17-21 GM Duramax L5P HP Tuners New GM Unlocked T87A TCM

*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 TCMsYou 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. Simply install your new HP Tuners TCM, and you are ready to tune with your MPVI / MPVI2 and VCM Suite. Purchase & Installation InstructionsTo purchase a new unlocked T87A TCM which is ready for tuning for your specific vehicle application, simply identify your Serv# which is located on the top of your T87A TCM, then select the corresponding Serv# from the above drop down menu and finally provide your VIN in the note box at checkout. Lastly, once you receive your TCM from us, ensure