Button light comes on/off when pressing, but no function. After removing the glove-box I see there is no actuator on the blend door axle. And no loose wires !! Should there be an actuator controlling this blend door ? Or is the recirculation controlled somewhere else ?
There may have been a recall on that model for lack of installation of part, you can go to Chevy' s website and see if there was a recall; if there was you can get this repaired at the manufacture cost and not your own.
Thanks, but no recalls according to the GM website on my VIN number. Does the additional info, added as comments in the other reply made on this question, makes any sense to you?
Yes it makes sense he is talking about the door that blends and regulated the temp in the car for hot to clod and in between and this door will be moved by cables the other doors will work on air flow and temperature settings; depending on your location you can do what I have do in the past to help people get heat or cold, you can manually set the door to a specific position and lock it in place with a hook or screw; this will help set it where you want it till you get the time to fix it properly
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Recirc is not controlled by the blend door - there is another (different) air valve with actuator that is probably the problem.
Thanks for answering. So do you happen to know where to find this valve/actuator?
It's on the hvac box somewhere, but may not be easily accessible. Best bet is to visit Alldatadiy.com and look at location views, or look in the service manual if you have one for this car.
Ok, thanks. So this means that the valve behind the glove box just always should be open? It's a strange setup, especially because the valve is not fixed and therefore rotate occationally to shift randomly between being open or closed, eg when driving on a bumpy road or at hard stops. There are fixing holes for an actuator and the valve axle has grease on it, so it looks clearly as an actuator have been there earlier. And I dont see where recycle air should come from and still pass the air filter if not via this valve. But the missing wires of course speak for a different valve at another location, as you already explained.
I now found two different drawings of the setup for Aveo T300, one with an actuator on this valve axle, and another without !! But the drawing without the actuator does not show an actuator at another position. So still a puzzle to me.
Sorry for this lenghty extra description, but now I think I got everything covered in more detail. Don't know if this changes anything. Your explanation definitely still makes best sense.
That is strange - I have never heard of this. In order to recirc air in the car there has to be a diverter valve which blocks the outside air and connects the box to a vent which is usually on the passenger side inside the car (often on or above the kick panel). Recirc air is not filtered! Depending on your HVAC controls, if what you are looking at is the blend valve, there has to be either an actuator on it or a mechanical cable connected to it.
Yes, strange the word! The recirculation control is electronic so an actuator should be expected. A/C is also Electronic. Temp control and interior air direction control are cables.
When you say cables, do you mean mechanical cables? You realize temp control adjusts a blend door?
Yes mechanical cables control blend doors for temperature and cabin air flow direction. These work fine. It is only the fresh air/ recirculation blend door (no.8 in the picture link) which appears not to have any controls. Link :http://d3d71ba2asa5oz.cloudfront.net/130...
AHA! I see the confusion - you are calling both doors blend doors. With this design, I think the recirc door (8) is controlled by airflow from outside the car. When the car is in motion, air pressure from the front vent would start closing the recirc side, and when stationary would flop back to recirc. This design was probably used to avoid sucking exhaust into the cabin when the car is stationary.
As far as the button is concerned, that may be the one that activates the air conditioning, and will not stay on if the system thinks the outside temperature is too cold. I expect you can get any operating info you need from the user manual (Google it for download).
Recirculation must be controlable according to the manual, as it has been on all my earlier cars. Recycle is a standard function which is useful when it is very cold, or when driving though a stinky or smoky area or if driving behind a diesel van. Makes no sense to me if it is not fully controlable. AC is controlled by another button.
I agree, but an actuator is either there or it's not. Why anyone would remove the actuator (especially since you can't find any wiring for it, or a cable for the door) is a mystery to me. If it were me, I would check the wiring schematic and the back of the HVAC control to see if something is missing, or if in fact wiring for an actuator is actually there and you can trace it. Your only other recourse I can see is for you to contact GM to see what's going on, or to talk to a dealer.
This may be embarrasing but earlier today I actually found The missing wire, well hidden behind the blower at a non-expected location compared to the wiring drawing I have seen. Measuring confirms it reacts with the recycle air button. Thanks for all good ideas and comments, helped me not giving up on this. Case closed :-)
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SOURCE: new blend door actuator doesnt operate
had this problem before... recheck part#....is it for EATC or MANUAL...??? eatc on a manual will only go to half way...sounds like they gave you the wrong part....its a pain to replace wasn't it.....hope this helped you...GL
SOURCE: cold air on passenger side warm air on drivers side
Actuator motors either get a tear in the rubber or a hose is broken and not letting vacuum assist in its opening.
You can try moving the lever by hand and see if the air gets colder on the bad side.
SOURCE: How do you fix the driver side air blend door actuator?
you cannot repair the actuator you need to replace it with new one. These motors turn but get weak with time. if you test it, it works, put it in and it doesn't. this is because the motor is weak, unfortunately GM does not sell these motors separately.
SOURCE: vent door stuck and can't remove glove box
why can't you remove the glove box? You can get at the door from under the dash but it's a ***** to do. try lubing the vent cables unless it uses the vacuum motor, if it uses the vac. motor it will be hard to get to without the glove box being out.
Testimonial: "Thanks! I just don't know how to remove the glovebox."
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