According to the schematics i had this was due to the mode control door not working right.
2005 trailblazer floor to dash blower actuator.
Guide the center console into your trailblazer and into position.
Order chevrolet trailblazer a c heater blend door actuator online today.
These units can be either hanging in front of you or in a little more obscure places such as on the side the hvac plenum.
We use a box and the word caution to tell about things that could hurt you if you were to ignore the warning.
Chevy trailblazer ss forum.
I checked codes and found a code b0263 for a fault with the mode actuator.
Air wont blow out of upper vents only dash and i had the same exact problem happen with my 2004 gmc envoy a few months ago.
Connect the wiring connectors and slide the console forward.
The air won t blow out the dash vents.
Begin by identifying the problem either defrost mid or floor or temperature modes not working.
I think its the mode actuator.
It blows out the floor vent and the defroster vent but it won t change and blow out the dash vent.
I first ran into this problem after changing a battery in one of these vehicles continue reading 2003 gmc envoy no a c vent control b0263.
Not through the dash vents.
Free same day store pickup.
A forum for all things trailblazer ss.
This 2003 gmc envoy came in with the complaint that the a c will only blow out the defrost and floor.
Its near the steering column and if you have adjustable pedals its a bear to change.
Then locate and identify the actuator to be replaced.
The air would come out of the top vents when i started the car but it would start clicking then the top vents would close and all the air would come out the floor vents.
Install the rear outlet duct and snug the screw.
Safety warnings and symbols there are a number of safety cautions in this book.
Cost me a couple hundred to get.
Check out free battery charging and engine diagnostic testing while you are in store.
Later i replaced the car s 05 trailblazer battery and the top vents quit working.
Install a new actuator to the case and tighten the screws to 17 inch pounds.
The actual motor was only 100 but they had to remove the whole dash and it was an all day job.
Hvac mode actuator door replacement chevy trailblazer trailblazer ss and gmc envoy forum from what i am reading from this you can access it by just removing the lower dash panel on the driver side and laying on your back you access the actuator with alittle patience and dealing with alittle space.
