17-21 GM Duramax L5P HP Tuners New GM Unlocked T87A TCM TCM Type:Serv# 24279973 Simple installation using factory mounting

Simple installation using factory mounting points Clamps and hangers included

realtime measurement allows you to know when to downshift or when to take your foot out of it

Fits 2019-2020 Cummins 6

oversized press-in valve seats

Kit includes: New Nodular Sprung hub Dual Disc Flywheel

17-21 GM Duramax L5P HP Tuners New GM Unlocked T87A TCM TCM Type:Serv# 24279973 Simple installation using factory mounting*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