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Thread: 08 E38 ECM Locked itself

  1. #1
    New Member
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    Feb 2011
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    Default 08 E38 ECM Locked itself

    Hey all,

    Hopefully there is a way to get this unlocked, I was able to read the cal, and make changes, went to reflash cal and it tells me it was locked with a custom key, I need a way to program this ECM, it has to go Wednesday. I did not lock the ECM and now I can't read the cal out of it. Engine still starts and runs but I have to make changes to get rid of the CEL and fix a speedo parameter that is causing it to read wrong. Any help would be great.

    Thanks,
    1s1k

  2. #2
    Joe (Moderator) joecar's Avatar
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    In the tunetool, go Help-About

    what build version does it say...?

  3. #3
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    Build version 323, V7.5.10

  4. #4
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    did u read/write the tune with the tune tool or v8 software? if u used the v8 software you can just write another tune over the top of it

  5. #5
    Lifetime Member GMPX's Avatar
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    Default

    Quote Originally Posted by 1S1K View Post
    Hey all,

    Hopefully there is a way to get this unlocked, I was able to read the cal, and make changes, went to reflash cal and it tells me it was locked with a custom key,
    Never heard of this happening before, are you able to post the tune up that you read out?
    I no longer monitor the forum, please either post your question or create a support ticket.

  6. #6
    Junior Member
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    same problem but different. popped in a different ecm from my old suburban because I needed the gas tune from it before I pu in the duramax but forgot. swapped this 07 into an 07 suburban and it says its locked. How come why what for? should I build a stand alone harness?
    1972 Chevy Blazer, Twin Turbo Duramax 6.6
    69 Maro TT 427 LSX, Wayne due Vett frnt sub,
    Lateral Dynamics 3 link rear, D 60,
    T56, 18X10' 18X12 Boze Forged Speedsters,
    13" wilwood 6 pot fronts 13" wilwood 4 pot rears,
    (all Still under construction)

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