Hi there, I just came from the dealer and they said that to repair/replace my AC Evaporator it would be $3700.00 because of a coolant leek. They already got me for $250 to find the leak. I'm fairly good at mechanics but they told me it was a difficult repair job. The service tech said it was behind the dash? If so is it a hard job 1-10 (one being easy)? Any help would be great. Thanks!