Confirmed! Launch X431 ECU & TCU Programmer can read and write Flash data to Chevrolet 6T45 ECU on Bench no issues.
Here are the operation steps.
Connect Launch X431 ECU Programmer to a PC/computer via a USB cable
Open X431 ECU & TCU Programmer software on PC/computer
Input 6t45 in the search box to quickly find the ECU model- Chevrolet Cruze 2008-2019 1800 140 6T45
Select the ECU model and Bench connection type
Enter the operation page
Check the connection diagram and follow it to connect X431 ECU Programmer and original 6t45 ECU via the Bench Mode Cable properly, and connect 12V power supply to the X431 device as well.
Connect ECU, read Flash data, save Flash data and disconnect ECU, all are OK
Then connect X-431 ECU Programmer to a new 6t45 ECU by the above same connection method
Back up Flash data, and write the original 6t45 ECU data into the new ECU
All works fine!
Launch X431 X-prog3 with PC Adapter also can clone Chevrolet 6T45 on bench, no need X431 tablet.