If the heater is on and no heat is felt from the right side dash vents, there may be a problem with the blend air door shaft; a revised part is available to address this concern.Google+
Car Problem Reports
Dodge Grand Caravan No Heat From Right Side of Vehicle
Dodge Grand Caravan Problem
Average Mileage: 181,833 mi (103,000 mi - 230,000 mi)
Visitor, 2001 Dodge Grand Caravan, 198,000 mi
No heat from right side front
Visitor, 1999 Dodge Grand Caravan, 230,000 mi
no heat from right side of vehicle.
how to fix?
All of sudden the drivers side of my grand caravan heat won't warm up but the passenger side does.
Visitor, 2001 Dodge Grand Caravan, 130,000 mi
Mine is a "sport" version. I got it used in maybe 2006. Most of the time I've owned it, the heat hasn't properly come out of the passenger side vents.