My heater works on passenger side and rear but only cold air blow on driver side on 2005 Kia Amanti

The heating system blows out hot air on passenger side and rear of car but only cold air blows out on driver side of car

by in Fort Worth, TX on May 21, 2012
1 answer
ANSWER by on May 21, 2012
YOU HAVE A BLEND DOOR ACTUATOR PROBLEM THE ARE STUCK OR NOT WORKING AT ALL