Hi and thanks for using 2CarPros.
The most common problem for what you described (no heat) is due to low coolant. First, follow this link.
https://www.2carpros.com/articles/car-heater-not-working
Next, as far as no defroster, do you mean the air flow direction won't change? If so, that would be related to the mode door actuator. Take a look at the two pictures I attached. They show the actuator replacement procedure.
Let me know if this helps or if you have other questions.
Joe
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Saturday, January 12th, 2019 AT 3:04 PM