AC light blinking - not working - GMC Acadia Forum: AcadiaForum.net
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post #1 of 20 (permalink) Old 07-05-2010, 10:23 AM Thread Starter
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AC light blinking - not working

ATTN: Moderators. I am very sorry. I think this thread should go to Technical discussion - General. Thanks.


Hi friends,

This happened to me twice already and I am bothered about it.

1. Left the AC on when turing off my car.
2. Within the reach of the remote key, I turned on the Car wirelessly. AC should turn on too (i dont have the auto climate control feature).
3. As soon as I got inside the car (with 5mins after of starting), put the key in the ignition. Noticed the air coming from the vent is hot (hotter than outside). Please note that outside temp 54deg Cel (129F) on the first instance and 50C (122F) on the second.
4. I noticed that AC light is blinking 3times then will be off again.
5. I already turned off AUX, make sure that all Ducts are in VENT mode. Recirculating on/off -> but still AC light will just blink and turn off.
6. I already turned off/on the engine more than three times.
7. Gee, its really hot inside the car and it is pointless to open the window too.
8. After about 10mins of driving, AC just turned on.

I don't know how to reproduce this issue. I dont like to go to the stealership, opps dealership and the will just say, we can't reproduce your issue and car is fine. My warranty will expire this Sept and I am hoping to find this issue so that they can fix it. By the way, this two incidents happend when, 1. its too hot and 2. using my remote engine start with AC on.



I already used search option in th forum but didnt find any same topic. Hope you can help me guyz.


model: 2008 Acadia SLE
location: Kuwait.

Acadia SLE FWD 2008<br />Location Kuwait
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post #2 of 20 (permalink) Old 07-05-2010, 10:38 AM
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Re: AC light blinking - not working

How hot was the car? I'm guessing its some kind of protection preventing the engine from getting hotter. Some kind of primal mode. If it happens when the car was cooler (not recently dove) it could be something else. 130 ambient degrees is hot. That is only 65 degrees bellow the standard engine temp. Not much room to play with especially at idle.

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post #3 of 20 (permalink) Old 07-05-2010, 10:44 AM
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Re: AC light blinking - not working

Take a look at this, it could be several things:

http://www.sandyblogs.com/techlink/2...ator-lamp.html

I would have it checked before your warranty is up.

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post #4 of 20 (permalink) Old 07-05-2010, 11:12 AM
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Re: AC light blinking - not working

After reading the write-up in the link, I think it's worth the trip to a dealership.

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post #5 of 20 (permalink) Old 07-06-2010, 01:03 AM
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Re: AC light blinking - not working

Without auto climate; I don't think the A/C will turn on.........

On the other hand; those high temps there might be some internal control to prevent the A/C from running until you get some airflow into the engine

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post #6 of 20 (permalink) Old 07-06-2010, 04:08 PM
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Re: AC light blinking - not working

Moved to Problems Board, probably more applicable than the Tech section as it sounds like a system malfunction.

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post #7 of 20 (permalink) Old 07-14-2010, 11:13 AM Thread Starter
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Re: AC light blinking - not working

Same issue happened again 4 times already. 3 times just now while driving to office. Recalculating will turn off, then AC led will blink three times and shut off (blower is still on)…
It was 50++ deg cel (52 to be exact in the car). I think this is the common factor of my problem. Honestly, when I am seeing temp reaches 54++ in the panel, I always check my gauges and somehow scared that a problem might occur due to very hot temp. Engine temp will reach 3/4.

Anyhow, I called my agent and he told me to bring the car as it may be having too much gas in the AC system. I am not an expert by maybe right too, isn’t it? Dry part of the AC will be very hot causing the whole system to shut off to protect itself?
Gee, why won’t be the temp here in Kuwait will shutoff just for a while…. Imagine, even at 11pm, temp can easy reach 50deg cell without the sun.

By the way, I am an expat here… that is why I hate the weather. 

I will surely share whatever finding the dealership have. Thanks.

eljones247: Wasn’t able to check the engine temp that time. I would be pretty sure it is passed middle mark, say 110 degs.

mioutlook & Speleos: was too lazy to go the dealership. But since issue is recurring, this time it is worth the visit. Also the cracking sound in the steering needs to be recheck again (omy, this doesn’t go away for acadia).

AA/78U: having auto climate, based on what I remember in the manual, AC or Heater will turn-on depending on what is the weather outside the car.

GeoHawk: thanks.

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post #8 of 20 (permalink) Old 07-14-2010, 11:18 AM
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Re: AC light blinking - not working

Quote:
Originally Posted by dinc
It was 50++ deg cel (52 to be exact in the car). I think this is the common factor of my problem. Honestly, when I am seeing temp reaches 54++ in the panel, I always check my gauges and somehow scared that a problem might occur due to very hot temp. Engine temp will reach 3/4.
Engine temp needle goes to 3/4; I bet this is why your A/C is kicking off; looking forward to see what the dealer comes up with. I would ask the dealer to check the radiator fluid at the radiator itself not the overflow tank

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post #9 of 20 (permalink) Old 07-14-2010, 11:43 AM Thread Starter
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Re: AC light blinking - not working

Quote:
Originally Posted by AA/78U
Engine temp needle goes to 3/4; I bet this is why your A/C is kicking off; looking forward to see what the dealer comes up with. I would ask the dealer to check the radiator fluid at the radiator itself not the overflow tank
Oh. Thank you for pointing that out! I asked them before and they said that I won't be alarmed if Engine temp reaches 3/4 (over 3/4 needs attention already and actions). So I thought engine temp is not related to my AC issue.

I will ask them again regarding this.

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post #10 of 20 (permalink) Old 07-14-2010, 11:56 AM
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Re: AC light blinking - not working

Well it could be; your high temps can cause your engine temp to rise above what "we" consider normal here in the U.S. I would say that most of us find the engine temp needle to be about 1/2 way on a constant basis. I live in Arizona and we normally have temps at this time of the year in the high 30's to low 40's C. You mentioned 50+ C which translates to 120+F so that could definitely make that needle move higher.

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