Things to Know if Your Car's Carpet is Wet on the Passenger Side - Service Information at Capitol Chevrolet

Generally, it's best for the interior of your vehicle to be dry. A wet carpet can quickly stink up your car with an unpleasant mildew smell, making for a less enjoyable drive. While it's possible to clean the carpets, the problem may continue happening unless you address the cause. Because we want to help you learn more about your Chevy, we've put together a list of reasons you might find wet carpeting in your vehicle.

Car carpets drying in the sun

5. Human Error

Moisture isn't exactly rare in Oregon, which means that it's easy for it to get inside your vehicle in ways that are completely accidental. Perhaps you left your sunroof open by mistake, or maybe your kids ran into the car with boots still dripping. It could even be that someone spilled a large drink on the carpet! While these things are a pain to deal with, they're not a sign of trouble with your Chevy.

Air conditioning controls

4. Leaking Weatherproofing

The doors, windows, and windshield on your Chevrolet are sealed with weatherproofing that's designed to keep the weather out of the cabin. Over time, these seals can become cracked or punctured, causing leaks. When this happens, it's easier for the rain to find its way inside through these various cracks.

3. Clogged Sunroof Drain

If your Chevy has a sunroof, it may well be a suspect. The sunroof has a drainage system that's designed to keep excess rainwater from dripping into the cabin. If the drains in this system have become clogged, the system may no longer work as it should. In fact, the drains could overflow, making it much more likely for water to leak through the sunroof's edges.

Heater core

2. Clogged A/C Evaporator Drain

The HVAC system inside your Chevrolet does more than just keep you warm or cool. The A/C evaporator also takes moisture from the cabin and removes it,  draining it onto the ground by way of a drain. This way, you won't have to deal with excessive humidity. But if the evaporator drain is clogged, the humidity collected from your vehicle may not be able to effectively drain out. In time, it can overflow and leak back into the cabin of the car.

1. Bad Heater Core

The way that your car's heater keeps you warm is ingenious: it uses heat that your engine is already generating. Part of the HVAC system is the heater core, which is connected to the engine's cooling system. After the coolant has picked up heat from the engine, it runs through the heater core. When you turn on the heater, fans blow the hot air from the heater core into the cabin.

If you've noticed wet carpeting that's only on the front passenger's side, it may be that the heater core is leaking. In this case, the leak is actually coolant, not water. As you can imagine, a coolant leak can cause engine damage, so it's best to get this taken care of right away.