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.
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Sunday, August 22nd, 2021 AT 6:41 AM