Three problems related to transmission sensor have been reported for the 1999 Dodge Caravan. The most recently reported issues are listed below.
Needed to replace input/output transmission sensors. Not only have we had this done but a number of 1999 Caravan users we have spoken with have had this problem.
While driving at 35 mph consumer heard a loud clunking sound and the speedometer dropped to zero. Also, vehicle would not go out of first gear. Dealer examined the vehicle, and found that the transmission sensor was burned out. This problem occurred again in December 2003, and the dealer repaired the sensor again.
Transmission failed twice during the warranty period. Dealer informed me of unknown cause of the problems (transmission sensor) to go bad twice, but was happy to replace it for free (suspicious, nobody does this for free unless there is a problem). Notified Dodge since it was nearing the end of waranty and filed a complaint.