My fan control switch only works on the 4 and 5 setting. I changed the control head and that did not fix the problem. I am now trying to replace the resistor, but can't find it. does anyone know were it is located. please help.

 

Not knowing these vehicles to that detail, I can only tell you that it is generally in the air duct soon after the blower fan, in direct airflow (for cooling the resistor pack). Locate your fan motor, then look for obvious electrical dohickeys in the air duct right next to it. Should have a bunch of heavy gauge wires going to it.

 

If it a 01 and newer its by the blower its got 7 wires in a flat plug colors are (from memory)red,black,orange,blue,purple, I cant remember the rest.