My 2004 Ram quad cab (107,000 miles) has been having problems with the heater fan cutting out occasionaly but today it quit all together. The only way I can stay warm is to crack a window to relieve cab pressure and go no slower than 50 MPH. I can still switch to different vent modes OK. Also today the heated seats quit working and by the way those are not factory installed, so I assume the dealer could have wired the seats into the same circuit as the fan. And yes I changed the fuse just to be on the safe side although I couldn't tell if it was bad or not for sure.

 

carry a blanket with you.....

 

could be a bad relay for the blower for the ac/heat just a guess as it might be anything .

 

The fan started working again today. I noticed that it starts and stops as I move the steering column. So what I am wondering now is how difficult is it to take the steering column apart.

 

did you happen to find out why it was doing that cause i think mine is the same. i got into the truck and start it then move the colum down and didnt notice that the fan had stopped, till i got out to drop off some mail and when i got back into the truck it was all cooled off inside. when i went to take off again colum went down and fan went off. any help thanks.

 

Loose wire possibly, or a dead spot in the blower motor. A lot of newer chrysler vehicles use the instrument cluster as a center for their bus (temp controls, radio, lots of other stuff), so you may have a loose connection. I'd check the connections first, that sounds like the best solution from the info you gave. A bad relay is also a possibility, although I would think the dealer would have probably wired into one of your 12v sources (lighter, power point) for your seats.