This grind or click sound is actually the plastic gears stripping inside.
Chevy blend door actuator reset.
First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
Replaced clicking blend actuator on my 1999 new body style z71 silverado 5 3 cannot get it to reset disconnected the battery pulled the fuses still nothing.
The topic of how to perform the actuator recalibration procedure on chevrolet gmc and cadillac trucks and suvs has become an ever increasing topic of discussion.
How do you fix it.
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An actuator can go bad in of two ways.
Now it blows hot when set on cold and cold when set on hot.
I have read that many people have had this problem.
This actuator assembly might fit a few other models but double check the part numbers for your car.
On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989.
Parts counter people call this the upper actuator.
For manual systems it does not matter where the a c controls are set but if you feel the need to do something turn the blower switch on i prefer speed 3 and set the temperature.