Dodge: Tranny, shift linkage, speed sensors

Question
Hi,   Replaced input and output speed sensors, the car still on the first gear only.
1: Do I have to reset the transmission codes (repair shop) after replacing the sensors?
2: Could it be the transmission range sensor?

Dodge G caravan 1996 3.3 V6 90k miles.  

Answer
no you don't have to reset the codes.The shift linkage may be out of adjustment,but before i messed with it i would buy a manual before attempting to adjust anything on an automatic transmission.Check the throttle valve cable that runs up to the carb. area.