Air Conditioning My 2001 deVille air conditioning runs cold on the passenger side and rear seat systems, but is warm most of the time on the drivers side. When it is very hot outside the whole system will occasionally go warm, but cycles back cold without much change in driving conditions. I have checked the cooling system fluid levels and topped it off with DexCool. That didn't seem to change anything. I didn't think it would because the engine temp was pretty steady before. I don't think its a refrigerant level problem because it really does blow cold at times. I also don't think the compressor is cycling off and on because it goes for long periods when it is cold on the passenger side and warm on the drivers. I have changed ever system setting, including air recirculating and nothing seems to improve the situation. Got any ideas?