I am trying to remove the old heater core but I am having a problem?

Hello,

There are a few components that need to be removed, like part of the dash, in order to access the heater core and remove it.

Can you tell me exactly what issues you are facing?

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

I have attached diagrams and instructions for the heater core replacement below.

Please let me know if you have any questions.
Thank you.