Hissing noise when I turn on the AC


New member

I bought a 2018 terrain a couple of weeks ago and I see this hissing noise from the car, whenever I turn on the ac. The noise stays on until I go upto 40mph sometimes, the noise is not loud. its like a hiss that accompanies the engine sound for sometime.

Anyone else facing this issue? Any clue what could be causing it?

Any input is appreciated.
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