I have a 2005 Cobalt, and my air does not blow on any setting. All of the buttons on the air conditioning cluster light up when you push the different buttons (ac, recirculate, etc.) but nothing blows! I have tried all the combinations of heat, cold, and fan speeds.

When I turn it on the AC setting, I can hear the compressor engage... so the climate control must be okay?

Is there a fuse for the blower? I checked most the fuses in the passenger side fuse panel, and nothing is blown to my knowledge.

Anyone have any suggestions?

 

does the motor sound like its on, cause all the fins on my blower motor broke off

 

probably a blower motor. they're a pretty common failure on cobalts.

 

Nah, I don't hear any sound whatsoever.


I did not know this. Does anyone have a writeup/thread or any information on replacing this?

 

Bump for some info/pdf's?

 

If your blower motor isn't coming on, check the relay. Make sure it's getting power. If it's getting power at the motor, then the motors bad.

If you're still under warranty, just take it in. If not, get a new blower motor put in.

 

Do you by any chance know which relay is the blower relay? The owners manual doesnt list any of the relays specifically as "blower motor"

 

I just looked and I couldn't find it either. It's probably doubled on to another circuit. Just check the voltage to the blower. It's really easy to get to. Under the dash, passenger side, the only two wires you see going into the motor. Turn your air on and check to make sure your motor is getting power.

edit: here's a diagram compliments of fr33k

 

Novajoe, you are the man, reputation points added!

 

if it is not the blower motor, it might be the resister pack, normally when it goes bad though, the motor will work on some speed settings but not others. But sometimes....

 

Which resistor pack?

 

The HVAC system has a resister pack that has 3 diffferant resisters and a wide open circuit, depending on where your blower speed setting is, it sends current to 1 of the resisters or if it is set to high the current is sent on the wide open path.
The lowest speed setting will send the current through the highest ohmed resister, where there is resistance, there is heat, which left on long enough, can burn up the resister pack...

 

Screw that! Make the dealer fix it FTW.