Why AC light is flashing 3 times, (Updated, read description for repair) Reference owners manual
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- čas přidán 27. 08. 2024
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The intent here was to express that the owners manual suggest that when you get three flashing lights that it is normal. I strongly disagree but wanted to share the info to help other with the same frustrations. I have found that the Evap Sensor was bad and has now been replaced which has corrected the issues.
IMPORTANT UPDATE 1/01/2018
I found the cause of for the excess moisture inside the cab, I fixed this issue and no longer have ac issues during the rainy and cold season. Check out this video:
• “Confirmed Fix” Water ...
AC NOT WORKING???? I hope that everyone finds this information very useful although it is somewhat dissatisfying and also inconvenient.
I decided to make this video and post after seeing how many people are throwing parts at their vehicle and I have even have seen a couple posts were people are replacing the air-conditioning compressor and then having The very same issue of the air-conditioning not working after spending all that money.
Recently I discovered Some vital information on why the AC light flashes three times on many different make and model vehicles. Typically the first thing that comes to mind is that there is a problem with the air-conditioning unit, which in many cases could be absolutely true.
But after researching this issue I come to believe that many people overlook reading their owners manual to better understand the climate control and I have found that many new vehicles lock out there air conditioning compressor when either the temperatures outside are near or below freezing and when they are too hot and humid to allow the compressor to function properly.
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Chevy Silverado Owners Manual
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Press and hold AC and cabin recycle air flow buttons at the same time while vehicle running it will reset sensor and correct the temperature
You are a life saver 😂
OMG!! IM IN TEXAS I just got in my truck about to finish melting and I tried this and the AC kicked on! Thank you so much definitely a life saver!❤
OMG!!! THANK YOU I HELD THOSE IN AN BAMMMM WORKS!!!
What, you explained nothing.
I have a 99 Blazer, and I've had this problem since the beginning. My AC flashes and goes out whenever it is hot and humid, especially after it rains. Right when I need the air conditioner the most, it stops working. Usually it will go on in a few hours after the rain stops, but once it stayed out for 4 very hot and humid days. Chevy dealer near me is clueless.
I don't know why anyone would downvote this video. It is a perfect place to discuss the problem. I will definitely replace the ambient temp sensor and see if that helps. Thanks for the advice.
I changed the ambient temp sensor and low pressure switch sensor as well....
Still having the same problem.
I'm in TX hot as hell and it has freon.
I found on a 2013 you hold ac button and in cab circulation together it will kick on and bypass itself to AC.😉
Thanks! Answer I was looking for
Legend 👏
Didn’t work for me 🙃
fucking legend sweating my bag off in this hunk of shit at work
@@travis.3 me either😢
I just, had the same problem and it was because my Freon was low in the truck. I went to the parts store bought a can and recharged the system and I worked fine. Before you buy the ambient temp sensor, please check your Freon level.
Ac is a closed circuit if you have to add freeon, then you have a leak
Fixed this issue on of them at our dealership, 1 needed a ambient air temp other needed a recharge and valve on the high side port. Most of the time if its blinking it's on auto climate control and the person has the fan on high..... hook up obd2 live data scanner read ambient air tempture out side if it's wrong then current outside temp then replace it, if it matches then have a vac recharge service done
where is the sensor?
this didn't help me at all, I can read the manual but it doesn't tell me why it keeps blinking even though its hot as hell outside
Mario Patino I realize a lot of people are upset with this very common issue and I bet there will be recalls on newer vehicles. I was only trying to share information I found regarding this issue, sorry this didn't help you, not every vehicle will be the exact same, but with newer vehicles the working temperatures In which the compressor will actually function are very similar. this specific vehicles manual happen to specify when the compressor will go into lockout mode. You can try and clean your ambient temperature sensor. Also there are some videos out there to show you how to override this problem but it will eventually damage your compressor.
+Mario Patino it is possible to override the compressor but in time the compressor will fail by doing so😫
I'm going to try and switch fuses on it first, then go down to the dealership
Mario Patino would you be so kind as to share your findings at the dealer, the dealer here in Washington told us that was how the system is suppose to function.
I think the reason why is obvious one ,the design from the maker is poor and i guess noone thought about rainy and cold at same time
Ambient air sensor. Also a senior up under the dash. Also make sure you have enough freon your ac will not work causing the 3 blinking light.
Dear GOD! Get that senior out of there !!😆
I changed the ambient temp sensor and low pressure switch sensor as well....
Still having the same problem.
I'm in TX hot as hell and it has freon.
2009 denali yukon.
Ever figure it out. Running into the same issue and shop keeps saying it’s a bad climate control module.
Hold recirculate and A/C button at the same for 3 seconds, immediate fix. 🤝
Thank you for the great information. Cheers
Thank you so much that fixed my problem 👍
Thank you that fixed my problem on my 2010 suburban
Thank you very much. Fixed my problem. I’m Driving our work truck ac not working need to open all windows and now its all dusty inside the truck but thanks to you we can close our windows now and enjoy the AC 👍
It fixed the problem for me too. I tried it with the ac on and it didn't seem to work or indicte that it worked with a blinking or light staying on etc so I tried it with the ac off and it also didn't indicate that anything had changed but once I turned the ac back on, the light on the snowflake stayed on for good and the ac is now working. TY for the tip!
Dude!! You just saved my checking account!! I immediately rolled down the window and ta-da!!!!
Thanks I bought a 2008 Impala 3.5 and have to order the manual. It was over 100 degrees in Oklahoma and this happened. I thought for sure it was low on Freon although I am having my system flushed and recharged first chance I get. So thank you because it does come back on after a bit. As this makes sense
Thank you, brother!! Huge breath of relief over here...
By the way, the third knob on the right has a push button select feature. It isn't defrost for the windows. It is for the mirrors. There are no heating elements on any of the windows.
You couldn't be more wrong. Pushing that activates the REAR WINDOW defrost.
Thx ,not sure if it's the ambient temperature sensor but will try ,just thx for the help
HOLD THE AC AND CABIN RECYCLE BUTTONS IN AT SAME TIME TO RESET
This helps so much 🙏 thank you so much
Well I have the same 2011 and mine has done that from day 1 bran new. Go to defrost mode and it changes the reclaim to open. Also the open is normal ac the reclaim is max ac
What????? It blinks when it’s broken like the check engine light of the AC!
Where is the under the dash sensor located, driver side passenger side? does anything need to be taken apart?
Thank you so much I thought my AC is broke
I think mine is because the temperature is too low I will try again when it is warmer.
Good vid, in the cold all the refrigerant goes to coldest area, if refrigerant is all in ur condensor an not in compressor, on start comp will lockup cause ur refrigerant is ur oil for comp.
What about when it's blistering HOT outside and the AC light blinks when you try to initiate it?
thanks for the video I was getting frustrated just I just left my AC off for about 15 minutes turned it back on no problems
@Russian Bot, I would definitely check the VIN on your vehicle for recalls👍
@@TweekerDan1984 I think it was due to having the defrost on heat in the middle of Florida summer.
This is useless, thank you for reading the manual to me
I was simply sharing that the manual says this issue is normal for the HVAC system, but after further research and if you look into some of he updates on this post. The fix for this issue has been to clean and/or replace the ambient temperature sensor.
Interesting. It’s 80 degrees outside and my AC still won’t turn on. Pretty sure it’s broken and a crappy design that should have come with the option to bypass it entirely.
I believe after learning much more on this specific AC system there’s definitely issues that should be covered under warranty. I’ve read some people have actually cleaned and/or replaced their ambient temperature sensor and it has corrected the issues.
Thank you
It does it no matter the temp now it’s spring and still does it. I was working great then I stopped driving it for a few weeks cause gas went up in price. Started driving my car
Thanks for the good info!!
Pointless video. The light flashes for a multitude of reasons. This video is for the people that think changing your engine air filter will fix your running rough issue.
But if it's hot outside and it's still doing it what's going to be an issue
ahhhh this saved me from unnecessarily adding additional freon
Too late for me
I need help my ac button only stays lit when I hold it and that keeps the ac clutch engaged
@Eric Goodwyn have you tried to Hold down the ac button and the recirculate button for about 5 seconds simultaneously.
@@TweekerDan1984 no I haven't tried that.. what exactly would that do?
@@EGOODWYN86_Hey did you get it fixed?_
@@DoctorRickSanchezit's working now but I think there's a problem with the ac compressor
Dude you didn’t address anything!!!
You rambling about a totally different issue... Horrible video!!!
If you read through the comments this issue can now be corrected by your local dealer. Also I was only sharing my frustration that the owners manual states that this issue was completely normal.
Thank you. You just saved me from embarrassment and probably $$$. Chevy impala 2012
I have a 2009 Silverado that keeps switching from recirculated air back to outside air, and every time I try to turn recirculated back on it just switches right back. It’s usually when it’s really hot out. I keep the vents blowing on feet and face. So it’s not from the defrost button. Just wandering if it’s some type of sensor or if it’s an electrical problem.
I’m actually unsure about this but It could be your resistor overhearing from working too hard. Maybe the resistor is set up to automatically switch settings under certain conditions so that it doesn’t overheat and short the circuit.
I just had that problem, it turns out the cooling fans were not coming on. Replace the cooling relays and it will work.
Thanks Dan!
Press and hold acand recirculate at same time for 5 secs or so
My 2011 Sierra short cycles the compressor and thus gets no cooling. I had the system evacuated, vacuumed and recharged with 25.6 Ounces of R134 and it does the same thing. I also replaced the low pressure switch to no avail. Any idea what it could be?
mine does this under normal conditions. it just blinks now what
Ty bud
Chevy can catch these hands. Such a stupis design. If i want ac. Then the ac should turn on.
Thanks lol was like wth had no problem before winter lol
Mine was simply because there was no Freon/refrigerant
Thanks for reminding me to RTFM = ) . Winter came to Sweden and I thought something was wrong with my truck. Turns out it was -1 Celsius
Ok so what I getting from this is that my amb sensor might be bad, but idk so what's going on with my truck is the a/c works. But only sometimes. I live in az and its always hot, it gets humid af when it does rain. I'm not sure as to of why it does this but now I have a better understanding sorta, And until I watched this I noticed the 3 blinks on my ac buttons, any idea what i should do,
Press as hold acand recirculate at same time for fee seconds
thank you for video , i have a 2001 tahoe first time that the ac button flashed 3 times for me, i work about 10 miles from my house as i drove my car i kept trying to have the ac on, when i got to my job and i pulled into parking spot , i sat in my car for a few minutes i pressed the ac button and it stayed lit, im fron ny and the weather has been cool mid 30's last night and it was under 40 during the day
Victor j I'm very please to hear this has helped you. Thank you for taking the time to let me know.
Yep mine has been doing same thing on my 2002 Tahoe. just replaced all the a/c components when the weather was still warm 75 deg. Now when it rains or gets down to 45-50 degs it won't turn on compressor. Just gives you the annoying 3 blinks. Bummer . Should be some way to bypass that???
My 2014 tacoma trd 4x4 does the same crap.....my bros has an 2011 and the other bro has 2014 with no problems
Is he serious???
My ac was working fine until I worked on some fuses and now no ac any help I checked my fuse and relay.
Did you disconnect the battery before working on the electrical, you may now want to disconnect the battery for a 20min in case there is was a glitch in the electrical.
Had the same problem, replaced the elec run board fuse ,30A, fixed it .
You should of made a video...Because what I just watched was a bit painful
where is the fuse located?
Did you fix this plz help my ac won’t work and it gets up to 100 ‘f here
Having the Ambient Temperature Sensor replaced has been a know fix this issue.
TweekerDan1984 yea I tried that still nothing
Thank you!
I did find that the manufacturer now has a recall, also if there is excessive moisture in the vehicle it can cause similar issues.
Trying to get information on my Mercedes, not a G M product.
This has nothing to do with getting my air on not heat. It's 88 here want my air on.
Hey @Jeffrey Hopkins the compressor is turned on for the defroster as well as the air conditioning so the issue is related. The manual indicated these issues are normal under certain circumstances but After many years the dealer actually had a recall and now has a solution when encountering these issues. Hope that helps.
@@TweekerDan1984 No recall for my 08 ltz suburban 😔 for that issue. I'm hoping it needs charged.
i have a chevy impala 2012 and sometimes my ac flashes for 6 times and cut off, it eventually comes back on but sometimes it does that and its not close to freezing is that the same issue?..... everytime i take it to the shop it dosent do that
The problem is the evap temp sensor about $25 on E-Bay so just fix it right the first time!
ItBseCtioN8. Ambient temp sensor*
Where is the sensor located on the truck?
Your definitely a tweeker because you explained absolutely nothing about how to fix the flashing a/c snowflake button.
Glad we all know what the prob is now how about a solution , duh
@@eddietaylor978 I haven't figured mine out yet. Sweating my ass off in this 90+ degree weather
Lol where are the sensors?
Sensor is typically in front near the cooler or near the firewall on the passenger side.
@@TweekerDan1984 ok thx. But it was the relay,I had a blinking light 6 times .
This literally did nothing to help my situation... Useless!
So no answers for anything huh
Many people have replaced the ambient air sensor and also another sensor under the dash and that has corrected this issue. The manual is misleading.
Also I found that the cab had excessive moisture in the cab under the carpet, once I repaired the cause for the moisture the AC issue went away.
This is a poor excuse for the fix!
This was not helpful at all thanks for noting
Ur fired
Duh 🙄
Talk faster, data is not free
You people are pathetic lol. It’s old post I know but for the love of god if this didn’t fix your shit do some more research don’t expect everyone else to do it…
Cappp
Gau as video
I waste of 3:31
OMG Please try and understand what you are reading before you post a video!! The manual states the recirculate mode cannot be selected it does not mention the button you are pushing !! are you kidding me or what? what is wrong with kids today with a book in hand and still get it wrong?
Cuz, you said NOTHING helpful, only talking in circles. MAYBE YOU SHOULD RUN FOR PRESIDENT
Hello, there is a recall/repair in the description. When this video was created it was simply to share that the manual states that our issues with the heat and cooling are normal. It was very frustrating but at least now the dealer has a TSB for this issue.