ATS TCM Upgrade A40 / A50 to T87A for Chevy/GMC (Early 2015) 6.6L Duramax

The ATS TCM Upgrade, A40 / A50 to T87A, Early 2015 GM 6.6L Duramax gives you better control over how the transmission in 2015 6.6L Duramax shifts and locks up. Electronic upgrades like this are the simplest way to fix soft shifts and lockup behavior that the factory programming does not handle well once a truck is modified.

ATS Diesel Performance has built diesel transmissions and performance parts since 1993. ATS designs, engineers, and manufactures most of its products in-house at its Arvada, Colorado facility, and tests them at altitude on the same long grades its customers tow on.

Specifications

• Part Number: 601-940-4416
• Product Type: Transmission Control Module
• Engine: 6.6L Duramax
• Years: 2015
• Sold As: Kit
• Warranty: 5-Year/500,000 Mile Limited
• Country of Origin: USA

What's Included

• New T87a TCM that is unlocked and has a custom ATS calibration pre-installed that optimizes the performance of the Allison transmission.

Features

• Works with stock or modified trucks.
• Controls and increases line pressure.
• Direct replacement, no permanent modifications required - plug and play OEM quality harness and module.

Resources

• ATS product video