Q: Heater core

asked by on July 16, 2017

Grandma called me over saying her car was smoking and that it was white. I came over and saw the coolant level was low. I added some coolant and it seems to be holding it's levels. But the heat isn't working which makes me think it's a thermostat. Am I right or am I missing something?

My car has 72000 miles.
My car has an automatic transmission.

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