How to clone Buick T87 gearbox TCU withLaunch X-prog3andPC adapter?

Select Cadillac-ATS-T87 SPC564A protocol.

Check wiring diagram.

Connect X-prog3 with T87 TCU via X-prog3 PC adapter.

Connect TCU.

Read TCU information.

Read and save Flash data.

Disconnect.

Connect the donor TCU with X-prog3 and PC adapter.

Connect donor TCU.

Back up flash of the donor TCU.

Write original TCU data to the donor TCU.

Write data successfully.

Disconnect donor TCU.

Install the donor TCU to vehicle.

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