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Hey, guys. My '14 Enclave has been relatively trouble-free since new. It's spent its entire life in Houston, TX, and the odometer now sits at 54K. Twice during the past week, the A/C failed to come on after starting the engine - once when cold, once when warm. All the A/C control lights were off, so I pressed the A/C button. It flashed three times, then went out. I turned off the ignition, re-started the engine, and the A/C came on as normal. Again, this happened twice in the past week!

I've Googled and YouTubed the issue, with no conclusive answer, despite finding that a lot of Lambda vehicle owners have had the same issue. They tried topping off the refrigerant, replacing the hi-lo compressor switch (?), changing out fuses and relays, replacing the ambient temperature and engine coolant sensors, even swapping out the system control head inside the car. None of those seem to be a universal fix, and dealer techs to don't seem to have a real solution. Some folks have said that when this happens to them, the ambient temperature indicator incorrectly shows 55 degrees, and/or the engine coolant temp gauge falsely indicates 160. They return to normal when the A/C begins to work again. Frankly, I didn't notice if my temp indicators also gave incorrect readings.

I don't want to start throwing parts at this issue. But,100-degree days are the norm here, so I really need some help with this. Thanks in advance.
 

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Our 2014 Enclave just did the same thing. Im leaning towards the coolant temp sensor, but I think its failing intermittantly. I'll get back on the forum once we replace the sensor.
 

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Since these "my AC light is flashing" threads seem to come up every time there's a polar vortex, I want to remind people of how the GM system works. Unlike most cars that will let you run the AC any time, the GM system will not operate if the outside air temp is below 40F. It even says this right in the owners manual (which no one ever reads). Since many of us have learned that your defrost works better with the AC on these questions always come up every year when it gets really cold out and people go to kick on the defroster and have their AC refuse to stay on.

It can also be a problem in the system, but if it's below or really close to 40, just wait until it's warmer and see if the AC goes back to normal. I was paranoid the first time it happened and being in WNY I didn't want to wait possibly months for it to get over 40 again so I put the Enclave in the garage with a propane heater on and sure enough once the garage warmed up to 50 the AC worked fine again.
 

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There are quite a lot of problems associated with air conditioners. You will cope with this if only there is a system failure or a driver update. In other cases, you will need the help of specialists. And the problem can be anything. in the compressor. For example, the wear of the gasket. In the condenser, cracks, freon leakage. There are also significant problems with the evaporator. It is best to contact the air conditioning service companies Aircon Servicing Singapore, Cleaning & Repair | SoCool. No one except specialists will be able to solve your problem.
 
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