For those interested in replacing the driver side actuator refer to the following instructions.
2005 chevy silverado blend door actuator reset.
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.
When you install the actuator and turn the system on for the first time it will run through a self check and calibration for about 30 seconds and then wshould operate normally.
These clips can be brittle and break so be gentle.
If you cannot operate the door by hand then the dash and the hvac box will have to be removed to replace the door assembly and that will cost 1000.
Once the panel is off simply loosen the actuator mounting screws and disconnect it from the hvac system.
Now it blows hot when set on cold and cold when set on hot.
Parts counter people call this the upper actuator.
The driver side blend door is accessed by removing the ip instrumental panel.
This actuator assembly might fit a few other models but double check the part numbers for your car.
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.
Some gm trucks in the early 2000 s may have an issue where the temperature may get stuck blowing hot air on the driver s side and cold air on the passenger s.
Inspect the connector for rust or corrosion and clean as needed.
Then replace the unit.
Begin by using a small screwdriver to release the wiring safety clip on the harness for the actuator.
Once released gently pull down on the wiring connector and remove it from the blend door actuator.
I have read that many people have had this problem.
There are many different opinions.
On the gmc acadia and the chevrolet traverse the replacement part number for the blend door actuator is 15 73989.