ATS 309-822-4440 Stage 2 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P 2WD

Features:

• Fits 2017–2019 Silverado and Sierra 2WD models
• Designed for 6.6L Duramax L5P engine applications
• Includes ATS Stage 2 LCT1000 transmission
• Comes with ATS Five Star torque converter
• Features deep transmission pan for improved cooling
• Includes ATS Co-Pilot transmission controller
• No custom tuning or reprogramming required
• Built to handle towing and high-output demands
• Improves shift quality and torque management
• Ships fully assembled and ready for install
• Ideal for heavy hauling and daily performance
• $500 shipping surcharge applied at checkout

Let Your Duramax Perform Like It Was Meant To

If you drive a 2017 to 2019 Silverado or Sierra 2500HD or 3500HD 2WD with a 6.6L L5P Duramax, you already know the power under the hood is no joke. But when your transmission can’t keep up, performance suffers, especially under load. That’s where the ATS Stage 2 Allison LCT1000 Crate Transmission Package comes in. This setup is built to turn your workhorse into a smoother, stronger, and more confident machine. With the included Five Star torque converter and deep transmission pan, you’re getting better lock-up, reduced slippage, and improved cooling where it counts. The ATS Co-Pilot controller fine-tunes your shifting for cleaner transitions and more precise response, all without needing any custom tuning. Whether you're hauling a trailer, loading down the bed, or just want more confidence when accelerating, this package delivers. It’s a serious upgrade for drivers who expect their truck to perform every time they turn the key.

Reinforced Internals Matched With Smarter Electronic Control

The ATS 309-822-4440 Stage 2 Transmission Package is designed to enhance the reliability and capability of 2017–2019 GM 2500HD and 3500HD 2WD trucks equipped with the 6.6L Duramax L5P. At the heart of the system is the proven Allison LCT1000 transmission, rebuilt with upgraded internals to manage the added stress of high torque and demanding towing cycles. The included ATS Five Star torque converter is engineered for better torque multiplication and improved lock-up performance, making acceleration under load more consistent and efficient. To manage heat and increase longevity, the deep transmission pan adds vital fluid capacity and cooling efficiency. The ATS Co-Pilot controller plays a crucial role by automatically adjusting line pressure and shift strategy to suit changing driving conditions, all without requiring any special calibration or tuning. This system ships fully assembled and ready for direct installation into your truck. It's the kind of transmission package that gives your Duramax the strength and control it should have had from the start. Perfect for long hauls, heavy loads, and everyday reliability, this upgrade gives you peace of mind with every mile.

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

Notes:

• Fits 2017–2019 Silverado and Sierra 2500HD/3500HD 2WD models
• Engineered specifically for 6.6L Duramax L5P applications
• Includes ATS Stage 2 LCT1000 transmission with upgraded internals
• Comes with ATS Five Star torque converter for improved lockup
• Includes ATS deep transmission pan for increased cooling capacity
• ATS Co-Pilot controller included for enhanced shift control
• No tuning or additional programming required upon installation
• Ideal for heavy towing, work truck applications, and performance upgrades
• Transmission ships fully assembled for easier installation
• Professional installation is recommended for optimal performance
• $500 shipping surcharge will be added at checkout