Cadillac Powertrain Control Module (PCM) Tuning Discussion, PCM Tuning Progam for NorthStar V8's? in Cadillac Engine Technical Discussion; http://www.hptuners.com/forum/showth...ight=northstar
Show your interest!!! Only serious interest please, be honest if you would buy it if they had it....
It might be faster to pull the flash memories and then read them to get a actual code.
You need to determine which IC's they are, what processors they are and then decipher the communication they are to use.
But like they said, screwing up can "blow" a PCM. But, rarely is the PCM "bad', it is just a corrupt flash. So you simply toss back in your programmer and flash it back and solder it back down. The PCM is back in business.
The fun is then breaking down the OS and figuring out which table is what, which switch setting is what and what constant is what.
I work on hardware, I am not a software junkie. So the first part is pretty easy. Second isn't my forte....
Well, EFILive has done some work on the 4T80E in the 06-07 Devilles. Maybe they are next on the list!
Everyone who is seriously interested, email TC@tunercat.com, he is the software engineer and designer of TunerCat OBD1 and 2, which 2 is now Jet Spectrum Tuner, but he still is the software guy to convince....
i have emailed him a couple of times over the past 2 years about this but it cant hurt to try again have you emailed him yet if so what did he say last time i talk to him he told me that he dont have anything that can read them the software is not bad i have all the obd1 and obd2 programs he offers and it is a lot cheaper than others i use and it does the same thing
i have emailed westers and they told me that they will have something for the n* sometime april they also have software for the new n* now http://westers_garage.eidnet.org/
the progam looks alot like tunercat
I have been talking with them and I understand why everyone won't mess with it. It would really take a pretty good overhaul of the existing program to make it work right. They do it now, but have to apply some manual processes to the .bin before they can write it back into the PCM.
Looks like Tunercat OBD2 (now called Jet Dynamic Spectrum Tuner) IS working on it, if anyone would mess with it, they would.
From what I gather, keep watching, support might be closer than you think. Westers CAN do it now, but the PCM must be shipped to them for it (I agree on the reason)