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The Performance Diesel Worx 68RFE Gorilla Grip Valve Body is built for customers who demand reliability
Crankcase Breather Kit
Reliable signal emulation — mimics the factory sensor’s resistance range so the ECM reads a healthy coolant level even when the original sensor fails
2017-2019 Duramax L5P T87A Transmission Tuning Package Duramax LML Hard Parts ensuring seamless access and instantWhats Included Transmission Tuning Configuration Four (4) HPTuners Universal CreditsRequired for TCM unlocking and flashing. As of November 18, 2025, HP Tuners has officially released direct OBDII flashing support for the GM T87A Transmission Control Module (TCM), eliminating the need to remove, ship, or exchange of the TCM unlocking
