Clueless Problem...

Hey guys,

Totally clueless on this, but my heater controls will only blow out the defrost vents.

Blower Speed Works, Hot/Cold works, its just that the vent selector will not change vents, it changes the speed to correspond with like the floor setting yet it still blows out the defrost vents.

Any ideas?

thanks

I should have searched... well the problem was the vac. hose by the driver side firewall. Hose cracked off.