The fan speed does change but the air flow does not. Digital control. And honestly as far as my knowledge and research I was able to find goes that seemed like the next logical thing to swap as there is no air filter they have a tendency to clog up. Obviously that was not the problem this time.
Recently bought a 2007 yukon denali xl 1500. When test driving I noticed the air barley blew out of the vents. I thought it would be an easy fix so I went ahead and bought it. I have replaced the ac evaporator, blower motor, resistor, and blend door actuator and nothing changed. I've also...
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