Probably not debris. Could be the heater programmer or control module in dash. Control module has four resistors that overheat in circuit board and cause solder joints to loosen and malfunction.
To answer your question there is an actuator on the passenger side as well. There are three small 11/32 bolts fastening the actuator. You can remove the actuator (See picture) and move the blend door rod (end of white rod under actuator counterclockwise with your fingers. Down fully counterclockwise is heat mode.
Wednesday, January 19th, 2011 AT 12:33 AM