Them are the ones behind the seat I’m guessing. Thanks I did remove them they didn’t look bad so I blown air through them and still no luck. Maybe I get new ones. It blows air good just not hot or cold when switching the thermostatYou may want to start with cleaning the cab air filters, heater and evaporator cores, and the air ducts. These cause a lot of heater and A/C problems.
I’m just taking shots at the simple stuff. You could have a bad switch or a short or bad connection to it.Them are the ones behind the seat I’m guessing. Thanks I did remove them they didn’t look bad so I blown air through them and still no luck. Maybe I get new ones. It blows air good just not hot or cold when switching the thermostat