One problem related to transmission stuck in gear has been reported for the 1999 Kia Motor Sephia. The most recently reported issues are listed below.
The car wouldn't start shortly after I bought it. It took several trips to the dealer in order for them to replace the starter. After the starter was replaced the problem continued and the flywheel was finally replaced. Approximately one week prior to receiving a recall notice on the wiper blades the wipers stopped working during heavy rain on a highway which almost caused me to get into an accident. I have had electrical problems such as the ceiling light going on and off whenever I turned corners. The car battery was even replaced after the new starter and flywheel were put in because the car still had problems starting. Recently the transmission had to be replaced. A week after the transmission was replaced the overdrive light and the engine light started blinking on and off. The car finally stalled and had to be towed. The car was given back to me and I was told that a gasket in the transmission was leaking. A week after that the over drive light and the engine light started flashing again and the car starting driving as if it was stuck in first gear. The car finally stalled again and wouldn't move.