Speedometer readings all over the place
 

I was driving my 07 SS to work today and hit a pothole and ever since the the Speedo reading bounces from 20 to 80 back to 40 etc. Also now its struggling getting into gear. I hit with the drivers front tire checked the whole front end and found no issues with the sensors on the hubs. Does the vehicle have a transmission speed sensor or any other speed sensors?