There is a lot of good AND a lot of bad, so we have divided this into multiple sections. If there is one Achilles’ Heel to this transmission, it is the dismally inferior OEM torque converter. Problem #1 - The Torque Converter Lockup Mechanism The strengths (believe it or not, there are a few!) of this transmission Its capabilities (or lack there of) in reference to TCM tuning and shift/lockup protocol modification The most popular failures we witness on the Allison 10L1000 transmission In this Drivetrain 101, we will be addressing: Top 5 Ways to Extend the Life of a Factory Transmission Calculating Torque Multiplication Factor, Why is it So Important? Top 5 Benefits of an Upgraded or Built Transmission Popular Transmission Information Resources: That stated, and without further ado, we will address the most prolific problems, solutions and upgrades available for the new Allison 10 Speed 10L1000 Transmissions. In fact, we compiled all of this data into our version of the 10L1000, seen below. Though this is generally a “good” transmission, it does have a fair number of easy to address problems that simply require some data analysis and technical understanding. In fact, this transmissions internal components are largely interchangeable with those of the Ford, the parent engineer of this product. One thing that should be noted about the Allison 10L1000 is that this transmission is a fraternal twin of the Ford TorqShift 10 Speed 10R140. In fact, it has the highest relative torque capacity of any transmission released in this class to date, far exceeding competitors such as the AS69RC or 6R140. *Pro-Tip* - Looking for a safe tuning module and digital gauge monitor for your L5P DuraMax that supports custom tuning for your Allison 10L1000 Truck? Use discount code “ CTS3FORME” at checkout for free shipping on a high quality Edge Insight CTS3 Monitor, our recommended monitor for the DuraMax GMC Sierra and Chevrolet Silverado! You can learn more about the 2001 through 2019 Allison 1000 Transmission by reading our Drivetrain 101 on the 5 & 6 Speed Allison 1000/2000 Series Transmission. It is the successor to the 6 Speed Allison 1000 Transmission, whose tenure began in 2001 with the LB7 DuraMax and ended in 2019 under the L5P years. This transmission is easily the most robust, well engineered and dynamic transmission to be paired behind the DuraMax series trucks to date. To get straight to the point, the Allison 10 Speed 10L1000 was released for the 2020 model year in General Motors heavy duty Silverado and Sierra trucks and is currently in use today. Introduction to the Allison 10L1000 Transmission: Conclusion to the Allison 10L1000 Transmission Problem #6 - The High Pressure Oil Pump Problem #3 - Functional Issues Caused by Added Power Problem #1 - The Torque Converter Lockup Mechanism In this Drivetrain 101, we will be addressing Popular Transmission Information Resources Other aftermarket lines have not been verified to fit.- Introduction to the Allison 10L1000 Transmission Fitment has only been verified with aftermarket Fleece and Deviant lines.We recommend using Transynd Transmission Fluid When replacing the transmission cooler, you will lose about 1-2 quarts of transmission fluid.This will insure transmission efficiency and longevity. We highly recommend our new Arctic transmission cooler anytime you rebuild or upgrade your transmission. Over time the stock torque converter and internal clutch material can plug your trans cooler and reduce its cooling capabilities. Tech Tip: Does your truck have higher mileage and higher than normal transmission temps? It's probably time to freshen up the Transmission cooler. 1 - High Flow Arctic replacement Allison transmission cooler.Not only will this cool better but it will last longer as well with a high quality powder coated exterior to prevent corrosion you will be able to run this cooler on your truck for many miles without issue. The DmaxStore cooler is a much heavier duty unit than the stock and has an increased cooling efficiency. The DmaxStore Arctic High Flow Transmission cooler is much bigger than the stock unit, 56% thicker and 53% taller. If your transmission temperatures are starting to creep up on your truck this is the best way to fix that problem. The DmaxStore Arctic High Flow Allison Transmission Cooler is purpose built to keep your stock or built transmission running cooler than before, with 15 more rows than the stock cooler your transmission will stay cool. Max-Flow Arctic Allison Transmission Cooler, 2001-2005 GM 6.6L Duramax
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