NOISE WHEN A/C IS ON

2001 Chevrolet Tahoe

Tiny

Psyco

September, 2, 2011 AT 12:28 AM

When I first turn on car- there's a shoosh noice. This noise happens frequently when I have the a/c on. The air is cold but I get a noise that sounds like it's releasing air. Any ideas?

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Tiny

Jacobandnickolas

September, 2, 2011 AT 12:47 AM

Check to make sure the coolant is full. You may hear it filling the heater core.

Tiny

Psyco

September, 2, 2011 AT 8:51 PM

Coolant is full. The noise sounds as if air is being released for 5 seconds-then another release noise for 2 secs. Very strange

Tiny

Jacobandnickolas

September, 3, 2011 AT 3:44 AM

That's interesting. The only thing I can think of without being there is to check for vacuum leaks under the dash. The vent doors are actuated by vacuum. Maybe there is a leak.

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