This is an online calculator for GM DPS calibration files. It’s very simple to use:

 - First, select the original file to determine the calculation method ( Big endian or Little endian 16-bit only).
 - Then, select the second file for which you need to correct the checksum.
 - After that, you can download your file with the corrected checksum.

ATTENTION:

 - Both files should be unzipped.
 - The 1st file should be the original version of the 2nd file.
 - If the checksum is not correct in the 1st file, then the 2nd file will not be corrected.

If you find any problems, please write by e-mail : info@ecu-online.com