Supports the more modern 2MB E38 and E67 controllers.
The Joukey GM Checksum Plugin is a plugin designed for GameMaker, a widely-used game development engine. This plugin is intended to help developers ensure data integrity and security in their games by generating and verifying checksums.
Unlike manual tools that require you to specify exact byte ranges, this plugin reads address information directly from the file. It typically only requires the start address (0) and the file size. joukey gm checksum plugin
Supports the common 512kB P01 and 1MB P59 controllers found in many LS-based trucks and cars.
The (developed by Jouko Y, also known as "joukoy") is an essential utility for automotive enthusiasts and tuners working with General Motors (GM) Powertrain Control Modules (PCMs). It is specifically designed to work within TunerPro RT, a popular free software for tuning and recalibrating engine parameters. What is a Checksum and Why Does It Matter? Supports the more modern 2MB E38 and E67 controllers
correct XDF for your vehicle's OSID? AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 10 sites GitHub - joukoy/gm-checksum-plugins Fixes checksum when saving file in Tunerpro. Reads checksum address information from file, no need to specify any address, only bi... GitHub GitHub - joukoy/gm-checksum-plugins Tunerpro checksum plugins for GM PCM files. Fixes checksum when saving file in Tunerpro. Reads checksum address information from f... GitHub Checksum Help - pcmhacking.net Jul 19, 2021 —
Modern PCMs verify these values at startup. If you modify a tuning parameter (like spark timing or fuel maps) without updating the checksum, the vehicle may enter a "safe mode," trigger a Check Engine light, or fail to start entirely. Unlike manual tools that require you to specify
While specific details about the plugin are limited, here are some potential features and benefits:
The development team was stumped. They had implemented various measures to prevent data corruption, but nothing seemed to be working. That's when they called in the expertise of Joukey, a brilliant programmer with a passion for debugging.
But Joukey didn't stop there. He continued to tweak and improve the plugin, adding features such as: