17-21 GM Duramax L5P HP Tuners New GM Unlocked T87A TCM TCM Type:Serv# 24279973 A: Main Injection Duration is

A: Main Injection Duration is the amount of time that the injector is turned on or energized

4 Power Levels To Choose From

Injectors and Tuning without fear of pushing a head Gasket the fire ring provides a positive cylinder seal to keep compression in the cylinder where it belongs

(1) Washer

17-21 GM Duramax L5P HP Tuners New GM Unlocked T87A TCM TCM Type:Serv# 24279973 A: Main Injection Duration is*Please check with us to make sure this is in stock, due to high demand they come and go in stock often* You can now purchase New GM T87A TCMs for your 2017+ GM vehicle equipped with the 10 Speed and 8 Speed transmissions directly from HP Tuners that are already unlocked and ready for tuning. New GM Unlocked T87A TCMs You can now purchase New GM T87A TCMs for your 2017+ GM vehicle equipped with the 10 Speed and 8 Speed transmissions directly from HP