2003 Silverado Blend Door Actuator Reset

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.

2003 silverado blend door actuator reset.

You ll likely be replacing actuators eventually. You can reset the blend door calibration by pulling the hvac fuse for 1 minute and then reinstalling and turning the key to run. First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or. I pulled the hvac fuses in the cab and engine bay but i am not sure if that is necessary or not.

There are software updates for door overruns as well caused by the flexing of the doors and the counts going below 0 or above 255 during the reset. Scan the hvac for codes. 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.

When heat is built up inside of the heater core the actuator door shifts to allow the hot air through the system and when the climate control is turned to cool the door flaps in the other direction closing off the heater core. A failed actuator feedback circuit which causes the counts to fluctuate during the reset is the main issue. There are many different opinions. If there is still a problem the actuator for the temp blend door may have failed.

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. It takes about 30 seconds. An actuator can go bad in of two ways. This article applies to the chevrolet silverado 1500 1996 2006.

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. Now it blows hot when set on cold and cold when set on hot. The heater blend doors act as a gateway to the vehicle s ventilation system. 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.