Blower Motor Problems on 1999 Buick LeSabre

Does the cooling tube on my blower motor serve a purpose? I am missing the tube and wonder if i'm doing any harm not having it.thanks in advance.

Asked by for the 1999 Buick LeSabre
I think what you are referring to is a black rubber tube that allows coolant to vent away out the firewall in the event the heater core would fail instead of just having it flow through the heater motor and onto the carpets.