ATS 309-812-4440 Stage 1 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P 2WD

Features:

• Includes ATS Stage 1 performance transmission
• Built for 2017–2019 Duramax L5P 2WD trucks
• Comes with ATS Five Star torque converter
• Includes ATS deep transmission pan
• Improves reliability under towing and heavy loads
• Supports stock to mild performance upgrades
• Upgraded internals for better torque handling
• Deep pan increases transmission fluid capacity
• Helps reduce transmission temperatures under stress
• Designed to enhance shift quality and drivability
• Built and tested in the USA by ATS Diesel
• Professional installation is highly recommended

Build A Better Foundation For Your L5P Power

When you are leaning on your L5P Duramax for towing, hauling, or putting down extra power, you need a transmission that is up for the task. The ATS Stage 1 Allison LCT1000 Crate Transmission gives your 2017–2019 2WD Silverado or Sierra a serious upgrade in strength, drivability, and durability. With the included Five Star torque converter and deep transmission pan, this package is built to handle more heat, more load, and more power than your stock setup ever could. Whether you are pulling a heavy trailer across the state or just want to protect your investment after installing a tune, this transmission delivers peace of mind and consistent performance. It is designed to keep your shifts smooth, your power planted, and your truck ready for whatever the road throws at it. You get real performance gains without sacrificing everyday comfort or reliability. If your truck works hard, your transmission should work even harder to keep up.

Strengthened Internals And Smarter Cooling For Demanding Use

The ATS 309-812-4440 Stage 1 Crate Transmission is engineered to improve the performance and reliability of 2017–2019 GM 2500HD and 3500HD trucks equipped with the 6.6L Duramax L5P and two-wheel drive. At the core of this package is the enhanced Allison LCT1000 transmission, which features upgraded internal components built to handle higher torque loads from towing or light modifications. The included ATS Five Star torque converter improves torque multiplication and minimizes slippage under heavy load conditions, making a noticeable difference in throttle response and towing stability. To help maintain optimal operating temperatures, the ATS deep transmission pan increases fluid capacity and improves heat dissipation. This transmission package is ideal for drivers who expect more from their trucks without needing a full race build. Whether you use your Duramax for work, recreation, or light performance applications, this setup provides a solid foundation for power and longevity. As always, every transmission is built and tested by ATS Diesel right here in the USA for proven dependability.

Fits: 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P 2WD

Notes:

• Designed specifically for 2017–2019 GM 2500HD and 3500HD trucks with 6.6L Duramax L5P engines and 2WD configuration.
• Includes ATS Stage 1 transmission, Five Star torque converter, and ATS deep transmission pan.
• Recommended for stock to mildly tuned trucks used for towing, hauling, or daily driving.
• Not intended for extreme performance or race applications.
• Professional installation is strongly recommended for correct setup and warranty support.
• Upgraded torque converter improves towing performance and reduces slippage.
• Deep transmission pan increases fluid capacity and helps lower transmission temperatures.
• Transmission may shift firmer than stock depending on driving conditions and load.
• Built and tested in the USA by ATS Diesel for proven quality and reliability.
• $500 shipping surcharge will be added at checkout and is not included in the listed product price.