Ok so I just replaced my fan clutch because it was broke come to find out and my engine has been running hot for the last week now. Finally figured it out glad it was simple. and a quick 50 buck change out. My a/c problem of blowing cold to cool is now fixed because of fixing the fan clutch. Although it's still not blowing as hard as it used to about 20k miles ago. The blower motor up by the passenger dash has made a few whining and ticking noises for the past 2 weeks every now and then. I'm going to change it out. I'm hoping that is what it is. I have replaced the resistor and no difference so I'm hoping that is it. Anyone ran into this problem or think it could be something else? Thanks in advanced

 

I can think of one thing. Turn the truck on max a/c. Feel if there is any air blowing to the defroster or floor vents. If there is air felt everywhere it's the mode door.