AutoTuner supports GM ECUs extensively (E83, E92, MED17, etc.) and includes a . Unlike raw binary tools, AutoTuner lets you modify maps, checksum-correct, and export directly as a DPS file ready for dealer-level tools.
A developer modifies a calibration file. They must manually create a specific folder structure, write or edit an XML/INI configuration file to tell DPS how to handle the data, zip the files, rename the extension, and test it in DPS. A single typo in a text file results in a "Failed to Load Archive" error.
Before flashing any custom-created archive, use your tools to read and back up the existing stock calibration and EEPROM data if possible.