Heater not working

First thing to do is check that you still have circulation with the heater on, both heater hoses should be hot with the engine at temp, check this and let me know what you find.

Mark (mhpautos)

To fix the heat you need to start the test at heater hoses under hood
with engine running and at operating temp heater fan motor on high open hood and check heater hoses by the firewall
if both hot you have a blend door issue inside under the dash on the HVAC box
if one warm or hot and other not heater core need to be flushed
isolate heater core and flush
let me know

Can you describe what is happening with the heater? Does it work at all? With the engine running, hot, and the heater on high, do both heater core hoses get hot? Also, is the coolant full?

Try replacing the thermostat and see what happens-if it continues -could be an air mix/blend/mode door problems-to incude vacuum/actuators and the HVAC control module.

Hello, I'd check voltage and ground at the blower motor, purple wire is voltage, black is ground. First I'd make sure the blower motor isn't faulty, go from there.