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Thread: HELP! Identify this ECM!!!

  1. #1
    Lifetime Member DURAtotheMAX's Avatar
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    Default HELP! Identify this ECM!!!

    No idea what this thing is. It was sent to me with a Duramax harness for standalone conversion...it wouldnt power up or read on my bench harness, so I took a closer look and its definitely not an E60/LLY Duramax ECM.

    So then I thought OK its probably an E40 or P12. Nope its not an E40/P12 either...look at the missing pins on the connectors. I looked up the GM diagrams, and all of those "missing" pins on this ECM correspond to something important on the E40/P12 cars I looked up. (IE, some of the missing pins on this mystery ECM correspond to throttle pedal circuits, ignition +12v power on E40/P12 cars).

    Is it some sort of Delphi MEFI controller? I dont think so because those look like E67's, not E40/P12/E60-LLY.

    The only numbers on it are printed on one of the fins. 12234145.....0623...FA02004. Tried googling those numbers, nothing.

    No sticker on the back. Im stumped. What else could it be?

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    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  2. #2
    Lifetime Member ProperTuningOG's Avatar
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    Compared to my E40 stuff here and its very different. How does the harness look pin wise? What was supposed to be supplied? I have seen some different stuff when dealing with Jet Boat harnesses and ECMs.

  3. #3
    Lifetime Member DURAtotheMAX's Avatar
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    It came with an LLY Duramax harness that I was working on for a customer. The harness is a regular old LLY Duramax harness. Nothing special.

    I have an email into the customer asking him where he got the ECM. Because its sure as hell not a Duramax LLY ECM.
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  4. #4
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    Ben,

    Try media blasting the ECM - especially in the highlighted area in the JPEG attached below. I don't know anything about Diesels - but gas ECM's usually have a very small casting that denotes them as "E38" or "E67". The casting is usually on the main ECM body - not on the fins - but rather between the fins.

    Click image for larger version. 

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  5. #5
    Lifetime Member DURAtotheMAX's Avatar
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    Yeah I looked there very closely Taz....couldnt see anything. :(
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  6. #6
    Forum tyhee Site Admin GMPX's Avatar
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    No idea sorry, without the sticker on the back or the stamp underneath it might remain a mystery forever. Perhaps it is a P05 from the V6 line around 2004-2006 ish, but I am sure they have P05 stamped underneath.
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.


  7. #7
    Lifetime Member DURAtotheMAX's Avatar
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    Bingo! I think you're exactly right Ross.

    I looked up the schematics and connector pinouts for a V6 car from 04-06, and sure enough it seemed to match. (the missing pins on the connectors of this mystery ECM corresponded with "not used/unavailable" on the GM connector pinouts)

    Its certainly not an E40, P12, or E60/LLY....so its gotta be a P05, unless theres another GM that uses the same case.

    Thanks for the help!

    Ben
    2005 Silverado, CC/SB, 4x4, LT, LILLY/Allison
    12.9s @ 108 mph

    many thanks to Ross and Paul

  8. #8
    Forum tyhee Site Admin GMPX's Avatar
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    I can tell you a funny story about the P05's and Jesse Bubb.....because to a wrecking yard they all look the same
    Need official EFILive help, please go here.
    For tuning support please post your questions on this forum (or other auto forums).
    Sorry if I don't respond to your PM, don't take it personal.


  9. #9
    EFILive Reseller wait4me's Avatar
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    LOL DANG you Ross, why do you have to remind me of my 100+ p05 ecms sitting in the back of a haunted closet. That where supposed to be e67s....
    lol
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  10. #10
    Lifetime Member Chuck CoW's Avatar
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    Quote Originally Posted by wait4me View Post
    LOL DANG you Ross, why do you have to remind me of my 100+ p05 ecms sitting in the back of a haunted closet. That where supposed to be e67s....
    lol
    Gotcha on that ione.... I've got a bunch here that I snagged off e-bay years ago thinking they were priceless E40s!!! :(

    Anyone need any paperweights???

    Chuck CoW
    CoW BOOSTER! Electronic Throttle Enhancement.

    - CLICK HERE NOW FOR MORE INFORMATION! -

    VARARAM, EDELBROCK, AMERICAN RACING HEADERS, BAER BRAKES, BORLA, EFI Live, Magnuson,
    COMP Cams, PROCHARGER, PRO TORQUE, PHADT Racing, INNOVATORS WEST, and more.



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