LS Dual Climate Control

[DwDrummer]

I think the passenger side of my dual climate control is going out, me and my fiancée was coming back from a concert last night and I was freezing her out so she went to turn the heat up on her side and it would not blow nothing out but cold air. I was wondering if it might be in the switch or if the passenger side heater is shot? Any help will be greatly appreciated.

Thanks,
DwDrummer

[DwDrummer]

anybody??