Launch X431 ECU Programmer Guide: Clone GM 6T30 Gearbox TCU on Bench
How-to: clone GM Buick 6T30 transmission gearbox TCU with Launch X431 ECU & TCU programmer on bench.
Quick search 6T30 and select Buick Encore 2013–2019 6T30 gearbox TCU. Choose bench mode.
![Launch X431 ECU Programmer Clone GM 6T30 Gearbox](https://cdn-images-1.medium.com/max/800/0*-mLq_L63J-T0Bqjt.jpg)
Check wiring diagram.
![Launch X431 ECU Programmer Clone GM 6T30 Gearbox](https://cdn-images-1.medium.com/max/800/0*t5OkS0dcMeKprkOW.jpg)
Connect 6T30 Gearbox TCU with Launch x431 ecu & tcu programmer
![Launch X431 ECU Programmer Clone GM 6T30 Gearbox](https://cdn-images-1.medium.com/max/800/0*ECBMhFxuiVdy9Paj.jpg)
Connect TCU.
Back up FLASH data of the original TCU.
![Launch X431 ECU Programmer Clone GM 6T30 Gearbox](https://cdn-images-1.medium.com/max/800/0*qntQJyTit4_6xL1w.jpg)
Disconnect the original TCU.
Connect a donor TCU with launch x431 ecu programmer. Back up flash data of the donor 6T30 TCM.
![Launch X431 ECU Programmer Clone GM 6T30 Gearbox](https://cdn-images-1.medium.com/max/800/0*bL-vCnm9QVuZy3HJ.jpg)
Write flash data to the donor TCM.
![Launch X431 ECU Programmer Clone GM 6T30 Gearbox](https://cdn-images-1.medium.com/max/800/0*oM16y6xHnVKygtcw.jpg)
Clone 6T30 gearbox successfully. Now install the gearbox back to vehicle.
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