ECUHELP KTFlash is fully capable of reading and writing Delco E39 ECUs on bench . The tool automatically do checksums, supports cloning, and performs DTC OFF without issues. Additionally, KTFlash can also operate via OBD for this ECU.

Bench Connection & Procedure
The images below illustrate the correct wiring setup for KTFlash to connect to the Delco E39 ECU bench mode and the steps during the reading/writing process:

Video Demonstration:
Watch the video showing KTflash reading/writing Delco E39 on bench and performing DTC OFF: