Heater blows cold air?

The first thing we need to do is check the coolant level (engine cold) because when the coolant is low the heater is the first thing to stop working. If the coolant level is okay, then you could have a clogged heater core or a heater control valve that is stuck which will be located in one of the heater hoses with a vacuum line connection.

Here is a guide that will help and how to change out the heater core in the images below:

https://www.2carpros.com/articles/car-heater-not-working

and

https://youtu.be/SNRb6pSwYuU

Check out the images (below). Please let us know what you find. We are interested to see what it is.