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OK just to keep this from being a ?well what happened? ending, I changed the TEHCM I ordered new from GM, did a ?flash write all? on the TCM only, with the file I pulled from the vehicle when I first...

Thanks TheMechanic, diagrams are perfect, I can now see how the controller monitors the solenoids.

I ordered a TCM a few days ago. I dropped the pan and TEHCM today and found a broken spot weld on...

Thanks again blindsquirrel,

I forgot that the ATSG book had a sche in it. It shows the solenoids as being switched to ground as the pic you sent. I would like to try and pulse SS1 like TheMechanic...

Thanks blindsquirrel,

Yes I did look through all the channels for the transmission. After not finding it I came to the forum. Could it be called something besides SS1?
I did find something under...

Just put the 6l80 back together for my first rebuild. The Torque Converter filled the trans up with small sparkly metal pieces and gouged out the pump and bell housing along with 4-5-6 clutch pack...