The vents on my 2004 Dodge 3500 diesel stay on the front vents and will not change with the knob. After reading about this problem it appears to be the blend doors as well as the HVAC component. There are numerous complaints on Dodge websites about this. The cost is over $600 dollars due to the labor of pulling the entire dash out of the truck and replacing the parts. The parts are around $50 dollars. They used cheap plastic that wears out.

- Littleton, CO, USA

Motor vehicle defect notification for Dodge Ram 2004, failure of windshield defroster. The defroster would not become warm enough to defrost, defog the windows.

- Algona, IA, USA

There is an exhaust leak coming through the air vents when the HVAC fan is turned on. I was a little dizzy & had a headache after a long drive back home from san antonio. After talking to a physician about my condition, he felt that the cause was most certainly carbon monoxide poisoning. I have mentioned this problem to the dealership & they have been unresponsive. They say that they have never heard of this problem before & there is no fix. I've researched the internet & found many others that have experienced a similar problem so I know I'm not alone. There is even one gentlemen that believes he has the fix. Apparently Dodge didn't cover some of the holes between the engine compartment & were the HVAC system draws fresh air for the cab. This needs to be fixed as this may injure someone terribly.

- Manvel, TX, USA