..............need help..........

No second speed is definitely your blower motor resistor.
Check voltage at blower motor at high and if you have battery voltage you are good,if not your ignition switch is bad and not letting full voltage to your blower motor.
The dodge rams are common to break blend doors.On your year model it has a metal door,plastic ones started in 2002.Find the actuator on the bottom the case and remove it,there is a plastic insert that goes between the metal door and the actuator.
This actuator is calibrated to the control head and sometimes goes out of time and can only be calibrated by factory scanner.
If the plastic insert is broken,I believe it only comes with a new actuator.
I know of an aftermarket company that sells metal ones and can tell you how to calibrate it without scanner,that stuff is on my shop computer.PM me and I will send you the info tomorrow.
TXDart