ATS 601-924-4368 Allison Co-Pilot Transmission Controller | 2011-2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Features:

• Fits 2011-2015 GM 2500HD and 3500HD
• Compatible with 6.6L Duramax LML engines
• Designed for 6-speed Allison 1000 transmissions
• Controls transmission pressure intelligently
• Manages torque converter clutch lockup
• Uses boost pressure for dynamic tuning
• Adjusts based on vehicle speed and throttle
• Improves drivability and shift performance
• Helps reduce transmission slippage
• Enhances towing and heavy load handling
• ATS 24-pin Co-Pilot design for secure fit
• Plug and play installation for convenience

Give Your Allison The Support It Deserves

If you're pushing your Duramax-powered truck with added power or heavy towing, your stock transmission is working overtime trying to keep up. The ATS Co-Pilot Transmission Controller steps in to give your Allison 1000 the backup it needs. This smart unit reads critical data like throttle position, boost pressure, and vehicle speed, then adjusts transmission pressure and torque converter clutch engagement on the fly. That means cleaner shifts, more efficient lockup, and better control when it matters most. Whether you're pulling a trailer up steep grades or hammering down the highway with extra horsepower, this Co-Pilot brings confidence back to your setup. It helps preserve your transmission and gives you noticeably improved drivability across the board. Just plug it in, mount it, and feel the difference in every shift.

Precise Control For Better Performance And Longevity

Technically speaking, the ATS 24-pin Co-Pilot system is engineered to optimize transmission behavior under changing load conditions. It intercepts signals from the MAP, TPS, and VSS sensors to dynamically adjust line pressure and torque converter lockup timing. This gives your Allison 1000 the ability to hold power more effectively without unnecessary slippage or delayed engagement. It’s especially valuable for tuned or modified trucks that put extra strain on factory transmission calibration. The result is not only smoother operation but reduced heat buildup and wear on internal components over time. Designed for 2011-2015 GM 2500HD and 3500HD trucks with the 6.6L Duramax engine, this controller integrates cleanly into existing harnesses and requires no cutting or complex wiring. It’s a smart safeguard for anyone serious about reliability and performance.

Fits: 2011, 2012, 2013, 2014, 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Designed for 2011-2015 GM 2500HD and 3500HD trucks with 6.6L Duramax engines
• Compatible with 6-speed Allison 1000 transmissions only
• Controls transmission pressure and torque converter clutch lock-up
• Operates based on MAP (boost), VSS (vehicle speed), and TPS (throttle position)
• Ideal for trucks with performance tuning or towing demands
• Reduces transmission slippage and improves shift quality
• Helps extend transmission life under heavy load conditions
• Integrates seamlessly with factory wiring using a 24-pin connection
• Not intended for use with non-Allison or older 5-speed transmissions
• Professional installation is recommended for optimal results