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Old 08-04-2011, 01:28 PM   #1 (permalink)
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A/C won't turn on

We have two impalas here now, both 07's with the 3.5, when you press the button to turn the A/C on, it blinks a few times and turns off. The compressor won't engage, the fuse and relay both check out. There is no power to the fuse. I am operating on no sleep in the humid heat, so I can't figure this out any further atm. Does anyone have any ideas?

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Old 08-05-2011, 05:23 AM   #2 (permalink)
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If the vent dial thing is on defrost I think the ac light blinks as you describe.

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Old 08-05-2011, 08:33 AM   #3 (permalink)
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Doesn't matter what its on, and it doesn't on the other impalas.

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1978 Caprice Classic Landau
350 2-bolt, stock 4bbl
Stock rebuilt TH350
Edelbrock performer cam + intake
Dual 2 1/2" Flowmaster exhuast (waiting to be installed)
Edelbrock IAS Classic shocks
95 9C1 3.08 posi
4 wheel disc brakes!
16x8 American Racing Baja's with 225/60/16 Pirelli P4's

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Old 08-05-2011, 09:43 AM   #4 (permalink)
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Quote:
Originally Posted by kingnutin View Post
We have two impalas here now, both 07's with the 3.5, when you press the button to turn the A/C on, it blinks a few times and turns off. The compressor won't engage, the fuse and relay both check out. There is no power to the fuse. I am operating on no sleep in the humid heat, so I can't figure this out any further atm. Does anyone have any ideas?
I would recommend contacting your local dealer for more specific information. They should be able to assist you and provide a diagnosis. I can also look into this for you with your VIN. Please feel free to contact me via private message. Keep me posted either way. Thank you in advance.

Tricia, GM Customer Service.

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Old 08-05-2011, 11:40 AM   #5 (permalink)
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King, take a deep deep breath before responding.... ^

As to the actual AC issue, I trust you have tried recirc/fresh/etc - all combinations to see if you could trick it on, correct? The manual comments on what the blinking light means - I thought it meant it was not warm enough outside for AC, but that of course makes no sense in August. I will keep thinking.

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Old 08-05-2011, 05:34 PM   #6 (permalink)
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Hehe, I read that one earlier and decided to leave it alone. If I wind up having to send it to the dealer, so be it, but thats a last resort.

I've tried all the settings, yes. Do you mean the owners manual? I'll have to check it out, could mean the ambient temp sensor is bad if thats the case, but wouldn't it still kick on with the defrost? I'm just glad the cars are used mostly at night, you can't even sit in the damn thing in the daytime.

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1978 Caprice Classic Landau
350 2-bolt, stock 4bbl
Stock rebuilt TH350
Edelbrock performer cam + intake
Dual 2 1/2" Flowmaster exhuast (waiting to be installed)
Edelbrock IAS Classic shocks
95 9C1 3.08 posi
4 wheel disc brakes!
16x8 American Racing Baja's with 225/60/16 Pirelli P4's

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Old 08-10-2011, 07:30 PM   #7 (permalink)
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Hey Tricia, if you are actually a human, because you sound like a robot in your posts. Anybody could respond to every single problem thread with "I would recommend you take it to the dealer." That really is not helpful. If I worked for Midas I guess I could answer every post with "I would recommend you take it to your local Midas, man are they intelligent and the technicians so well groomed." It just doesn't help people fix their problem, and comes off as injecting a greedy, government bailed out, corporate fat cat, profit grubbing, nose into the sore wound of somebody with a failed component of above mentioned company. Maybe it's just me...

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Old 08-11-2011, 06:15 AM   #8 (permalink)
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It is surely not just you. ^^

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Old 08-25-2011, 06:42 AM   #9 (permalink)
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may be a bad head. see if you have current to the coil, could be a bad coil.

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Old 08-25-2011, 05:30 PM   #10 (permalink)
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Nick did you ever get this problem figured out?

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Old 08-26-2011, 05:25 AM   #11 (permalink)
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Quote:
Originally Posted by TSS View Post
The manual comments on what the blinking light means - I thought it meant it was not warm enough outside for AC, but that of course makes no sense in August. I will keep thinking.
if thats the case it may be the ambient air temp sensor, I know in my envoy, that sensor went out and kept the AC from cooling the cabin...

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Old 08-26-2011, 09:42 AM   #12 (permalink)
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Nope, haven't gotten to it. I did realize though that only one of the cars has this issue, the other just seems to need a charge.

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1978 Caprice Classic Landau
350 2-bolt, stock 4bbl
Stock rebuilt TH350
Edelbrock performer cam + intake
Dual 2 1/2" Flowmaster exhuast (waiting to be installed)
Edelbrock IAS Classic shocks
95 9C1 3.08 posi
4 wheel disc brakes!
16x8 American Racing Baja's with 225/60/16 Pirelli P4's

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Old 08-26-2011, 05:58 PM   #13 (permalink)
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I hate that there is a computer that needs to know how hot it is outside for it to tell the AC compressor to turn on and cool down the car.

I really hate BCM's. To me they are more trouble than they are worth. I just don't see why I need a computer to run my AC, wipers, 12 volt plug socket, park/head lamps, etc.. I am glad my van and car in this regard are Old School technology.

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Old 08-27-2011, 11:27 AM   #14 (permalink)
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The bcm in my 9c1 says don't turn on the dome light. It's all wired up, just doesn't work cause the car tells it not to.

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Old 08-27-2011, 11:51 AM   #15 (permalink)
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The bcm in my 9c1 says don't turn on the dome light. It's all wired up, just doesn't work cause the car tells it not to.
That adds to my point, why does the dome light need to be controlled by a computer?

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