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Q:

Heater/ac only blows on hi speed doesn't work on any other speed on 2003 Chevrolet Impala

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
I already changed the climate control but still only works on hi speed only is there any thing else I can check or replace
(3) Answers
blower motor resistor
Could be that the other speeds of the fan is burned out and you might have to replace the blower motor.
The "resistor pack" in the blower duct is bad....