Heat not working

[Jared Hedt]

I have a 94 chevy and when I change the temp to hot it just keeps blowing cold any suggestions maybe heater core

 

[GMCTRUCKS]

It might be that your heater core is plugged up just disconnect the hoses to it and flush it out with a garden water hose.

 

[east302]

Are the lines at the firewall to/from the heater core hot?

There is a damper in the air box that mixes hot and cold air. It would have a motor actuator attached to it that could be bad. Do you hear any clicking from the bottom of the dash roughly behind the cigarette lighter when hot/cold is selected?


Sent from my iPhone using Tapatalk