Both of my damn vehicles are broke down with nearly the same problem: the truck with a shot heater core, the car with a shot thermostat. I can ALMOST do the work myself, but not quite, thanks to my still-gimped wrist. The truck needs the whole dash removed to get to the heater core, and the car needs the intake manifold removed to get to the thermostat. I just don't have the dexterity or strength yet. It's doubly sucky because today is likely to be the last nice day for quite some time.