Q: Fan settings 3 & 4 work fine. I have a 4 door, 2.2L engine. Thank you, Vince
A: Common problem on these cars. The blower motor resistor is shot. Is located beside the heater blower motor under the glovebox and is a b1tch to change. New resistor is around $30. I've had to change mine 2 times because GM cheaped out on the design.