First, get a repair manual, such as Haynes or Chiltons. This will help guide you along. You're looking at a full days worth of work if you plan to do the repair yourself. The majority of the time will be taking apart the dashboard in order to get at the fan assembly and fix the door.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!