Here's the story. My wife had complained that the AC was not working. When I checked it seemed as if the driver air was not as cool as the passenger side which was cold enough to make me doubt it was low on freon. Went into my mechanic, who is good, and was told that it was the blend doors. Air on drivers side was 29 degrees cooler than pasenger side. Caddy charges $3100 to fix and he could do for $1500 but suggested we first try setting the passenger side air down cool and direct vents toward driver. My wife did that but stopped back at the mechanics thge next day by herself when she again experienced no cold air at all. He agreed that there was no cold. Not a happy wife. The car is scheduled to go in shortly to have the blend door fix but my question is whether the sudden lack of cold air is related to that problem? The car has 102,000 miles and I have had it since new. My goal was to run to 150K before purchasing a new one but with all the stuff going wrong I am seriously considering a brand switch. My second question is whether most of these frustrating problems like blend doors, heated seat failure front brake problems etc. have been fixed on the new models?