having a/c trouble

there is a blower resistor behind the blower motor that is a common failure. Roy

He is correct. I have the same car and one day a couple weeks ago, I heard this loud sound like something hit a fan. After that, 1-4 would not blow anything, only 5 and it was no longer cold. Took it to the dealer where I bought it and they replaced the blower resistor switch, or something like that. All works well now! Good luck. Btw, the part was around $80. It looks like a big memory card with wires attached.

its your actuator . Over time it builds a residue and sticks keeping it from opening certain speeds