How many HVAC actuators - is there one for recirculation only?
2011 GMC Terrain;
Exactly 1 year ago I replaced my mode & blend actuators (driver side & pass side) and just today replaced the pass side again!
So as far as I know there are 2 actuators - is there another one I have yet to replace?
I am getting the click-click-click-click sounds from the pass side next to vent top\front (seems to be from the pass side actuator? Thats why I replaced it) every time I start the car.
Also if I have the Recirc turned "on" (light on) and then turn it off it will do it every single time (click-click-click-click)
So seems to be another actuator for the recirculation?
I would be shocked and awfully disappointed if the driver side one went bad again after a year!
Right now its just annoying - everything seems to be working fine, the temp changes as normal, the mode goes from defrost, to front vent to foot vent etc fine.
Edit: Forgot to mention, the actuators were OEM (AcDelco) parts not sure if thats good or not but didn't want to cheap out on them.
Last edited by showavid; 09-10-2019 at 04:42 PM.
Reason: added parts