[Mystery101]

Check fluid levels? TRS on its way out? VSS too?
Most trans shops will do a free diag, and drive it on a computer to tell you what readings are off such as VSS and TRS voltages, Electronic shift solenoid, etc.. So Id get it checked out..
Edit: There are a lot of dishonest places out there, If the first guy suggests a total rebuild, say that you'll be back and go get a second opinion.