ATS 309-815-4440 Stage 1 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P PTO 4WD

Features:

• Built for 2017-2019 GM L5P Duramax
• Fits Silverado and Sierra 2500HD and 3500HD
• Designed for 4WD with PTO applications
• Includes ATS Five Star torque converter
• Comes with deep transmission pan upgrade
• Improved torque handling over stock units
• Optimized for performance and durability
• Ideal for towing and heavy-duty use
• Direct replacement for LCT1000 transmission
• Reduces heat and increases transmission life
• Precision engineered for smoother shifting
• $500 shipping surcharge applies at checkout

Take Your Duramax From Workhorse To Warrior

If you're putting serious work into your 2017-2019 Duramax, then your transmission should be just as tough as the jobs you take on. The ATS Stage 1 LCT1000 Crate Transmission is purpose-built to handle the high demands of towing, hauling, and everyday abuse that comes with a 4WD setup. Whether you're pulling a trailer through the mountains or stacking up mileage on the highway, this transmission package offers a noticeable difference in durability and control. With the included ATS Five Star Torque Converter, you're getting maximum torque transfer right when you need it, while the upgraded deep transmission pan keeps things running cooler even under heavy load. You’ll notice smoother shifts, reduced lag, and less heat-related wear, which all add up to long-term reliability. If you’re serious about performance and peace of mind, upgrading to this transmission means fewer repairs, less downtime, and more time getting the job done. It's not just a replacement, it's an investment in your truck's future.

Built With Precision For Demanding Applications

The ATS Stage 1 Allison LCT1000 Crate Transmission package is engineered for 2017-2019 GM Silverado and Sierra 2500HD or 3500HD trucks equipped with the 6.6L L5P Duramax and 4WD with PTO. This complete setup includes the performance-built LCT1000 transmission, a five-star torque converter, and a deep transmission pan designed to improve fluid capacity and cooling efficiency. Each component is manufactured to tighter tolerances than stock, reducing internal slippage and improving shift consistency. The torque converter is specifically matched to the powerband of the L5P, ensuring torque delivery is both efficient and reliable under various load conditions. The transmission pan not only increases fluid volume but also helps manage heat, which is critical for preserving clutch life and preventing failure. This kit is ideal for fleet use, heavy-duty work, and performance applications where consistent power delivery and transmission stability are a must. It's a direct fit upgrade with big performance benefits that serious truck owners will appreciate.

Fits: 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P PTO 4WD

Notes:

• Fits 2017-2019 GM 2500HD/3500HD with 6.6L L5P Duramax
• Designed for 4WD models equipped with PTO
• Includes ATS Five Star Torque Converter for better torque delivery
• Comes with deep transmission pan for improved cooling
• Built as a Stage 1 upgrade over stock transmission
• Ideal for towing, work, and moderate performance applications
• Not designed for extreme competition or race use
• Transmission is built for durability under higher stress loads
• Helps prevent overheating and slippage under heavy use
• Professional installation strongly recommended
• $500 shipping surcharge added at checkout