TRNW-2: 6t40 techm dead apparently

[Justin Merritt]

I re read your original post.  If i understand right, you hooked your hp
tuner back up directly to the transmission.  If so, that would bypass all
other data lines that may or may not be interfering.

Justin

On Wed, Jul 16, 2025 at 7:53 AM Steve Everett <severett61 at gmail.com> wrote:

>    I'll mention it ,  I would like for it to be something like that,  as
> it is now I'm wondering if I inadvertently did something wrong ?  but I've
> done this dozens of times and never had this happen before ,  its just
> puzzling
>
>   Steve
>
> On Wed, Jul 16, 2025 at 8:48 AM Justin Merritt <justincmerritt5 at gmail.com>
> wrote:
>
>> Look at your data line communication routing.  Years ago my R&R guy
>> messed up the plug to the electric power steering rack on an equinox 6t40
>> and the transmission would randomly loose communication.  No crank no
>> communication with scanner was our problem.
>>
>> Justin
>>
>> On Wed, Jul 16, 2025 at 7:44 AM Steve Everett via trnw2 <trnw2 at trnw.net>
>> wrote:
>>
>>> Okay guys,
>>>               I have no idea what happened, but I may have bricked my
>>> first techm ?  although I don't see how ?  I was cloning a techm using hp
>>> tuners, like I've done dozens of times, doing it on the bench, we ordered a
>>> new GM techm I downloaded the software off the old one, and then
>>> re-uploaded the program onto the new tech, the original was from a 2017
>>> vehicle,  the last 4 digits of the part number matched the one we got from
>>> from WIT, it was a new GM in a GM box , never opened,  the new techm
>>> accepted the software and transfer was complete,  finished the unit, RnR
>>> guy installed it, cranked it up and it threw a U0101 code,  try to
>>> communicate and it wouldn't , no response, hooked my HP tuners up to the
>>> unit,  no response ?
>>>
>>>    Never had this happen before ,  anyone got any ideas ?
>>>
>>>   Steve
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>>
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