'02 Monte Carlo 3.8l. The blower motor works at all settings. The compressor clutch is engaging. The compressor is fine. I have normal freon charge. One line is cold and condensates. The other tube is warm. The A/C button and recirculating buttons are on. Both temp setting are on cold/blue. Why am I just blowing hot air out of both sides. After like 10 minutes it kinda starts to cool vaguely as it still blows hard. All fuses and relays are good. I noticed no water dripping out of the evaporator core though. I crammed a long brush in and out like 10 times and nothing at all happened. no air, water or dirt. just clean and bone dry. Heat works fine. Any ideas ? Thanks.