I have a 2005 avalanche. the ac is not blowing, I have replaced the blower motor and resistor already. the relay is good and the compressor kicks on as it should but I am not getting any air unless it is cool outside and use outside air. I also recharged it to start with. when it gave up at first it was only not blowing on high when I had it all the way on it would only blow at half speed then slowly quit all together from there. the control module works as it should I can change the fan speed temp and vent it comes out of but that is only if I have cool outside air to begin with. the air I get does not actually change speed unless I go faster then I get more air of course. any help is appreciated.