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Hey everybody! I have a 94 Corvette and the heater does not put out hot air. Both in/out heater hoses to heater are hot when running. The HVAC system diagnostic codes from my climate control unit do not show any codes. I think I can hear the mix door motor working when I change the temps on the climate control.
Anybody have any ideas or suggestions. Any help would be appreciated! Thanks!
heater core might be pluged pull the knock sensors and drain and flush while empty pull a hose off it and see do not get the opti wet. and ckeck your doors.
Last edited by antfarmer2; Sep 21, 2015 at 08:00 PM.
You see the switch in the lower left corner with multi-colored wires, (mine is a 88) if you pull the switch out, and it is large underneath, you can see you air mix door. Make sure this is opening and closing when you move the temp.up and down. In that hole you will see the heater core.
Heater Not Working
