heater blower motor on 2005 Chevrolet Malibu

blower motor only works on low and high. How can i fix it to work on all 4 speeds?

2 answers
replace the blower resistor and wire end kit. it is under the right side of the dash by the blower motor.

Roy
heater blower dont turn on with switch any more 1 and 2 went out than the rest how do i fix it