Chevy Tahoe Blend Door Actuator Calibration

This grind or click sound is actually the plastic gears stripping inside.

Chevy tahoe blend door actuator calibration.

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. 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. An actuator can go bad in of two ways. Ck p u suburban and yukon tahoe actuator calibration starting in 2001 whenever the battery is disconnected or when replacing any of the hvac actuator motors mode door or temperature blend the hvac system will have to go through a relearn or calibration process.

This actuator assembly might fit a few other models but double check the part numbers for your car. 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. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.

Just like the existing actuators in both locations when the vehicle had power going to the hvac system the actuator was moved from just below the lowest setting to the lowest setting and then back below the lowest setting. I then tried plugging in the new actuator that i got from the auto parts store. On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989.