Name: ATS Diesel TCM Upgrade A40/A50 to T87A Duramax GM 6.6L 2011-2014
Brand: ATS Diesel
SKU: 156285007
Price: 2950.00 USD

ATS TCM Upgrade, A40 / A50 to T87A for 2011- Early 2015 GM 6.6L Duramax. The A40 and A50 TCM that is used to control the Allison 6-speed automatic transmission is the weak link of the Allison transmission. This is due to delicate thin wires inside the TCM that contact one another overtime and short-out the entire module.

In 2022, Allison sent out a letter (SIL 15-1K2K-22) announcing the discontinuation of support for the A50 and A40. This effectively left over 10,000 Duramax owners out of their trucks. So we got to work developing a solution utilizing our Translator technology found in the ATS Allison Conversion to help get these trucks back on the road, shifting and holding power even better than before, ASAP!

The A50 and A40 TCM have been used in all GM Duramax/Allison Diesel Trucks produced from 2006 to 2017. ATS is excited to release the new GM Allison T87A upgraded TCM module. The upgraded TCM comes in an assembly including our Translator module that also has our Co-Pilot transmission functions built in.

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.
Found on the current 2023 Duramax, the T87a TCM has a much faster processor than the A50 and that equates to better shift quality, faster shifting and overall improved drivability.
Direct Replacement for AC Delco: TCM 24256861 25978353 15117030

Includes:

New T87a TCM that is unlocked and has a custom ATS calibration pre-installed that optimizes the performance of the Allison transmission.
New Translator module that has the Co-Pilot transmission pressure function enhancements built in. The Co-Pilot functionality allows the factory Allison transmission to handle higher power levels and much better durability.
Mounting Bracket
Wiring Harness

Proposition 65

$/!\ warning$ WARNING: Cancer and Reproductive Harm

https://www.P65Warnings.ca.gov

Who is ATS Diesel?

ATS Diesel is a company that specializes in producing performance parts for diesel-powered vehicles. It was founded in 1993 and has been serving enthusiasts, hobbyists and racers everywhere for almost three decades.

The company focuses on this specific automotive industry market, which includes pickup, SUVs, and Jeeps. Today, they are known as the go-to shop of various diesel owners that want to improve their vehicle.

Diesel Engine Experts

ATS Diesel offers a variety of products ranging from transmission parts, torque converters, intake systems, and other high-performance diesel parts. It has given diesel owners the ability to enjoy and maximize the full potential of their vehicles.

They have all the parts for your diesel engine and transmission. It will ensure years of confidence in your truck in the most demanding environments.

The company produces products that are up to date with today’s automotive trends. All their parts are designed and manufactured in the USA. It allows them to control their product quality and create an offering that performs.

Purchase ATS Diesel Products At Vivid Racing

Diesel engine technology has improved over the years. If you want the best for your diesel-powered vehicle, then ATS Diesel is the right brand for you. They have the most comprehensive parts lineup for diesel engines out there and are proven to work by many diesel owners all around.

To know more about ATS Diesel, visit Vivid Racing and check out their list of parts that would fit your specific needs.