I’m hoping this is a common problem. My heat/ac work only when I put it at the #4 setting which is the highest??!! No idea. Mayb bad blower? Electrical wiring? Please Input?
I think it is the blower as mine only works in the number 3 an 4 marks 1 an 2 are not working. I have changed the switch 3 times an used good switchs an tested them in other car so. I think it is the blower motor it self if it was the wiring I think it work or not work hope this helps or other will put there in put it
Blower motor resistor. Search on it. Common problem.
http://forums.g2ic.com/showthread.php?153957-climate-fan-only-work-on-switch-4&highlight=blower+motor+resistor
http://forums.g2ic.com/showthread.php?150378-AC-only-comes-on-the-third-and-fourth-click-on-climate-control&highlight=blower+motor+resistor
http://forums.g2ic.com/showthread.php?141386-Heater-knob-level-(1-2-3-4)-doesnt-work-except-full-blast-(setting-4)&highlight=blower+motor+resistor
thankyou so much! so the light on the ac knob is linked with this resistor?