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GMC Forum: 2012 Acadia AC Troubleshooting
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Old 07-17-2018, 09:57 PM
2012GMCAcadia 2012GMCAcadia is offline
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Drives a GMC Acadia
Join Date: Jul 2018
Location: Tampa, FL
Posts: 2
Default 2012 Acadia AC Troubleshooting

Not sure if anyone else has tried to tackle AC issues on their own but here goes.

Few days ago the AC stopped working. Fans blow fine but if I press the AC button (snowflake symbol) blinks 3 times and then stays off. I borrowed an AC Manifold Gauge Set and I hocked it up to the High and low pressure valve and it showed no pressure on either side.

I took the bumper off and found that there was a neon green oily substance leaking from where the two lines go into the condenser. I bought an AC gasket kit and replaced the two o-rings because one of them obviously went bad. I also bought a refrigerant refill can. In filling up the low pressure side I did something stupid by sticking a flathead in the high pressure valve and that broke the valve. I then replaced that valve and proceeded to put refrigerant into the low pressure side.

Where I'm at now reading the manifold gauges is that when the car is off the Low is at 20 and the High is at 75. When the vehicle is on with the AC running the Low is bouncing around between 30 and 70 when the Compressor kicks on and off while the High is still staying at 75.
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