Transmission Control Module Unlocking service for T87A equipped 2017 and newer GM 8 and 10-Speed transmissions.
- This release provides the first and only 10-Speed transmission tuning solution for 2017 GM Vehicles.
- The T87A TCM for the GM 10-speed needs to be individually licensed for 4 GM credits for tuning.
- ALL T87A TCMs need to be unlocked via the GM Unlock service before they can be tuned.
TCM Unlock Service - T87A