Apr 25, 2025
A Tech changing an air filter in a GMC vehicle.

Is your car’s AC not working? That’s a reason to visit your local GMC dealership as soon as possible. Although you may be able to live with a faulty air-conditioning system if it’s not too hot outside, the system does more than keep you cool. It helps keep humidity out of your cabin. Humidity can make the air feel much hotter, and it can also damage the fabric in your cabin, rust metal components, and do other damage.

How to Avoid Your Car’s AC from Not Working

Faulty air conditioning in cars can be caused by a lot of things. Having a low refrigerant level is a common issue, so it’s important to visit the dealer regularly. When you visit the dealer for service, your vehicle’s refrigerant level can be checked and corrected if necessary. Other issues that can cause faulty AC include a bad AC compressor, a broken AC condenser, a broken blower, or problems with your cooling fans.

Some electrical issues, such as blown fuses, can also cause problems with your AC. Stopping by the dealer for interim, annual, and major service is essential, as this lets the dealer find worn-out or damaged parts and replace them, ideally before they stop your AC from working.


When to Visit Your GMC Dealership for Air Conditioning Service

When the Blower Only Blows Hot Air

Cars with a faulty AC system may only produce warm air. This typically points to a low refrigerant level.


When the Vents Smell Strange

Mildew or water can sometimes build up in your vehicle’s system for different reasons. This can cause your vents to produce a strange smell, and the mildew particles can be hazardous to your health.


When the System Turns on and Off

Your vehicle’s AC system may turn on and off frequently while in use. This tells you there’s a problem with the AC, as it’s having trouble keeping your car at the temperature you set.


When the AC Makes Strange Noises

Strange noises almost always indicate a problem with your car. If the AC grinds or squeals well in use, then there’s probably a mechanical issue that needs attention.


When the Airflow Is Weak

Your AC could still produce cool air, but the airflow could be weak at the same time. Your blower motor could be having problems, or your air filters may be clogged.

Need to get your GMC’s air conditioning to make your car nice and cool again? Visit Stan King GM SuperStore in Brookhaven, MS, to get all your car issues fixed today.