6l80e transmission problems. 45RFE 545RFE 65RFE Transmission Master Rebuild Kit with 4WD Filter Friction Kit. How many of you use special tools for this job and which ones are useful? Thanks for input Got a 2020 Silverado 1500 with the 4. Shop a wide range of custom-built transmissions, rebuild kits, and components designed to maximize power, reliability, and performance for all vehicle types. Use a high quality Trans fluid like So it lost reverse and will drive in n and drive. I changed a 6L90 at my regular job (fleet of mostly Express 3500 vans) in a 2016 Express with just under 130,000 miles on it. This guide will go through some of the GM 6L80 problems in detail along with some of the fixes. Dec 14, 2024 · Hi all, as everyone knows GM has had a range of troublesome transmissions with problems that ranged from shuddering, slipping, hard shift, delayed shift, downshift bumps, etc. Communication is the best way to solve the problem. Lost all gears, including Amazon. Since then, it has become one of the most commonly repaired transmissions in shops across the country. I keep getting P2160 code, indicating a "Vehicle Speed Sensor 'B' Never Buy a 2007-2023 GM Truck Equiped with the 6L80e Transmission! #junk #transmission #6l80e 25K Dislike 6,106 In 6L80, 6L90 units, an inherent torque converter problem might be the root cause of a lot of the transmission failures. Upgrade your transmission with a high-performance 6l80 torque converter for improved durability, heat management, torque multiplication, and smoother shifting. Thanks！ 6L90 6L90E 6L80 6L80E Transmission Master Rebuild KIT 06-UP W/ Gaskets Friction Note: 1. Find An [Reference Part Number]6L80,6L80E. Here is a summary just for you. It was General Motors’ first fully electronically controlled heavy duty transmission. The **problem stems from The 6L80E transmission has been used in everything from pickup trucks to Corvettes. Become a 6L80-E and 6L90-E expert now! The good news is that we here at Tier One offer 6L80 and 6L90 rebuild services and a full lineup of built 6L80 and 6L90 transmissions that fix these common problems so that your Silverado1500 Common 6L80E transmission problems like slipping, overheating, and solenoid failure. Nov 28, 2025 · The 6L80 transmission has a reputation—and not the good kind. Here’s how to stay ahead of the failure curve. Sonnax has the answer. Here's what not to miss. He laughed and said don't believe what you see on the internet. Apr 3, 2025 · Explore common Chevy 6L80 transmission problems, their causes, recall campaigns, and essential facts for informed ownership. The entire transmission could experience catastrophic internal damage At this point, you are probably wondering what all the different symptoms and transmission applications have in common. 3L Gen 5 engine. May 31, 2022 · However, some design flaws of the GM 6L80 led to various transmission issues which have been presenting themselves over the last 5 years or so. Discover the complete history of the 6L80E transmission and learn about its most common problems. 6K views 19 replies 4 participants last post by NickTransmissions Apr 9, 2025 Save Your 2007-2018 GM Truck Transmission! Equipped With The 6L80e #tipsandtricks #mechanic #cars 7. The good news is that these transmissions have come through our shop 1000s of times, so we are able to fix the root causes before they cause catastrophic failure. Discover common GM 6L80 transmission problems and their fixes in this comprehensive guide and learn how to address issues like TCC failures. Become a 6L80-E transmission expert now! Transmission Model: 6L90 6L90E 6L80 6L80E. it started slipping from a dead stop. It’s bolted to the 6L80 / 6L90 valve body, and can be found in vehicles like the Chevy Camaro 6L80, Chevrolet Silverado 1500 6L80 / 6L90, GMC Sierra 3500 6L90, Chevy Suburban Got a 2016 WN SII Caprice which has the 6 speed auto. I took it to the transmission shop Tuesday morning, explained my symptoms, mentioned possibility of check ball as seen on internet from 3 different transmission shops. Just the sheer number of vehicles built with these transmissions is mind-boggling, as millions and millions are on the road today. A few days ago a buzzing noise started, trying to figure out what it is. Has anyone noticed a rash of failed 6L80 and 6L90 transmission? I was under the impression they were pretty solid units but now I’m not so sure. In this Drivetrain 101, we’ll analyze all of its most prolific problems, solutions and upgrades. Some of its unique features included direct clutch-to-clutch shifting and an advanced computer controller built into the valve body. If you tow/haul frequently, or nee General Motors has also issued broader recalls for transmission issues in later model vehicles, though many 6L80/6L90 problems have been addressed through service bulletins rather than full recalls. 1K Dislike 628 Hi All, Since so many of us own at least one Tahoe or Yukon equipped with a 6L80, I figured I'd start an all-encompassing transmission thread with videos, links and other information as it relates to the 6L80/90 transmissions. Check ball #1 had shrunk and stuck in the separator plate. [MATERIAL]This Transmission valve body is made of high quality material to Improve reliability and durability,corrosion-resistant,wear resistant which is not easy to damage. com: sonnax transmission parts 124740-TL30 Pressure Switch Installation Tool Kit Works with F/124740-30K, Perfectly Fits for GM Transmissions 6L45 6L50 6L80 6L90 & 1st Gen 6T70 6T75 HOW TO fix a Transmission Shudder on The 6l80 - 6l90 Torque converter (follow up GoPro) Chevrolet GM Codemans auto 118K subscribers Subscribe. i. I'll get it going with a tear down and inspection video and go from Find a good reputable transmission builder that knows the 6l80 specifically (they exist), have one built for you with upgraded clutch packs, stronger than normal/OE parts, no thermal bypass valve so it runs cooler, and a billet torque converter at stock stall speed and call it a day. However, you can verify mainline pressure versus actual command. the bill was $3800. In simple terms, the 6L50, 6L80, 6L90, 6T70, 6T75, 6T80 all use the same design TEHCM. Jk 6l80 205 twin stick Definitely not finished but everything is roughed in any suggestions on a shifter for the lokar trans shifter Silverado Tahoe Transmission Part 6L80 6L80E 6L90 6L90E Control Valve Body To Solenod Gasket Flter 6l80 Transmission Master Rebuild Kit About This Product Remanufactured 6L80 / 6L90 Valve Body vs. The 6L80E transmission is known to have its fair share of transmission problems. It's located at the end of the transmission cooler lines where they connect to the trans. I have no harsh shifting, no shuddering and it’s not 6L80E TRANSMISSION PROBLEMS, CAUSES & FIXES | Looking at a 07 Denali 6L80E TRANSMISSION PROBLEMS, CAUSES & FIXES 󰞋 Public group 󰞋 Monster Transmission is your trusted source for high-performance transmissions and parts. Under moderate acceleration around bends when transmission goes to upshift sometimes the revs go up but gear doesn’t engage. Find out how to fix these issues and upgrade for better performance. It has the 6 speed auto but how widespread is the… 6l80E shifting problems 2014-2015 6l80 transmission Jump to Latest 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. This vital doughnut shaped component is responsible for transmitting power from the engine to the transmission. y. 2020 Chevy Suburban w/ 110,000 miles Before tear down issues: progressive slipping/flares from drive. Experience unmatched quality and expert support at Monster Transmission. Aug 27, 2025 · 6L80 giving you problems? This ultimate guide reveals the most common failures, how Monster fixes them, install steps, and when a reman beats a rebuild. 12/ 12 warranty. Got a GM 6L80 transmission trouble? Learn about common issues and how to fix them with Haynes Manuals! From clutch problems to valve wear, we've got you cove This video details a common issue with the 6L80E transmission, particularly in Chevrolet and GMC trucks with the 5. 2. A code finally popped up with a p2723. Discover the costs, common issues, and insights on GM 6L80E transmission problems, backed by statistics and customer reviews. 3. In an effort to consolidate multiple transmission parts into a single unit, the 6L80 / 6L90 TEHCM combines the functions of the TCM (transmission control module), solenoids, pressure switches and temperature sensors. Rebuilt or Used Reman vs Rebuilt 6L80 Valve Body? Both are good options but the best option for you depends on the transmission problem, the year, make and model of vehicle, the mileage and the Transmissions Stock Transmissions Custom Transmissions Performance Transmissions Featured Transmissions Replacement Transfer Cases Transmission Coolers Reman Transmissions FAQ The Jasper Process Why Jasper Transmissions RAP®2 Program Value-Oriented Products & Superior Customer Service JASPER is committed to helping you succeed. Use one of the quick links to take action today. And obviously there is a reason that causes this to happen but is there an in depth reasoning as to why each problem occurs? Chevy and GMC trucks with 6L80E or 6L90E transmissions are known for common issues. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Watch the full 6L80 and 6L90 Transmission Teardown and Repair Video (Or read more about it below the video. 0l with a 3000 stall, under half throttle (holding it there) once it gets between 2500 and 3000rpm it splutters and pops but after that it rockets off. This guide cuts through the noise to show you what’s actually failing, why it happens, and what you can do about it. Maintenance is the key, You should do a d. Common 6L80E transmission problems like slipping, overheating, and solenoid failure. The trans was completely rebuilt lines and cooler flushed new torque converter etc. The 6L series of transmission was introduced starting in the 2006 model year. Please allow minor deviation due to manual measurement. Remove and replace your Thermal transmission valve. The problem was a transmission valve body check ball. I lift off for a second, gear engages three I carry on. My 2014 6l80 4wd transmission went bad at 165,000 miles. In park it feels like it’s trying to move forward as well. Able to engage and drive after a period of cool down. The General Motors 6L80-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. I'll get it going with a tear Discover common GM 6L80 transmission problems, repair costs, and insights from users to help you make informed maintenance decisions. 3 and 67k on the clock. Engine Rebuild Kit. Data log is saying I’m seeing several specialty tools used to rebuild the 6L80. 6L80E Transmission Problems & Solutions Reverse Fails to Engage – If you’ve selected Reverse and your vehicle still won’t move, then it’s possible the park prawl (the metal piece that stops your vehicle from rolling), or one of the clutches has become damaged. transmission flush every 35,000 miles or so, go to YouTube for a d. It was still moving in forward and reverse when it was towed to a local reputable transmission specialist. The same week, in my I’m currently looking at buying a 2017 Silverado 4wd crew cab with the 5. Just confused on what it could be. Over its lifetime, the GM 6L80 automatic transmission has typical failures. 3L V6/6L80 combination in it. 6L90 6L90E 6L80 6L80E. The Problem Suddenly, you have no forward gears in your vehicle. transmission flush. ) In 6L80, 6L90 units, an inherent torque converter problem might be the root cause of a lot of the transmission failures. If one darkens your Hi All, I'm brand new here but active on other GM forums where the 6L transmissions are actively being discussed so figured I'd start a similar all-encompassing transmission thread with videos, links and other information as it relates to the 6L80/90 transmissions. 2K Dislike 209 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. For more information, make sure to check out our I've been having all sorts of crazy shift pattern problems with my new 6L80e transmission. Let me explain before you get upset and rip this page out of the magazine. Fix it before this happens!!! Learn the common FAILURES in your 6l80e transmission It’s a terrible thing, but happens a lot. Terry H Bennett Sharp truck. No signs of transmission issues before this. Hope everyone enjoys thanks f GM 6L80E/6L90E Transmission Problems And Performance Upgrades Offered By Gearstar 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. Chevrolet 6-Speed most common issue #6L80 #chevrolet #mechanic #shorts #transmission #gmc #cadillac 3. GM transmission owners listen up - if you're dealing with erratic shifts, pressure loss, or burnt frictions in your 6L80, 6L45, 6L50, or 6L90 transmission, this TransGo valve body end plug kit is probably exactly what you need. This gearbox was designed to handle the torque output of some of GM’s biggest V-8 engines If you have a GM Truck or Van with a 6-speed transmission, built after 2006, these issues are likely to affect your truck. One of the most common is the premature failure of the 6L80 torque converter. Noticed predominantly after driving for a period of time and warmed up. Jul 7, 2025 · This transmission gives early warnings, and with the right moves, you can stretch its life by tens of thousands of miles. I read a list that said my 2010 Sierra had a 4L60E but it is in fact the 6L80E - if you have 6 gears, you almost definitely have this transmission on a 1500 truck from this era (the heavy duty trucks have a 6L90E). Most commonly noticed on negative camber roundabouts or John Parmenter, Precision International Tech Advisor goes over resolving problems on the 6L80 transmission. Is your 6L80E running hot? Learn the common causes of transmission overheating, how to prevent damage, and which upgrades can keep your 6L80E running cool and strong. If it fails, not only will there be drivability issues. Whether you're a car enthusiast or a professional mechanic, Learn common causes and diagnostic repair tips for 6L45, 6L50, 6L80, 6L90 transmission problems like no Forward, no Reverse and the abnormal pressure condition. I’ve called around places and being told 6l80e behind a cammed 6. Learn the top 5 signs of failure and when to upgrade to a built unit for towing and performance. Once you remove the transmission, you are in resolution mode! Determining control-related issues versus a transmission performance problem is difficult since this unit does not offer the ability to back probe electrical circuits to verify proper operation and commands. Type: Transmission Master Rebuild Kit. uld56, uhwy, kwyf5z, frsav, zfhk, yavv, npyvu, fcjju, k3usz2, ials,