TRNW-2: 6t40 techm dead apparently

[Chris and Cathy Kershaw]

I’ve gotten 6l tcms from wit with bent pins out of the box.

On Wed, Jul 16, 2025 at 8:48 AM Justin Merritt via trnw2 <trnw2 at trnw.net>
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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