GM 6L80 Transmission Early Failure Issues & Fixes Transmission Digest


6L80 Transmission Life Expectancy You Need To Know

442 posts · Joined 2023. #1 · May 31, 2023 (Edited) 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.


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On average, the 6L80 transmission can last up to 150,000 miles or more if properly maintained. However, this number can vary depending on the vehicle's driving conditions and how well it is taken care of. For more insight, you could also check out our explainer on GM's and Chevy's 4L60E transmission problems.


Who makes the 6L80 transmission? Transmission Repair Cost Guide

Introduction The GM Hydramatic 6L80 transmission heralds a significant change in the design of automatic transmissions at General Motors. All previous GM automatic transmissions were virtually all based on hydraulic controls, and received increasing electrical elements as they modernized.


6L80 Transmission Life Expectancy How Many Miles Does It Last?

Figure 1. Getting back to the 6L80 transmission, with the years they have been on the road; we now see the types of failures for which they are susceptible. Things like converter clutch failures, output carrier lube failures, 4-5-6 clutch burnout, 4-5-6 clutch hub with the output carrier shaft snapping or twisting (caused by shift overlap.


STL010 6L80/90 2014 & Up SureCool System with Active Bypass

In this Drivetrain 101, we will be addressing: - The most popular failures we witness on the 6L90-E transmissions - Its capabilities in reference to TCM tuning and shift/lockup protocol modification - The strengths (believe it or not, there are a few!) of this transmission - Resources for relevant updates and upgrades And much, much more!


6L80 Transmission Life Expectancy Tips To Maximize It

While nearly identical, the 6l80 is a slightly smaller transmission, with a total weight of around 195 pounds dry and 23.4″ in length. In comparison, the 6l90 transmission is about 1.5″ longer. 6l80 and 6l90 Transmission Fluid Type and Capacity. Both the 6L80 and 6l90 transmissions requires around 13.5 quarts of transmission empty.


“Higher life expectancy Dissecting its common misconception” 'Focus

Similar to some other transmissions, the 6L80/90 may use a cooler bypass valve to improve transmission warm-up (figure 7). As with other manufacturers, the GM cooler bypass valve can fail. In this application, the 456 clutch will typically fail due to overheating. Replace or bypass the valve will address the issue.


GM 6L80 E Transmission No Forward No Trouble Codes Transmission

The typical transmission life expectancy for a 6L80 is around 150,000 miles. This means that on average, the 6L80 should last around 150,000 miles before needing to be replaced. Factors that can affect the life expectancy of transmission include regular maintenance and proper care.


Bad Habits That Affect The Transmission Life Expectancy

The 6L80E is the only transmission in Chevrolet's lineup of gearboxes that places the transmission controller in the oil pan where it is subject to high oil temperatures if abused. The later eight- and 10-speed gearboxes moved the ECU back out of the transmission and the six-speed is essentially its own design—completely different from all previous and subsequent transmissions.


6L80 Transmission Life Expectancy [All You Need To Know] CarsTopics

2. Location. ct. Mar 1, 2016. #1. I have a 2010 Silverado 5.3 with the 6l80 with 65000 miles and original fluid to my knowledge. I will be replacing the pan with a PML deep pan which will add about two quarts to the capacity and changing the filter, refilling, and adding a bottle of lubegard red. I have a couple questions though, I do want to.


Properly Diagnose 6L80 Automatic Transmission Issues

Our high-performance transmissions —including GM 6L80 (level 1 and 2) and GL90 — are built to the horsepower, torque, and rear gear ratio specs of the engine that it will be matched to. Also featuring a torque converter, the transmissions come with a complete master overhaul kit with new gaskets, seals, rings, and pistons.


GM 6L80 Transmission Early Failure Issues & Fixes Transmission Digest

October 13, 2023 1,558 Views 9 Min Read By now, most major shops have had enough exposure to 6L80 transmissions to realize that they will be around for quite some time, providing plenty of work. Patterned failures for this unit have been covered in previous editions of GEARS magazine, but there is more to let you know!


6L80 Transmission Life Expectancy You Need To Know

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.


CVT Transmission Life Expectancy What You Need to Know

Anybody have experience with the 6 speed transmissions in the last generation (c. 2011) Chevy Tahoe? No issues currently but its approaching 100k and I know a lot of people end up needing a replacement. As of now my plan is annual fluid changes and hoping for the best.


CVT Transmission Life Expectancy 🏎️ How Long Do They Last?

Though the 6L80 transmission is built to last, especially the 4×4 version, there are still a few things you can do to help extend its life expectancy. First, be sure to change the fluid regularly. Old, dirty fluid can cause the gears to grind and wear down prematurely. Second, avoid excessive heat whenever possible.


6L80 Transmission Rebuild Parts Raybestos Powertrain

The 6L80 transmission typically has a service life of approximately 150,000 miles. Proper care and regular maintenance play vital roles in improving its longevity. It indicates that, on average, the 6L80s should last about 150,000 miles before needing to be changed.