Chevy Trailblazer Blend Door Actuator Reset

On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989. 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. Wait for at least 1 minute.

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Fist thing to do that usually works is perform a reset and calibration of the mode doors and control head.

Chevy trailblazer blend door actuator reset.

Remove the screws from the actuator. Parts counter people call this the upper actuator. Re install fuses start truck and do not touch a c control head for 2 minutes. 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.

You may indeed need to replace an actuator. Are read more. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. This grind or click sound is actually the plastic gears stripping inside.

Disconnect the wiring harness from the mode door actuator the mode door actuator has a white gear extending from one side and is the lower of the two actuators. Pull the actuator from the hvac case. Opening and closing the door can make a difference as the vehicle controls see this as cycle completion. Next start the vehicle and drive it a short distance and see how it performs.

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. Look up see 2 screws remove them and the panel they hold on. With the key off remove the hvac b and the hcav 1 fuses from the rear fuse block under the second row seats. I have a 2002 chevrolet trailblazer ext.

Blend door ok first put you front seat down and back raise steering wheel. Look to left main wire harness needs to be moved to the right up and behind it is th blend actuator 7 32 socket to remove it then manually turn the white peg total labor 30 min. An actuator can go bad in of two ways. This actuator assembly might fit a few other models but double check the part numbers for your car.

Now lay on you back with you head in the drivers floor board. I just replaced the blend door mode actuator which did fix the problem the direction the vents blow but the driver side vents are still blowing warm air.