Whats included ?
- GM T87A TCM
- Unlock Service
- Tuning (optional)
NO CORE REQUIRED !
Works with emission on and off trucks!
Two Options to Unlock Your L5P’s 6-Speed Transmission
Looking to tune your L5P Duramax with the 6-speed transmission? We’ve got you covered with two powerful options:
Option 1 – TCM Only:
Purchase our brand-new unlocked GM T87A TCM, ready for custom tuning through HP Tuners or EZ LYNK. This gives you the flexibility to use your own tuner or work with a third-party calibrator of your choice.
Option 2 – TCM + Custom Tuning:
Bundle the unlocked T87A TCM with our in-house custom transmission tuning, available for both HP Tuners and EZ LYNK platforms. This option includes lifetime support—so if you ever need updates or adjustments, we’ve got your back.
What You Need to Know:
- Flash device not included – Sold separately
- Both options work with HP Tuners or EZ LYNK
- Lifetime support included only when you purchase the TCM + tuning bundle
- Custom tuning improves shift performance, drivability, and towing response
Choose your option at checkout and get the most out of your L5P’s 6-speed transmission. Have questions? Our tuning experts are here to help.