I have a 01 4t80e the other day it started delay shifting and wouldnt shift into 4th gear either. I put my code reader on the car and it brought up 5 or 6 transmission codes. How would all the solenoids go bad at once? Is maybe the wiring to or inside the pan bad? Or could transmission of overheated and cause everything to fail?

 

This is a link:

Beware: Common Problems of the 4T80E Automatic Transmission