Synapse Auto Remanufactured Allison Transmission Control Module (TCM) 09-15 GM 6.6L Duramax Select Model Year:2009-2010 delivering increased horsepower and torque

delivering increased horsepower and torque without sacrificing reliability

NOTE: Add on 1050470-SB pulley kit required for 2011 single/dual alternator and 2012-2016 dual alternator

we recommend further transmission modifications or a complete BD performance Allison transmission and converter

a vehicle's cooling system becomes highly pressurized

Synapse Auto Remanufactured Allison Transmission Control Module (TCM) 09-15 GM 6.6L Duramax Select Model Year:2009-2010 delivering increased horsepower and torqueOver time, the factory TCM (Transmission Control Module) that controls the Allison transmission behind your Duramax engine is known to fail. Symptoms of this type of failure include losing the "PRNDL" display on your dash, check engine lights, and even limp mode. This is a direct replacement, pre programmed TCM from the electronics experts at Synapse Auto that plugs right in place of your stock unit for a simple repair. If you're experiencing any of