Delco/AC-Delco E39A — online firmware checksum recalculation. Compatible vehicles: Buick, Cadillac, Chevrolet, Holden. Upload MOD and ORI — result in a second, preview is free.
The plugin is already selected. Upload your MOD and ORI firmware — you'll get the result in a second.
Delco/AC-Delco E39A — a GM/Delco ECU (Chevrolet/Cadillac, OBD-II); the checksums are recalculated after editing.
This unit is found on бензиновых vehicles Buick, Cadillac, Chevrolet, Holden, Opel, Vauxhall (2012–2017) — a total of 25 models, among them Buick Cascada, Cadillac ATS, Chevrolet Malibu, Holden Cascada, Opel Astra, Vauxhall Astra.
Recalculation is needed after any calibration edit — Stage 1, Stage 2, Stage 3, Pop & Bang / decat, Launch control, Speed limiter off, OPF/GPF off, Lambda off, DTC removal, Cold start fix: the checksum no longer matches, and the ECU throws an error or refuses the firmware.
Upload the modified file (MOD) and the original (ORI) — the tool compares them, finds the affected regions and recalculates only the required checksums, leaving the rest of the calibration untouched. The result is ready in a second and free; downloading the fixed .bin requires registration in the portal.
Other checksum plugins from the same manufacturer — open any of them to recalculate the checksum.