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Problems and Service Talk about any mechanical problems you are having

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post #1 of 13 (permalink) Old 09-05-2012, 02:14 PM Thread Starter
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No AC?

Hey all, my girlfriend owns a 2006 cobalt LS that has been giving her quite a headache as of lately. About a week ago her alternator went, which (thank you chevy) Left her stranded on I-95. So after having to get the car towed, and the alternator replaced, now her air conditioner stopped working. She said it stopped working when the alternator went out and her car died, which makes sense. I am trying to figure out why exactly her ac would not be working, now that her charging system has been fixed? Any ideas?
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post #2 of 13 (permalink) Old 09-05-2012, 02:26 PM
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Did you check the A/C clutch fuse?

Alternators fail, don't matter if it's Chevy Ford or Toyota. When the light came on she should have looked for a place to have it looked after and not try to make it home.

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post #3 of 13 (permalink) Old 09-05-2012, 06:51 PM Thread Starter
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Ill check the clutch fuse then, also, as far as I know she only noticed the light was on a minute or two before her car died on her. Whether that's true or not I cannot really say lol. But thanks for the advise, any idea what fuse size this is? Need to figure out if i have a spare for it, or i need to order one.
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post #4 of 13 (permalink) Old 09-05-2012, 07:38 PM
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It's a red 10 amp fuse. There should be a spare to the right of the underhood fuse block.


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Last edited by Coby7; 09-05-2012 at 07:43 PM.
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post #5 of 13 (permalink) Old 09-06-2012, 07:02 AM
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Good morning talon2g,

Did she have the alternator work done at a dealership? If so, and if she would like for us to check into this further, please let me know as I'm available to help as much as I can!

Sarah, GM Customer Service
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post #6 of 13 (permalink) Old 09-06-2012, 07:09 AM
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Maybe they forgot to re-connect the connector to the compressor when they removed the alternator.

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post #7 of 13 (permalink) Old 09-07-2012, 05:15 PM Thread Starter
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Update: I checked the fuse system, and where the large relay is that reads "AC COS" or something to that effect is missing. The red 10a fuse you mentioned is not the ac clutch, but rather the 15amp fuse below it and to the right of it are the ac clutch fuses. I checked all of them to be sure and they are all fine, no french fried fuses. As for the relay, couldnt really check that.

Now when trouble shooting the ac, when you hit the ac button there is no sound or engine hesitation when the ac clutch kicks in, so im guessing your absolutely right coby7, it is something with the ac clutch, but it does not appear to be the fuses (unless its the relay itself, which is possible). But other than that I'm dry on ideas here lol. I engaged the rear and front defrosters and the engine hesitated a tad (my guess is the voltage load on the engine made it skip for a second) but then returned to normal and was only blowing ambient air. I wish I could figure this one out lol, there is no DIC warning, no CEL, no nothing like that which is puzzling for the newer cars.

I was thinking it needed to be recharged, it does have 87k on the odometer, but if it needed to be recharged, the ac clutch would still kick in. So there went that idea.

Thank you all for the help by the way, its better than taking it into chevy for them to charge $60 to diagnose it lol.

---------- Post added at 03:15 PM ---------- Previous post was at 03:14 PM ----------

Quote:
Originally Posted by Coby7 View Post
Maybe they forgot to re-connect the connector to the compressor when they removed the alternator.
Any way you can grab me a picture of the junction for this connector? aside from the astonishingly huge airbox i couldnt really see it. Thanks!
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post #8 of 13 (permalink) Old 09-07-2012, 05:31 PM
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Wait now the A/C clutch is a 10 amp fuse according to my books and it is the one I showed you beside the A/C relay.



As far as the clutch connector I think you can access it from the passenger side wheel well because as you said it is under the airbox.

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post #9 of 13 (permalink) Old 09-07-2012, 05:38 PM Thread Starter
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Ok, is it the plug that has one on each side of it? one facing the front of the car, the other one facing the engine? kinda like 12 and 6 o'clock if you were looking at it head on?

You may be right about the 10amp fuse, I was looking at the wrong one lol. The 10amp that you circled in your previous post checked out good. any way that you know of other than having a tech look at it, to test the relays?
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post #10 of 13 (permalink) Old 09-07-2012, 05:59 PM
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Well if the GM tech screwed it up he should be fixing it. My last visit the tech dropped my right rear wheel, it was and accident but when I left the TPMS sensor from that wheel didn't work. They footed the bill for 169$. That mechanic is responsible to reconnect all wires and give it a test run. He's responsible if you drive away with a problem but don't wait too long.

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