No heat to defrost the windshield? Roasting in the summer heat?

The vehicle's heating, ventilation and air conditioning system is composed of three sub-systems

that all work together to provide conditioned air to the vehicle cabin.

The heating part takes heat from the engine coolant and transfers it to the incoming air.

The ventilation part moves and directs the air within the cabin.

And the Air Condition part cools and dehumidifies the air within the cabin.

When they are working normally they keep you comfortable during all weather conditions.

Key components of the Heating Ventilation and Air Conditioning system include:

Heater Core, Thermostat, Blower fan, HVAC Controls, Condenser, Compressor and Evaporator.

Leaks, worn or malfunctioning components can cause a loss of heat, poor or no air flow,

insufficient cool air, noises or objectionable odors.

Coolant leaks can also cause engine overheating which can severely damage the vehicle's engine.

Before the weather gets too hot or cold have your vehicle checked. Visit your local ACDelco

service center for expert service and quality parts.