Gm Blend Door Actuator Recalibration

First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.

Gm blend door actuator recalibration.

One source suggested using a scan tool. Long gone are the cables and rods jutting out of the firewall to operate the heater control valve or a vacuum unit pulling a blend door open. The two wire actuator is the simplest of them all. 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 actuator assembly might fit a few other models but double check the part numbers for your car. Generally an 8 to 12volt signal provides the needed voltage and ground from the control head to the actuator motor. 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. These days it s electrically driven actuator motors modules accomplishing the job.

This grind or click sound is actually the plastic gears stripping inside. It would not actuate any further even when not installed. Of course it had to be the one that is hard to get to. 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.

On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989. Blend door will not open to cold on passenger side. I am diy don t have a scan tool so i chose option 2. Did some searching multiple sources suggest recalibrating blend doors.

An actuator can go bad in of two ways. Pull two hvac fuses from under the hood and this is where the impala is making me nuts there are no hvac fuses under the hood or in the interior fuse block. Parts counter people call this the upper actuator. There are several types of actuator motors used in today s gm cars.

Replaced it today and the new motor still will not open to cold.