PCM part numbers, family designations, and nicknames?

[JakeRobb]

I have an "0411" PCM. So called because those are the last four digits of the GM part number.

The 0411, as I understand it, is also known as a P01, but P01 is a family of PCMs, including the 0411 and a few others. I know that 0411 is considered the most desirable P01, but I don't know why.

It's also known as a "red/blue" PCM, referring to the colors of its two harness connectors, whereas some other PCMs have blue/green connectors (and there may be more color combos too; IDK).

And finally, my 0411 can also be called an '01-03 LS1/6 PCM, because those are the engines GM controlled with it.

I am looking for a table or chart that lists all gen3/4/5. PCMs, along with their family designations, connector colors, corresponding vehicles/engines, and any other relevant notes (e.g. RAM size, capabilities, etc). Does such a thing exist, or is this all just tribal knowledge?

If it exists, where?

If it doesn't exist, I'd love to build it with help from this community. I'd do so in the form of a dynamic web page that let people search and filter by a variety of criteria, which I'd then host on my website.

Also: where do the family designations (P01, E38, E63, etc) come from? Are they GM internal codes? If so, do we know them because GM published or shared them officially, or did the information 'leak'? How have we generally learned the designation and other details of successive new PCMs over the years?

[horsepowerguru427]

The '411' PCMs youre reffering to are actually broken into 2 groups, P01 and P59. P01 (red and blue) is the earliest LS PCM that was used roughly until DBW was introduced. DBW applications use the P59 (blue and green). The P01 is so popular because most people do not want to use DBW on their application and even though there is a way to disable DBW in the PCM parameters, most people would rather just get a P01 and not have to deal with it. Personally i like the added options and parameters in a P59 and have tuned several with very good results.
Gen 4 is something i dont play with much. Ive tuned a couple E38s which i believe is the First gen 4 PCM. Its a whole diffent animal than a 411.

[horsepowerguru427]

This will help a little.
https://forum.hptuners.com/showthrea...-based-PCM-ECM
https://www.lsenginediy.com/comparin...i-controllers/
https://thetuningschool.com/blogs/ne...ons-of-gm-ecms

[JakeRobb]

The '411' PCMs youre reffering to are actually broken into 2 groups, P01 and P59. P01 (red and blue) is the earliest LS PCM that was used roughly until DBW was introduced. DBW applications use the P59 (blue and green).

I think you have this a bit wrong.

AFAIK:

* 0411 is the PCM that was used in 2001-2002 LS1 F-bodies, as well as 2001-2003 Corvettes including Z06. It is part of the P01 family. It supports both DBC and DBW. I believe the actual OS flashed onto the hardware is different for F-bodies with DBC vs Corvettes with DBW; it's not just a matter of turning stuff off or on.

* There are at least two earlier P01 models, with different part numbers (not 0411). One of these came in '97-98 Corvettes and '98 F-bodies. Another different model came in '99-00 (both platforms). I don't have these model numbers, but AFAIK all three are considered P01.

* P59 PCMs were found in 2004 Corvette, GTO, and CTS-V. Maybe others as well. These also have different part numbers (not 0411). My understanding is that these are DBW only, as they lack provisions for IAC.

More details here:
https://pcmhacking.net/forums/viewto...t=7781#p115232

[edcmat-l1]

411s are 99-03ish. Cars, trucks, snowmobiles, anything they needed an ECU for.

P59s came in mostly trucks, although they did finish out the C5s with them and they're in a few oddball applications between 04-07.

There are a few P59s that are drive by cable. The 04 GTO was P59 DBC. Most are DBW.

[JakeRobb]

411s are '01-03.

[2xLS1]

4896 are 99-00 red/blue P01s.

[JakeRobb]

Fleshing out what I think I know so far:

Generation	Family	Part #	Service #	Flash	Connectors	DBC? (has IAC driver)	DBW?	Used in	Notes
Gen3 / 24x	P01	16238212	?	512KB	Blue/red	Yes	Yes	1998 LS1 F-body 1997-1998 LS1 Corvette	Known to be troublesome. Very sensitive to voltage regulation during writes; bricks easily. Unique pinout relative to other P01s; e.g. some repinning required to swap to a 411.
Gen3 / 24x	P01	09354896	?	512KB	Blue/red	Yes	Yes	1999-2000 LS1 F-body 1999-2000 LS1 Corvette
Gen3 / 24x	P01	12200411	?	512KB	Blue/red	Yes	Yes	2001-2002 LS1 F-body 2001-2003 LS1 and LS6 Corvette
Gen3 / 24x	P59	12589161	12589462	1MB	Blue/green	?	Yes	2005 G-VAN, LQ4
Gen3 / 24x	P59	12589161	12602801	1MB	Blue/green	Yes	Yes	2006 - 2007 Express
Gen3 / 24x		12580786	12582605	?	Blue/green	No	Yes	2003 C-MPV, L59 2003 Silverado LM7, LR4
Gen3 / 24x		12583660	12586242	?	Blue/green	No	Yes	2004 C/K-TRUCK LM7, Tahoe, Suburban, Silverado, Sierra, Yukon
Gen3 / 24x		12589162	12589463	?	Blue/green	No	Yes	2005 C/K-TRUCK/MPV, LM7, LQ4 2006 C-PICKUP, LM7
Gen3 / 24x		12589162	12602802	?	Blue/green	No	Yes	2005-2007 C-PICKUP, L59
Gen4 / 58x	E38							2006-2008 2008-2009 G8
Gen4 / 58x	E38							2009+ 2009.5 G8 2010 Camaro L99 / LS3
Gen4 / 58x	E38		12597121					Holden VZ VE L76 L98 6.0L V8
Gen4 / 58x	E38		12603892
Gen4 / 58x	E38		12589297
Gen4 / 58x	E38		19210738					Holden VE L76 L98 6.0L V8
Gen4 / 58x	E38		12625455
Gen4 / 58x	E40
Gen4 / 58x	E55		12600940					Holden VZ VE LEO LYZ 3.6L V6
Gen4 / 58x	E67
Gen4 / 58x	E78

I am not clear on the difference between part numbers and service numbers. My theory is that part numbers refer to the hardware alone; service numbers are a pairing of hardware and the software loaded on it. So the 0411 PCM in an '01-02 F-body (with its DBC software) would have one service number, but the PCM in an '01-03 Corvette (with its DBW software) would have something else.

Are there other factors of interest? For example, do the OEM operating systems installed on these from the factory have names / version numbers / etc? That might deserve its own table! I believe there are also some ECMs which can drive larger injectors than others, but I'm only just learning about that, so haven't added it to the table as of now.

Is "Family" an appropriate term for the P01 / P59 / E40 / E67 / etc designation? Is there something more appropriate? And, I ask again: where do these come from?

This is obviously highly incomplete, and probably also partly inaccurate. I'd appreciate any contributions and corrections people want to make!

[kevin87turbot]

I like your enthusiasm about learning GM ECM tuning.
GM designated the ECM's by the 3 digit codes. I don't know that they ever printed P01 or P59 designation on an ECM.
Most of the Gen 4 and 5 ECM's actually have the GM designation specified on the ECM label.
For example, an E38 ECM will have E38 on the label, along with the GM part number and Service number.

When someone emails me a calibration file, the first thing I look at is the Calibration tab in HP Tuners.
It'll specify the ECM family...P01, P59, E38 or whatever.

[JakeRobb]

I like your enthusiasm about learning GM ECM tuning.

Thanks! Just guessing based on your username, but I think you might like the other car in my garage.

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