RE: 04 dodge ram heater switch problem
If it is a mode door, you will have to remove the entire dash. You will also probably have to discharge your AC system so you can remove the box that contains the doors and heater core as I think that's where the doors are in, but I'm not sure. It's tons of fun. Aside from the AC discharge/refill, plan to spend a good half day doing this. That's how long it took me when I replaced my heater core.