07-2013 GM BCM
Posted: Mon Mar 08, 2021 12:52 am
Hello,
Has anyone looked at getting into the GM BCM's to adjust or activate options?
Has anyone looked at getting into the GM BCM's to adjust or activate options?
Electronic Fuel Injection - Developement & Tuning
https://pcmhacking.net/forums/
Writing calibration sections is pretty safe. Even pulling the scantool mid write is easy to recover, done it a good 50+ times on my own setups here.ironduke wrote:I've been glancing at it but haven't gotten anywhere.. I've gotten a few logs of BCM programming and can see how it's done but don't have seed key algo's and don't have original bins to work with so I'm kinda dead ended..
My only want is to lengthen remote start runtime for my own vehicle.. If I knew what byte t o change I could mock up a programming event since I know my own seed and key and have the cal files.. too worried about bricking it unless Im sure though, lol..
Good to know, I was kind of hoping it was like writing cals to some of the ecms I've been playing with.. they seem pretty bulletproof if you screw up a cal write, but in some cases I needed to write the OS AND cal to fix it, not all the time though..Tazzi wrote:Writing calibration sections is pretty safe. Even pulling the scantool mid write is easy to recover, done it a good 50+ times on my own setups here.ironduke wrote:I've been glancing at it but haven't gotten anywhere.. I've gotten a few logs of BCM programming and can see how it's done but don't have seed key algo's and don't have original bins to work with so I'm kinda dead ended..
My only want is to lengthen remote start runtime for my own vehicle.. If I knew what byte t o change I could mock up a programming event since I know my own seed and key and have the cal files.. too worried about bricking it unless Im sure though, lol..
In global A, its BCM and ECM. But from BCM you can increase to 25min and unlimited restarts.ironduke wrote:Good to know, I was kind of hoping it was like writing cals to some of the ecms I've been playing with.. they seem pretty bulletproof if you screw up a cal write, but in some cases I needed to write the OS AND cal to fix it, not all the time though..Tazzi wrote:Writing calibration sections is pretty safe. Even pulling the scantool mid write is easy to recover, done it a good 50+ times on my own setups here.ironduke wrote:I've been glancing at it but haven't gotten anywhere.. I've gotten a few logs of BCM programming and can see how it's done but don't have seed key algo's and don't have original bins to work with so I'm kinda dead ended..
My only want is to lengthen remote start runtime for my own vehicle.. If I knew what byte t o change I could mock up a programming event since I know my own seed and key and have the cal files.. too worried about bricking it unless Im sure though, lol..
I'll try to find some time to make some notes on the logs and get some of my own code written to at least write to mine.. I might even pick one up on ebay I can rip apart and get some chip info and maybe pull the flash with bdm or xprog, no idea if I can but I can always try, right? lol.. I've even tried digging around with the E38 flash as I think the 2 remote start limit is in the ECM and not the BCM, I've faked t he bcm message to the ECM but can still only get 2 remote starts out of it.. Being able to remote start 3 times would be neat, but the 10 minute runtime is a pita to me in when it's 2 degrees outside.. Funny how some of the newer vehicles have 15 minute timers..