99 stuck in limp mode p700 code

Trans stuck in limp mode. Speedometer works. Replaced the input sensor. Nothing changed. p700 code appears. What else should I look at ?

Solenoid pack.

Thank you everyone for the help. It turned out to be the TCM, which was already replaced by a shop approx 1 year before( with a reman unit:frown:). Shortly after I replaced the TCM, both speed sensors went. Replaced those, and the car has been driving smoothly the past few months.

Glad it is running well. You went thru a pain in the fanny time getting there, but you're there!