Bad control head :!: :!: Go out to PDC under hood look for HAVC fuse make sure it isn't blown. Not sure on your type of car i work on Chrysler/Dodge but they are just about the same. Also check and see if there is a fuse panel inside. It is either no power supply or the Control Head is faulty :!: You see after 2002 heat and A/C is controlled by electronic accuators, Cable or vacum is long gone, Small electrical motors moves door's inside heater box :!: Another thing is does your car have auto temp control :?: If so it has a fin sensor that is in the heater core if set on auto it will not let blower work untill core reaches a set temp :!:
Mark