2003 Chrysler Sebring fan speed switch has four speeds total. Blower motor only operates on high. What do I check?

You need to replace the blower motor resistor...

If your ac only operates on high and you never hear the ac blow air on any other setting, than start by checking and replacing your blower motor. Should be in the dash, check your manual on where its located. in mine ( little older sebring) its a pain to get to, but worth it when the ac works on any fan speed.

I had the same problem in my 2002 Sebring. I went to a website for chrysler and It is a common problem with the Sebring. I changed the control unit but it did not work. Then I changed the resistor and wala...It works fine in all 4 speeds. The resistor is behind the glove box by the blower. Disconnect the electrical plug-in and remove the two bolts. Put in the new resistor. I got mine from a junkyard for 15. New the go for 25 or so.