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Discussion Starter · #1 ·
I'm having an hvac issue with my 06 duramax and winter in fairbanks Alaska is right around the corner.

Was idling with my ac going awhile back and all the air just randonly shut off.

I now only have heat/ac when going down the road at highway speeds, and it seems to be just with whatever airflow I'm getting from driving.

I've checked all my fuses, blower motor, new resistor. Only thing i can think of is maybe my climate control module (the little screen and dials that control it on the dash), I've seen the display flicker before but nothing like completely shutting off. I can switch it from defrost to vent and from hot to cold but still only get air flow at highway speeds. Any thoughts?
 

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did you try putting power direct to the blower? did you check the resistor wiring, had to replace mine on the 03
 

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