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Thread: Cant flashmy LB7 TCM after a change

  1. #1
    Junior Member
    Join Date
    Mar 2007
    Posts
    46

    Default Cant flashmy LB7 TCM after a change

    So I am trying to mess with shift feel and I tuned the trans andwehn I try to load it it crashes and putsmy tcm into an unknown state. the only thing I can do is revert back to the origianla toon. wich I changed and renamed as well tried it and same shit. What Gives?
    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)

  2. #2
    Lifetime Member THEFERMANATOR's Avatar
    Join Date
    Mar 2009
    Posts
    800

    Default

    Are you full flashing or cal flashing? I've found that many times I have to disconnect my BCM to flash the TCM as it is pickier to accept a flash.
    1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
    DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

  3. #3
    Junior Member
    Join Date
    Mar 2007
    Posts
    46

    Default

    Both. and the only thing that works is after the screwup I can reflash with the factory tune. yea it says I amnot connected tot he V2 and then continues untilllis\t fails thenleaves the tcm in an Unkown state. maybe Email me at durramax@yahoo.com ? =0
    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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