I have been searching since last night and can not seem to find the answer.

Out of the blue my vent selector stopped working. air is only coming out of the vents. I turn the knob and nothing happens. I live in ohio defroster is like a must right now. does any one have any ideas where to start looking.

I am thinking maybe its a fuse. the ac wont engage either. fan speed works fine and so does temp control. ( I will double check heat control here in a min)


any idea folks?

 

Added note. Temp control is not working and my dis info center is not responding either

 

Try "mode door". There will be a lot about "blend door", but they are related. There is a door and an actuator. 8,11,7,3 in the drawing.
from: gmpartsdirect.com: Alternate GM Catalog

 

Well then your added note would make me start looking at fuses.

 

Any ideas which ones might be related ??

 

Fuse #10, 16 and relay #30 in the inside fuse box location.

Fwiw. All I did is look in the owners manual for the related ones. It should also be labeled on the box cover.

 

I would go look for my Owners Manual and look, but you could do that, and I wouldn't get cold.
https://www.chevyhhr.net/forums/gene...s-manual-3074/

 

Thanks guys I will start checking. My x took the owners mmanual with her when she left and got her stuff out the car. I had a copy of the it on my laptop but it crashed :/ I thank you guys for the help I will let you guys know asap

 

Thanks guys it was the fuse all went back to normal ty so much for the help

 

Fwiw. Fuses usually don't blow without a reason. Something drawing too much current or a possible short could be the cause.
I hope it doesn't blow again, but don't be surprised if it does.