Clicking when Climate Contro fan is operating

chevrolet

#1

2002 Chevy Trailblazer

Replaced blower motor resistor (manual temp control).
Now I hear a clicking no matter what speed fan is set on.

Whatcha think?


#2

Does the clicking speed up with the fan speed?


#3

Broken actuator in blend door is my guess. Not an uncommon problem. Now which one? you might check trailvoy.com for info.


#4

If the clicking frequency gets proportionately higher with higher fan speeds – as queried above – suspect debris, leaves and small sticks, has been sucked into the blower cage area. If the clicking frequency is independent of fan speed, suspect Barky’s idea.