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GMC Forum: Hissing noise when I turn on the AC
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Old 05-23-2019, 11:34 PM
johnkeerthi johnkeerthi is offline
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Drives a GMC Truck
Join Date: May 2019
Posts: 1
Post Hissing noise when I turn on the AC


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.

Last edited by johnkeerthi; 05-23-2019 at 11:35 PM. Reason: tags
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