Need to buy ACDelco E84 checksum fomular

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Cuongcoco
Posts: 22
Joined: Sun Jan 03, 2021 5:52 pm

Need to buy ACDelco E84 checksum fomular

Postby Cuongcoco » Fri Feb 26, 2021 11:47 pm

Hi everyone
I have Spark with ACDelco E84 ecm. I need modify some byte in calib segment (like name of segment) but i don’t know how to calculate a segment checksum.
Anyone have this checksum fomular please sell it for me. Thank you very much
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