First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
Chevy blend door actuator calibration.
I have cleaned up the original actuator and it worked fine for 6 to 8 months or so.
Gmc yukon and chevy tahoe blend door calibration.
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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.
This grind or click sound is actually the plastic gears stripping inside.
A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.
If there is still a problem the actuator for the temp blend door may have failed.
On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989.
Ignition off pull the hvac ecas fuse for 10 seconds reinstall and start vehicle without touching any controls wait 40 seconds for the control module to self calibrate.
In this video we look at my 2004 gmc drivers side blend door 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.
Parts counter people call this the upper actuator.