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OK, so help me out with some of the basics:

Is the TCM a part of the engine or the transmission? Where is it physically located?


...just trying to understand my truck a little better.
...

I apologize if this has been covered elsewhere, but I can't seem to know the right search terms to find the answer to my question.

When the 5-tune switch feature becomes available for the LBZ...

Before I waste any time, can anyone tell me if EFI Live will work with Windows Vista? Will the drivers work? I'm sure the software is fine if the drivers load up OK.

I know my speedometer read about 68 mph when my GPS said 65 mph, so the factory numbers do indicate more miles traveled than actual, resulting in a better "perceived" fuel mileage. :)