Global A Second Hand PCM A Step Forward

Whow!. Very Interesting. If you success, it will be a very good thing for many. Susbcribed!

As often as we see these fail I’m sure this will be tested soon enough. If only the big training conferences thought EEPROM was a course that would sell.

Geoff doesn't get to work on cars that new.

lol Dennis - Tru dat!

Justin, Do you have any suggestions/shortcuts on where to get good information/training on EEPROM? It seems some of the groups that someone could get involved with are rolling back odometers, and are a little scuzzy. I would like some good starting from the bottom basic info to get started.

Mike is the prom man. He had submitted a course that didn‘t get accepted. I am not the man to ask these questions to. Contact Mike.

Hi Bill, I am working on a class that covers this information. Rolling back odometers is illegal and will put you in prison. Correcting replacement odometer readings after second hand replacement is a valid process. Most of the time I am rolling them forward. We have strict emissions testing in our area and the miles between years has to be plausible. So going backward is not an option. -Mike

Thanks Mike, There is a bit of a stigma surrounding this type of work. Similar to tuning...There are a disproportionate amount of rotten apples in the group when compared to other areas of expertise. That's my perception of it anyway. It seems that way when you see "Businesses" on facebook telling customers to PM them for a mileage "fix". etc. etc. In no way do I think you are like those…

If you do want to try to bench flash it, SPS wants to see, I believe, 3 modules on the comm lines and then it will allow the flash to go through.

I have heard different stories on this. Some say there is a check bit loaded randomly in one of the modules others say just a BCM. I guess I need to invest in some parts to try it out,

It’s might be a combination. SPS definitely wants to see 3 modules. But it might want to see the BCM as one of them.

Great News Michael, if this help find some to test it I'm including all the cars that should work with this ECM. I wis i have one.

Aren't there some type of environmental identifiers involved in flashing it? I dont think it can be done offline. I dont think SPS will allow you to move forward online,either. Interesting.....

Hi Rudy, see Brandon's comments. BTW to prepare the ECU I am not using TIS or any GM product. The difficulty in programming with TIS offline is the reason for me needing someone to install and try.

LOL, Mike. And Happy New Year! For the benefit of everyone that reads EVERYthing Mike posts (like me), who might read this, and have friends in Hawaii, be it known that USPS Priority Mail "flat rate boxes" ship to all 50 states for the same price. :-)

I am glad you got my jest. I was all in good humor.

Of course! I'm still a regular iATN guy. We joke around all day...it's most of the fun! Learning is boring without joking around with your buds.

Mike, If you had to define "Virginize" an ECU, what would you say?

Hi Mike. Good stuff. Thanks for sharing your exploits. There is no doubt that having the ability to "virginize" good known modules, will be beneficial in many situations where they have been phased out or are otherwise "unobtainium", that could result in sending a good vehicle to the scrap pile. Looking at the ECM applications, that ECM is interchangeable with # …, the current…

Thanks Martin, I just pulled the Terrain out of my hat. I had a stack of E39 ECUs and picked what I thought was a compatible vehicle. I may have not chosen a match. I will pull a VIN from one of these and post it. Some of my samples were Global A and some were not. The virgin file will work with either.

Mike I’d love to see a eeprom class. Do the virgin file work with all ecm global A?

Hi Justin, If one had all the virgin files then yes with the right tool it can be done. There are about 8 variants out there of ECU. You would have to have a new PCM of each to acquire the needed files.

Michael did you find a volunteer to try out the ECU yet?? If not do you feel the application list that Saul M. posted is correct? I have good relationship with several used car lots in my area and wouldn't mind lookng to find one in inventory for us to experiment with. Let me know

Hi Michael, I know this is an old post. But currently we have this vehicle 1G4GE5ED6BF241145 that is needing an ECM. 3 of the injector drivers have failed. Would your ECM still be available? Seems to be no new ones in the US and we have had one on order for almost the last two months. We have thought of trying a used one but I think this module is Global A. They started using the GDS2 on the…

There is no eeprom involve here, its actually a microprpcessor MPC.

Hi Timothy, First of all the ECU in question has been messed with in our EEPROM classes quite a bit. Not sure I would trust it at this point. If you would like to clone your ECU, the tool to use is the IO Terminal with GM ECU SIM card. It will allow you to read from the original and copy to a donor. Then use SPS like normal to complete programming.

Would you suggest the IO terminal as a good starting tool for getting started with ECU cloning? Or maybe you have another suggestion.