ive been following this thread and its been very helpfull,im having the same issues,the center vent will not blow even on high,there is a wierd noise coming from behind the glove box,thought it was blower motor,shut blower motor,still makes sound when cold in morning,when switched on high cannot hear noise,fan sounds great on high,auto and off position give off weird scratchy noise clicking sound,from behind dash.also the fan doesnt change positions when pressing climate control blower locations,air blows from all vents except for the double center vent.