got on ramp for highway didnt shift in 3rd going 45mph at 4000rpm in 2nd, in a 65mph.. put in neutral shutoff engine- turned back on and shifted back in drive and then it would shift fine. looked up problem on net... it was Input Speed Sensor on trans.. easy self fix.. dealership wanted to diagnose the car for $79.95 didn't didnt hear what my problem was just that i had a problem and they want to fix it$$$. A small shop ran the van and told me i needed a rebuild on tranny.. geesh