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After checking all the typical issues, the shop decided to drop the trans and take a look at the transmission control unit. That finally revealed the problem.
Apparently some small critter decided to chomp on my transmission control unit wiring harness. The particular wires they decided to snack on were the PT-CAN high and low.
After countless hours, everything is back to normal and running great. What lesson was learned from? I don't know. I guess if your car is unable to communicate with various sensors, see if your CAN wires were eaten?
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