayed or slow engagement time with or without a harsh or bump Sep 14, 2014 · All forward and reverse gears work and shift firmly (not hard, but not unnoticeable, clean and firm is the most apt description). Correction Important: Replacing transmission components or complete assemblies will not improve the condition. TSB 08-07-30-015 – 4L80E Transmission Problem – Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse. No Reverse : Difficulty engaging reverse gear could point to issues with the solenoid, valve body, or a faulty torque converter. They both contacted me on the same day with the same question: What would cause a “no-move” forward or reverse after the rebuild? 6L80/6L90 Delayed Engagement, Slip, Shudder, Clutch Damage Concern: Several customer symptoms may be present depending on where the leak is present, these include; • Delayed Drive and/or Reverse engagement, shudder or slip on acceleration or on a shift, hard 2-3 shift hot. We have seen several patterned failures, written numerous articles, and found countless fixes to keep these units on the road (and the list doesn’t end). Filter and fluid I'm sorry for the delay you've experienced, I've just come Oct 11, 2024 · The 6L90 is an upgraded version of the 6L80 and is designed to handle even more power and torque. Temperatures can affect shifting. TSB 08-07-30-015 – 2002-2007 GMC Sierra 3500 HD 4L80E Problem – Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse Problem – Harsh or delayed shifts, slipping, no forward/reverse gears. Possible DTC Mar 21, 2023 · If delayed engagement is not the correct term. On several occasions yesterday in drive and reverse, it seems like it engaged normally in idle. GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to OE design shortcomings. This is a disassembly or a tear down of a 6L90 automatic transmission for a no movement condition in forward as well as reverse range. Patent Pending ® Fits: 2006-2020 6L45 thru 6L90 Legs Step 1 Plain Cotter Pin Assemble EPC Relief 3/16” ball & Plain Spring into New Bushing & Spread the Cotter Pin legs. The trans fluid is good. 0, 6L90 transmission wont go in reverse after warms up and delays in forward gears - Chevrolet 2007 Silverado 3500HD question Search Fixya Press enter to search. I have a 2010 Chevy 2500hd with a recent reman 6l90 transmission after which the TCM was reprogrammed to the latest GM program. In this Drivetrain 101, we’ll analyze all of its most prolific problems, solutions and upgrades. Problem: Harsh or delayed shifts, slipping, no forward/reverse gears. TSB 08-07-30-015 – 2002-2007 GMC Sierra 2500 HD 4L80E Problem – Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse Mar 1, 2014 · A 2006 Chevy 2500 truck rolled into the shop with a complaint of a reverse delay, but mainly after the vehicle warmed up a bit. It does it when it warms up and when I come to a stop. Version 1 Modified Released May 14, 2020 GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". But it’s 6L80 & 6L90 transmission have some serious problems that will prevent it from doing any work in all. In this video, i go over 2 very common problems with the 6L80E that would cause no forward movement. With so many of them in need of repair, they have Aug 17, 2023 · A quick video on 3-5-R clutch failure and to demonstrate air check procedures to confirm or deny the drum's base welds are responsible for burn-up of the 3-5 8480988* Reverse to Drive Delay Verification 0. When I removed the trans I noticed the electrical connector was FULL of fluid. Problem – Harsh or delayed shifts, slipping, no forward/reverse gears. Jul 15, 2014 · Fits Gen. Watch this video and learn about the common issues with this transmission. Delayed Engagement Park to Reverse or Drive is present if the time difference between Gear Selected (Pt. Equipped with 6L80 or 6L90 Automatic Transmission (RPOs MYC, MYD) This bulletin has been revised to update the 2006-2009 Vehicles correction section and update the Labor Operation to the Global Labor Code (GLC). However, filter quality may not be the underlying issue. Chevrolet Express 2500-3500 (6L90-E), 2010-present Chevrolet Silverado 2500HD/3500 HD 6. 2017 chevy 2500 hd 6. This document summarizes updates made to the 6L50, 6L80, and 6L90 transmissions. May 25, 2014 · 6L80-E Transmission - No Forward - No Trouble Codes - Transmission Repair Sep 20, 2021 · Fixes the ring leaks that can cause 3rd & 5th ratio codes, delay or delay-bang forward or reverse engagements. Some of these issues include slipping in third or reverse, harsh 2-3, 4-5 shifts, and/or delayed engagement of reverse or drive. Then blew the line off. The TEHCMs for all applications use different part numbers, which means they may not be interchanged with another part number, but all of the TEHCMs are manufactured by Bosch for GM. 0 (6L90), 2015-2019 Chevrolet Silverado 2500HD/3500 HD 6. I can do a relearn and it will initially shift fine then progressively go back to the shift in, out, in of 6th. Again, if someone else built this before you, just because it looks good does not mean it is good! Apr 1, 2011 · What they have in common is working on the 6L80/6L90 for the first time. The 6L90 transmission case is 1-3/8” longer, which provides extra room to house two additional pinion gears (6 total). As it warms towards operating temperature, the engagement problems diminish and are gone until the next cool-down period. The 6L90 also features some enhancements in its hardware compared to the 6L80. Foot is HELD on Brake during maneuver. throttle occured IOD port A: Glow plug relay - Closed/Open • Stepper motor inhibit - Run/Inhibit Service Throttle Lamp - On/Off EGR vent enable - On/Off • Shift A - On/Off Shift B - On/Off TCC enable - On/Off (4L60E only) • Force Motor enable - On/Off IOD SOD status register: Coolant temp. What You Should Know about Transmission Delays. Solution: Rebuild or replace the valve body. 3 hr *This is a unique Labor Operation for Bulletin use only. It will usually jump about 500 - 700 rpm when this happens but the other day it jumped almost 2000 rpm then shifted to third. Jun 3, 2019 · The back of the stator support houses sealing rings, which seal the feed oil circuits for the 35R and 1234 clutches. The result was mostly a slipping or delayed engagement that went into reverse. It just wont last as long, but then again, it wasnt part of a 10k upgrade package . It was rebuilt after the TC went out and ran fine for 750-1000 miles or so. It drove fine for about a week, then the symptoms returned. The truck was equipped with a 6. 2013-2015 Escalade, 2013 Avalanche, 2013-2014 Caprice/Silverado, 2014 SS, 2013-2015 Suburban/Tahoe, 2013-2014 Sierra all equipped with the 6L80-6L90 MYC transmission and built in Silao Mexico. 6 L8T (6L90), 2020-present Chevrolet Suburban 2500 (6L90), 2008-2013 Oct 31, 2015 · Have a 2011 6l80 with 179k. These 6L90 transmission upgrades made the 6L90 stronger, allowing it to be called a heavy-duty 6L80. If the vehicle has reached normal operating temperature after a rebuild and still exhibiting delayed engagement in forward, reverse or both, the TCM case could be warped. Early units had issues with the ring design, which lead to leaks, especially during cold operation. i started researching this issue watched allot of vids and finally pulled the pan just to have a look to see if i might be able to do it . Includes: Precision ground drop-in steel pressure regulator valve, spring and spring seat Does my Truck have a 6L90? Yes, if you have one of the following. Here's what happened. Clutch backing plate specifications were also outlined. Mar 16, 2025 · Delay is in progress Min. 1) and Transmission Input Shaft Speed reaching 0 RPMs (Pt. - For AWD applications using the 6L45/50, updated output shafts and transfer case input shafts were introduced to address grinding noises and Problem – Harsh or delayed shifts, slipping, no forward/reverse gears. 2011 2500HD. Cold, reverse apply seemed to be okay. GM has recognized this concern and responded with updated slide and rotor kits. See full list on transmissiondigest. 1 ZF6 without 053 separator plate, plus 6R60, 6R75 and ’09–’14 6R80. Nov 17, 2023 · I do have the repair manual for this specific transmission and purchased all the specials tools or made my own to do the rebuild. Related Articles – Company Profile: Freudenberg-NOK is growing its products and markets – Performance supplier listings 2025 – Ford 8F series identification guide When What is the difference between the 6L80-E and 6L90-E transmission? The 6L90 is the slightly larger brother to the 6L80-E transmission, designed to capacitate the additional torque to the other unit. truth be told, i was always more worried about being good to my allison than i am the 6l80 presently. Randomly slammed out of 4th, wouldn't upshift, and eventually I lost all gears. Now here is the problem - I reinstalled the trans and filled it full of fluid, 12 qts. Currently no codes and no CEL. New Boost Bushing 3/16 in. Feb 20, 2023 · Buy Shift Kit 6L80 6L80E 6L90 6L90E 2006-On SK 6L80: Shift Kits - Amazon. Delay or delay-bang forward, as well as delay reverse engagements; Problem – Vehicles equipped with the 6L80 or 6L90 transmission may slip when Reverse is selected or have no/delayed reverse engagement, harsh shifts from 2-3 / 4-5 or slips while in fifth, and slipping acceleration when passing. This issue makes it seem like the car is hesitating before responding to your commands. Verified it did have transmission fluid leak but not substantial enough to loss Jan 14, 2021 · The 6L80 and 6L90 transmissions have become the most popular rear-wheel drive GM transmissions in most of our shops. Feb 12, 2022 · For the last year or so I have noticed that the torque converter unlocks and locks frequently at freeway speeds. As the replacement for the 4L60E/4L80E transmissions, the 6L80 and 6L90 are used in many GM applications, including: • Cadillac STS-V, XLR-V, Escalade, Escalade ESV, Escalade EXT, and XLR • GMC Sierra, Sierra Denali, Yukon Denali, Yukon XL Denali, Apr 17, 2016 · When a GM 6L80/90 transmission finds its way into your shop with a complaint of no forward or reverse movement, or is slipping badly in all ranges, initial inspection may reveal a cracked or split sump filter (see Figure 1). I understand that this is not always the case but it Feb 3, 2024 · Delay or delay-bang forward, as well as delay reverse engagements Sonnax Zip Kit 6L45-6L90-ZIP targets the root cause of multiple complaints by sealing the support to correct a delayed engagement condition. Please discard Corporate Bulletin Number 09-07-30-004I. The measurement should never exceed past . 002” across the rotor or . If the Dec 4, 2021 · Shifted great after the temporary fix. Nov 15, 2013 · 2007 chevy 2500hd 6. 3 turbo engine and the 10R60 transmission built on or before May 19, 2020 may have a complaint of a harsh 7-6 downshift. Main Pressure Regulator Valve The 6L80 (RPO MYC), 6L90 (RPO MYD) may exhibit any of the following symptoms: • No forward or slips when moving forward • Neutrals on the 1-2 shift, then the transmission goes into 2nd gear • Possible P0756 may be set • The conditions may be intermittent in nature and may or may not have developed after a repair. Both were doing repairs: one had installed updated seals for an intermittent 2-3 flare, while the other installed an upgraded clutch pack. Jan 20, 2006 · Subject: 6L80 Automatic Transmission Delayed Engagement From PARK to DRIVE or PARK to REVERSE (Reprogram Transmission Control Module (TCM)) Model(s): 2006 Chevrolet Corvette with Transmission – Auto 6 Spd, HMD, 6L80 (RPO MYC) Condition Some customers may comment on a delayed engagement into Drive or Reverse when shifting from Park. Not enough clutches and insufficient clutch piston-to-plate apply surface area causes clutch plate failure, especially when apply pressures exceed OE specifications. When it locks, following an unlock, there is a noticeable lurching forward. Become a 6L80-E and 6L90-E expert now! Jan 25, 2023 · Hey everyone, got another problem with my 6L80. Feb 2, 2021 · Customer complaint was delay engagement in the transmission on cold morning. There is no problem with reverse. Out of nowhere. TSB 08-07-30-015 – 2002-2007 GMC Sierra 4L80E Problem – Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse Delay or delay-bang forward, as well as delay reverse engagements; Product Highlight: GM 6L45, 6L50, 6L80, 6L90 Shift Kit. The units that came out earlier had issues with the ring’s design, resulting in leaks mostly during cold operation. Solution – Rebuild or replace the valve body. Jun 19, 2019 · I'm finishing up a L92 and 6L80E swap in my buggy, and prepping for a shakedown run. So Replacing TEHCM may NOT actually be Necessary! Part 1: The Basics of the TEHCM Switch Film Problems: Mar 8, 2023 · Learn common causes and diagnostic repair tips for 6L45, 6L50, 6L80, 6L90 transmission problems like no Forward, no Reverse and the abnormal pressure condition. com/yamx786b Jul 12, 2020 · We have received many calls as of late for abnormal shifting on 6-speed transmissions. com Jan 24, 2017 · I have a 2008 GMC Sierra 2500HD 6. 3. The 6L90 also had more clutch plates, as an extra clutch plate was added to each clutch. Just started, it works in reverse and low. Other than that's Dec 28, 2014 · Delay in Reverse 2010 camaro, trying to get a little insight before i get a hold of owner says trans drive perfect and all shifting ok except when in park goes to reverse their is a delay in reverse and slight clunk then move, any insight ? would a fast learn help i believe he said trans had been build couple month ago ? thanks I do not have Sep 5, 2019 · I proceeded to rev it forward, then into reverse, rev it forward, then into reverse. I get a delayed engagement of reverse. Oct 21, 2016 · The 6L80/90E transmission consists of five clutch sets (1234, 35R, 456, 26 and LR), a planetary set, and a low clutch sprag, which provides six forward gears and reverse. If you have a GM Truck or Van with a 6-speed transmission, built after 2006, these issues are likely to affect your truck. 0 6L90E I believe, I have opened the valve body and replaced the valve balls. Aug 6, 2024 · If check ball #1 (Figures 1 and 2) is having issues, the 6L45 (RPO MYA), 6L50 (RPO MYB), 6L80 (RPO MYC), 6L90 (RPO MYD) may exhibit any of the following symptoms: No forward or slips when moving forward or falls out of gear (neutral) during operation when the transmission is cold while in first gear. First issue, when running for <10 minutes, the TC will try to lock at 55mph+ and do an erratic lock-unlock fit a couple times, then stay unlocked for another couple minutes. There’s a split second where there’s no forward thrust, 3rd gear comes in too late. TSB 08-07-30-015 – Chevrolet Express 4500 4L80E Problem – Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse Aug 7, 2024 · Delayed or Harsh Shifts: Hard or delayed shifting, particularly into 3rd or 5th gear, can be a sign of low fluid pressure, faulty solenoids, or valve body wear. Once the learn process has finished it will shift into 6th, then out and back into 6th. like all trans, service them often. Delayed engagement happens when there is a pause before the vehicle moves forward or backward after shifting into gear. The link to the handout material: https://tinyurl. Does anybody have any idea what it May 26, 2020 · It's fixed. TSB 08-07-30-015 – Chevrolet Silverado 3500 4L80E Problem: Harsh shifts, delayed 2-3 shifts, 2-3 shift flare, no 3rd gear, slips in 3rd gear or reverse. Problem is, when I put it in reverse, it goes forward. In addition, all other gears were fine and there were no trouble codes set. P-park R-Forward N-Forward D-Forward M-Forward I recently dropped and replaced the valve body to remove the TCM. Problem – Vehicles equipped with the 6L80 or 6L90 transmission may slip when Reverse is selected or have no/delayed reverse engagement, harsh shifts from 2-3 / 4-5 or slips while in fifth, and slipping acceleration when passing. TRANSMISSION IN MY 2500 HD, 6L90 is slipping. Possible DTCs include P0776, P2715 or P2723. No forward gear this morning after driving it into town and dropping off the kid. After ~5minutes of this, it finally threw a code and went into limp mode. TransGo Shift Kit vs. First is a shrunk down #1 checkball and the 2nd is a cra Problem – Harsh or delayed shifts, slipping, no forward/reverse gears. The **problem stems from Apr 15, 2016 · Quite a car. CONCERN: 6L80/6L90 (RPO MYC, MYD) applications built before June of 2010 may exhibit a slip condition related to the operation of the 1-2-3-4 clutch. Oct 1, 2012 · Related Articles – Step by step: How to test unfamiliar diagnostic codes – Inside the Audi DL382 dual clutch transmission – Identifying Chrysler RFE solenoid changes through the years Models 2006-2015 GM Passenger Cars and Trucks equipped with 6L80 or 6L90 Automatic Problem – Vehicles equipped with the 6L80 or 6L90 transmission may slip when Reverse is selected or have no/delayed reverse engagement, harsh shifts from 2-3 / 4-5 or slips while in fifth, and slipping acceleration when passing. the 6l80/90 can be a nice feeling trans at times. No leaks 69k miles. ynbuqnv xwysv zdbtaw cri whbb eumj qwpho qtvw zzhf lnews wlwb ydm skyhwc nbjlu khjgl