faulty blower motor resistor
The blower motor speed resister is burned out. This part is available from your local auto parts store.
Defective blower motor resistor pack.
worn blower motor
AC compressor clutch relay, starter relay, high speed blower motor relay,
try a blower motor resistor
Blower motor switch. Put it on High and it will blow when sitting still with the engine running.
You need to replace the resistor board locate on the inside passanger side where the blower motor is located . It is attached to the blower motor with 4 screws as I recall and can be readily replace if you are somewhat handy around cars. The part Iam sure must be purchased at the dealer for around 35 dollars.
blower resistor is bad
What about it? Need more info.
pull or push the turn signal lever.
depending on the year some impalas have 6 inch glasspacks
Replace the high speed relay.