it is essentially a tiny radiator. hot coolant goes in and heats up the fins in the heater core and your fan blows air through the heater core thus heating up the air and you.
NO! THE HEATER CORE IS YOUR CARS HEAT SOURCE YOU CAN BYPASS BUT IS NOT A GOOD IDEAL IN WINTER!
you have a bad heater core
no
Before CHanging the Heater Core, have you tried flushing it? I have a 99' Jimmy and have to do this every year to get my heater to work.
It may need a heater core.
replace heater core in a 1991 Chevy work truck 1500
Yes. The coolant carries the engine heat to the heater core. Without coolant the heater core does not get warm.
AC and heater are 2 different systems. The heater works by channeling fluid from your radiator to a heater core usually located under your dash. Heater may not work due to blockage in the line from the radiator or the heater core under your dash may be faulty.
You may smell coolant when the ac is running but a leak in the heater core won't cause the ac not to work.
did the heater core start leaking? anyway you should have no problem with the air if you bypass the heater core.
have you checked the fuses? if so, maybe the heater core needs replacing
could be head gasket problem. does your heater work? might need heater core , clogged up. do compression test. or bypass heater core and see if that works.