Good morning. I am new the the forum and new to Hyundai. Actually I am trying to assist my mother with her 2006 Hyundai Santa Fe. She bought the car new (only owner) It has 54,143 miles on it, but 11 months past her 10 year warranty. Recently it started "lurching" and she "thinks" the check engine light came on. It is not on now. We had the vehicle towed (on a flat bed) to a local dealer. At first they could not find anything wrong with the vehicle. They then called back and said that she needs to have the transmission replaced. I am VERY SUSPICIOUS of this with such low milage, never towed ANYTHING, and been very gently used. I have read the posts to test the Trans Input sensor, Trans Output sensor, Throttle Position sensor. Can anyone else give me any insight or suggestions? Thank you in advance for your help.