After some research i found out this blend door actuator was the cause.
2003 gmc sierra blend door actuator location.
It also applies to cadillac escalade gmc sierra and yukon for the same year models.
Gmc sierra heater blend door actuator locations answered by a verified chevy mechanic.
Ok i have a 2003 chevy s10 i replaced the heater core and radiator but still no heat.
An actuator can go bad in of two ways.
The mode door actuator is on the left and the resirc door actuator is at the top of the dash near the windshield.
This actuator assembly might fit a few other models but double check the part numbers for your car.
Where is the blend door actuator located on the passenger side of my 2009 gmc sierra dual auto climate control.
There is a replacement mode or blend actuator available at most auto parts stores dorman part 604 107 price 39 99.
It is specific to all models with auto a c controls.
I have a question about the hvac problem.
Hi im new to the forums.
Dorman engineered with robust materials to improve durability and performance the hvac heater blend door actuators restore and maintain proper functioning of the hvac heater blend door.
Gmc sierra 2003 hvac heater blend door actuator by dorman.
This grind or click sound is actually the plastic gears stripping inside.
Parts counter people call this the upper actuator.
The blend door actuator is located in the center of the core box up under the dash.
Models with manual a c controls without a factory floor mounted center console trucks that have manual a c controls and with a factory floor mounted center console use a slightly different actuator and.
I have a 2006 sierra auto 4 8l w t.
I disconnected the battery.
Blend door actuator replaces 89018365 604 106 52402588 fits 1994 2012 chevrolet chevy gmc silverado 1500 and 2500 tahoe sierra air door actuator hvac blend control act 4 3 out of 5 stars 172.
First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
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.