Freon smell coming from vents

SOURCE: radiator fluid vapor coming in through the vents.

You need to get your heater core replaced.
Final answer

SOURCE: 2006 Chevrolet Equinox air vents smell

ive seen this problem before! im betting that you have a mice problem under the hood, they usually get in through the air intake area and stay until there death arrives.look into the airfilter housing.

SOURCE: 1995 Chevy Lumina Has White Smoke (NOT WATER) Coming out Vents

have you checked your converter on the exhaust

SOURCE: bad smell in air vent chevy impala

It is not fixed by an aerosol or scent additive to the air in the cabin. It will only mask the smell for a period of time.

Your cause is the air filter for the A/C system. You can buy a new one at local auto stores.

To replace it, you will need to open your hood. On the passenger side of the car, look just under the windshield at the trim panel under the wipers. You will see several tabs holding down this particular side of the trim piece. Using a phillips head screwdriver, gently rotate the screw pieces out of the tab holder (if this doesn't get it, you'll need to use a small flat head in unison to apply pressure to the screw to come out). There are 3. Once these are removes, gently pull the hood rubber gasket seal up and place out of the way. Note: you won't need to remove it from the car, just enough to clear the trim piece. Remove the trim and you will see a filter. Remove the filter and replace. Installation of trim is reverse.

That will fix your mildew smell from the vents. This WILL NOT fix a mildew smell if caused by interior mildew.

Note: The directions to change this filter are also found in your Owner's Manual if you have it. It is a simple procedure and should take about 15 minutes if you are taking your time.

Thanks for the inquiry.

SOURCE: my 1990 chevy c1500 truck blows a white or light

check your modulator valve on side of trans if you have a 350 turbo. I was having the same problem and that fixed it