My girlfriend's 2001 sunfire GT started losing hvac fan speeds.  First 1 failed.  Then 2, then 3... now she's stuck with only 4 which is quite annoying.
Can anybody track down a How To on fixing it??  I tried searching but couldn't find anything.  
I know it's a common problem, my 98 cavalier did the same thing.
Any ideas?
 
i love how people use the stickys.
i'm baaaaack!!
 
sorry guys, didn't look in maintenance sticky's.  Just tried the search feature (and I suck at picking keywords)
 
Blower motor resistor.
God bless America.