Results 1 to 15 of 27

Thread: Gm Seed key algorithms

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #16
    Fuel Injected!
    Join Date
    Mar 2013
    Posts
    1,475
    After playing with some of the algos and manually converting some of them to figure how it works, I found some inaccuracies in the manual.

    The 1`s complement and 2`s complement are switche
    The correct way to do it should be
    0x2A = Complement – if HH>LL use 1’s complement, else use 2’s complement

    This was checked for sure on algo 00, and verified on some other algos. It is known for sure that the formula of algo 00 is flip bits[or 1`s complement]

    oo algo
    2A [A9 >21]

    So 1`s complemet is flip bits or [FFFF-value]
    2`s complemets is flip bits and add 1, or [FFFF-value]+1


    Here are some valid combos for anybody that wants to manually convert the seed.

    05 [4F EE/ 53 A8
    06 [4F EE/ 42 C7
    07 [4F EE/ 15 29
    07 [53 4C/ 89 37
    10 [4F EE/ 2F 96
    0D [4F EE/ 5D 94
    0C [08 97/ E6 0E
    22 [4F EE/ CA F2
    28 [4F EE/ A4 FE
    36 [4F EE/ AB 5D
    12 [39 46/ 71 47

    Tom H can you run 4F EE seed in your app with all the algos and post the result for comparison. I can verify it and confirm that the calc are correct.

    Last edited by kur4o; 01-15-2019 at 11:46 PM.

Similar Threads

  1. Getting seed/key on locked pcm brute force style
    By mecanicman in forum OBDII Tuning
    Replies: 21
    Last Post: 06-29-2014, 08:24 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •