Why are the vents on my Silverado smoking?

2011 Chevrolet Silverado, 5.3L crew cab 4×4 with 50k miles. After about 30 minutes of driving with the air conditioning on the vents will begin to smoke and the amount of smoke will gradually increase until the temperature is no longer cooling and then the amount of air being pushed out completely dies.

Why does smoke come out of my air conditioner vents?

Fog or smoke coming out the air vents is caused by cold dry air coming in contact with warmer, more moist air near the air conditioner.

What does it mean when your a / C compressor is smoking?

A smoking A/C compressor can mean several things. Did you pick up a sweet coolant smell from the vents? If the answer is yes, it could mean that you are low on coolant, and the smoke is related to a blown heater core. If you are wondering what a heater core is, it is basically a radiator.

Why do I have white smoke coming out of my engine?

If your engine is running rough, and billowing out white smoke, it very well could be either a blown head gasket, or a cracked head. It’s important not to ignore a potential blown head gasket. As the engine coolant leaks into the oil system, the oil looses its ability to properly lubricate the engine. Eventually the engine will seize.

Fog or smoke coming out the air vents is caused by cold dry air coming in contact with warmer, more moist air near the air conditioner.

What to do if your a / C vents keep smoking?

Quick solution is to turn off the A/C when you notice the fog or lack of cooling for 5 minutes with the vents and fan still on. Then just turn it back on for another 30 minutes of cool. More freon would raise your evaporator temperature above the freezing point, but you may miss the really cold air you have now.