Results 1 to 3 of 3

Thread: Locking Allison TCM

  1. #1
    Lifetime Member Cougar281's Avatar
    Join Date
    Jan 2006
    Posts
    834

    Default Locking Allison TCM

    Why does locking the (5-speed) Allison TCM come up with a warning sayinf it should be done on the bench and can be harmfull to the controller? Is it the same reason you said the LBZ and LS1 ECM's can be dangerous to lock?

  2. #2
    Forum tyhee Site Admin GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,143

    Default

    It all comes down to what part of the flash we need to erase/program as to how 'risky' the process is.
    The last thing you want is your $10 iPod adaptor interrupting the locking session on an Allison TCM, if it did, it is a 50% chance you could not recover the TCM.

    Cheers,
    Ross


  3. #3
    Lifetime Member Cougar281's Avatar
    Join Date
    Jan 2006
    Posts
    834

    Default

    So does that mean that if there are no aftermarket devices in the truck, or if the locking is done on the bench, there is minimal risk of making the TCM braindead?

Similar Threads

  1. TCC Locking
    By GMPX in forum 4speed RWD/FWD Transmission Tuning (incl T42)
    Replies: 9
    Last Post: July 24th, 2009, 07:22 PM
  2. Locking ecm
    By IdahoRob in forum Duramax 06 LLY / 06+ LBZ & LMM
    Replies: 1
    Last Post: July 19th, 2007, 01:10 PM

Posting Permissions

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