How to remove the heater core?

Hello, I'm Danny.

You will first need to remove coolant from the system before removal of the heater core. Here is a tutorial showing how to drain, flush, and refill the engines coolant:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Here is a tutorial showing how to remove and replace a heater core:

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

I've attached picture steps below on how to replace the heater core on your Tracker. Hope this helps and thanks for using 2CarPros.