My scanner doesn't have that level of detail - it just displays whatever might have turned the check engine light, as far as I know.
This was a suggestion to take it another step further. If you don't have a scanner that will do this, then you will need to take it to a shop that has this type of equipment.
Do you have any preferences or recommendations for a relatively cheap software package I could get to read all this stuff on a laptop? I looked around for it, but didn't see anything I though was suitable.
The following company makes software that can be used with a laptop to view live data. I am not sure if they will have the correct data you need to view these particular parameters. However, it would be worth a try. Take a look at their web site and you should even be able to contact them with any questions that you may have.
If this turns out to be a 'serious' mechanical issue - in your opinion is it best to have the unit repaired (by Aamco perhaps) or just buy a rebuilt trans and install it? I do a great deal of travelling - I have a trusted mechanic who works on the truck - I'm trying to not have to do all of the above.
Personally, I would install a rebuilt transmission. Be sure it comes with a warranty.