Heater won't heat!!

mriversjr23 · Nov 15, 2012

Some help please! My heater won't blow hot air. It blows air all day just won get hot. All my fluids are fine. I've tried flushing the heater core. Put a new thermostat in. Replaced the heat blend actuator? And nothing works. It's 20 degrees here in Ohio now in the morning when I drive to work and I drive 45 min. So as you can imagine I'm freezing! So please somebody help with any more ideas. Thank you and god bless in advance.

07 Pontiac g6

greenman · Nov 15, 2012

do you have auto or manual climate control?

If the inlet & outlet hoses to the heater core are too hot to hold onto then the issue is in the HVAC box. Can you hear the temperature control door actuator working? There are three door actuators. Are you sure you replaced the right one?

mriversjr23 · Nov 15, 2012

I only found two actuators. Maybe it's the third one. I have manual climate control. How do I get to the HVAC box?

greenman · Nov 15, 2012

The HVAC box is what the actuators are hanging off of. PM me with an email address & i'll send the how-to for the temp actuator. The door itself may be broken in the box which generally requires tearing the dash out & replacing the whole smash. Hope that is not the case.

Heater won't heat!!

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