I just starting using PCMHammer with ODBX Pro USB. I disconnected the PCM from the wiring harness and used a bench adapter on a Vortec 5.3 (probably an '03 truck engine). I am using a MacBook Pro 13" 2015 Retina running Windows 10. When I try to download the entire PCM, it works but then fails ...

I was sent a file containing addresses, names, and some comments for what appears to be the entire calibration segment. It's kind of amazing. I'm guessing somebody went dumpster-diving outside a GM building 15+ years ago and hit the jackpot. I won't mention any names, but the person who sent it can...

I love learning. I didn't get an answer so I'll answer myself in case anyone else has the same questions. I didn't use the universal patcher but I did learn that the checksum location and ranges are included in the P59 binaries starting around 0x500. Attached are the specifics values for 12592618 bu...

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jlvaldez, I made a quick hack to your script by reinitializing p59_segments in the gen3_checksum.__init__ function. Below are the lines that I added right after self.p59 = True. I also modified the header that gets printed to that everyone can tell which version is being run at runtime. The modified...

jlvaldez, did you update the script for P59? I downloaded the version 0.1 from this thread, but still see the hard-coded memory ranges. If not, I'll start working on modifying the script for P59 files.

I have been comparing locations between 12587603 and 12592618. I found the parameters I wanted to change in 12592618. I modified the 12587603 XDF for the new parameter memory locations in 12592618. Are the checksums the same between versions or do I need to find the new checksum locations is 1259261...

Thank you soooooo much for donating all your time and energy into this! I'm incredibly excited to try this on my Dad's truck. I have been comparing the 603 to a 618 OS to find similar address, but ideally I would like to transition to the 603 OS. I would be great to have something in the wiki on how...

I have been playing around with Ghidra and OS 12592618 compared to OS 12587603. Using the cross-references generated by Ghidra and the 603 XDF, I was able to find the corresponding memory locations in 12592618. I was focused on the fan and COT (to disable it) parameters. Feel free to check my work. ...

Yes Data Link Controller. I'm looking for which IC implements the communication port so I can lookup the specifics of the reads and writes to the registers/FIFOs.