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Discussion Starter #1
So before my heat and a/c stopped working completely, it wouldn't turn off! I would have to adjust it whenever I feel too warm or cold. I would turn it from 0-4 but it just would not turn off! At times it would turn off for alittle bit but would just turn right back on.. This happen for a solid 2-3 weeks until... It won't turn on anymore!! Since it's getting cold up here in Maine I need my heat! I hear nothing when I try to turn it on... Help?
 

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If you only had high fan speed it sounds like the resistor network inside the heater went bad and then you probably blew a fuse. The resistors determine the fan speed from 1 through 4. But off should have worked unless one of the resistor filaments fell across some contacts when it went faulty.
 

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Hello JamesWyn,

Sorry to hear about your HVAC concern, especially as the weather is cooling down. I see you’re already getting some feedback here. If you would like me to look into your vehicles warranty information and check to see if there are any open recalls on your Cobalt, feel free to private message me your name and VIN and I’ll look into that for you.

Best,
Sarah
GM Customer Service
 

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This is just a thought but doesn't the blower motor have a relay for it? could the relay have wnet bad that would accout for both the not shuting off and the not comming on.
 

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It might account for the fan not coming on maybe, but it would not explain the one speed no matter where the switch was. He will eventually come back here and post what the solution was I hope. Winter is coming.
 

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Discussion Starter #6
Well my mechanic said i need a new resistor and motor? I brought it to him and then it started to work for a little bit but then it just stopped... He said it was going to be around 300...... My god its suppose to start snowing tmrw!
 

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Motor? Are you sure he's not railroading you? I would ask to see the old motor.
 

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Discussion Starter #8
Motor? Are you sure he's not railroading you? I would ask to see the old motor.
So I get the new resistor, and motor in the mail (motor 50$, resistor $25 better then the 140 and 50 he quoted me at). I call my mechanic to come look at it, he says he can't get it done until 3 days after... so I just go looking in the phone book for a random garage around. I get a walk in apt, and the guy takes a look at it.

Tells me there's nothing wrong with the resistor or the motor, and that the thing that was causing the problem was the climate control panel itself was broken (I looked at the main plug that controls the 0-4, looked like one of the prongs or w/e melted)? I'm like okay how much is it going to cost, and he tells me the part was going to be around 210$... asked me if i wanted it ordered, I was like hell no. Get one on ebay for 50$ expetidited shipping.. installed myself and now have heat!! God If I had known what was wrong in the first place I would have had heat 2 weeks ago!!!
 

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Glad you found the problem, and you now have spare parts.
 
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