Description
ATS - T87 TCM Upgrade for A50 T14 2011 - 2015 6.6L GM Duramax LCT1000 Transmission — 2011-2014 / 2WD
The A50 Chevy 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. This effectively left over 10,000 Duramax owners out of their trucks. Some of the warning signs of a failing TCM are messages including “Service Brake System”, “Stabilitrak Service Required”, “Range Shift Inhibited”, “Service Brake System”. 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 ATS T87 Conversion now provides a much more aggressive factory exhaust brake over the factory A50/T14 TCM. We were able to increase the exhaust braking ability in two areas. First off, we enabled all of the additional tables that the T87 offers that are designed to operate the standard exhaust brake function and the Tow Haul exhaust brake function, these two tables are specifically designed to manage the exhaust brake and provide an aggressive down shift schedule. Secondly, we are able to command the ECM to use the full exhaust braking function of the ECM, the factory A50/T14 TCM limits this ECM from commanding the full exhaust brake. When the ATS T87-Translator upgrade is installed, we enable the ECM to apply the full exhaust braking effort the engine has available. The combination of the T87, custom TCM calibration and Translator module maximizes the Transmission and Engine/Turbo exhaust brake to provide the most aggressive exhaust braking yet! This function not only provides a safer level of driving, but it gives superior engine braking reduction with heavy loads.
Product details
- 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
- Increases throttle response
- Fuel economy and MPG improvement
- Updated shift points to keep the engine within desired RPM range
- Better torque converter lock-up response
Fitment / application
ATS - T87 TCM Upgrade for A50 T14 2011 - 2015 6.6L GM Duramax LCT1000 Transmission; selected configuration: 2011-2014 / 2WD
Selected manufacturer configuration: 2011-2014 / 2WD.
Confirm year, engine, transmission or axle configuration before ordering.
Manufacturer product reference: Specifications and fitment.
