Hi, I have a 2002 Pontiac Bonneville V6 with 120,000 miles on it. My heater is not working. I have replaced just about every component to the heating system possible. I've done the coolant check (not low), I've bled the air out, and checked my fuses and my heater hoses are both not but I'm still getting cold air. Could it be the electronic control unit not functioning properly? Moisture got to it? A ground wire? I'm so ready to throw my hands up and set this car on fire lol. Please help with some answers. I have watched some of your videos about heating system not functioning and have tried just about everything you mentioned in there. I know my car isn't a very common car, please help. Thanks!
AHisbrook {black}:smile: {pear}:exhausted:
If the heater core is not plugged up and coolant is flowing through it (you say both hoses are hot), then your blend door is probably stuck in the full AC position.
It's got to be either the blender door actuator or the heater control valve or both. They are available from Carid.
