Merchant Automotive Allison 1000 Allison Tune

High-performance Allison transmission tune for the Allison 1000 transmission in Duramax diesel trucks. Engineered by Merchant Automotive with custom TCM calibration to handle increased power from performance tunes, turbo upgrades, and heavy towing applications. The Allison 1000 is a strong platform that responds well to quality performance upgrades.

Designed for 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD. Merchant Automotive is a trusted name in Duramax and Allison performance, providing proven components used by diesel performance enthusiasts and commercial operators nationwide.