Heater Core How to replace

Here is instructions and diagrams below to show you how to replace your heater core.

Disconnect the negative battery cable.
Drain and recycle the engine coolant.
Disconnect the coolant hoses at the heater core tubes.
Remove the glove compartment.
Position the Rear Anti-lock Brake System (RABS) module to the side.
From inside the passenger's compartment, remove the 7 screws that secure the heater core access cover to the plenum chamber.
Disconnect the vacuum source, but leave the vacuum harness connected to the cover and remove the cover.
Remove the heater core.To install:
Installation is the reverse of removal. Replace any damaged sealer.

If you have AC the system will need to be vacuumed down and recharged.

https://youtu.be/4EqdrBVb0sY

this guide can help as well

https://www.2carpros.com/articles/replace-heater-core

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.