head gasket problem?

[circmand]

Here is another issue I noticed When my car is running hot My heater works When the car is running normal temperature Sometimes my heater blows out cold air Do you think this is a heater core issue Or could it still be the head gasket

I can only say maybe. I was only aware of the symptoms of the core issue since it happened to me. I can not say for sure if these additional symptoms were happening