Skip to main content

ATS 601-904-4308 Allison 6-Speed Conversion Co-Pilot Transmission Controller | 2006-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

ATS Diesel Performance

$1,175.00
(No reviews yet) Write a Review
SKU:
ATS601-904-4308
Adding to cart… The item has been added
Features: - Advanced Co-Pilot transmission controller for Allison 6-speed conversions - Designed for 2006–2024 GM Duramax 6.6L applications - Enables full control and optimization of the Allison transmission shift strategy - Improves drivability, shift quality, and transmission durability - Supports higher horsepower builds and aggressive tuning - Includes wiring harness, control module, and installation hardware The ATS 601-904-4308 Allison 6-Speed Conversion Co-Pilot is the ultimate controller for GM Duramax owners upgrading or modifying their Allison transmissions. Whether you're converting a 5-speed to a 6-speed or enhancing shift logic in a tuned truck, this unit provides superior control over line pressure, torque converter lockup, and gear selection. Built for towing and high-performance use, the Co-Pilot ensures your transmission operates safely and efficiently even under heavy loads or boosted power levels. Fitment: 2006–2024 GM Silverado / Sierra 2500HD / 3500HD 6.6L Duramax Warranty: 5-year limited warranty from ATS Diesel Fitment Notes: Compatible with 6-speed Allison transmissions. Custom tuning recommended for best performance. Not required for stock transmissions. Professional installation and calibration recommended.