(USED) 2004 GMC 8500 - HEATER CONTROL ASSYS- Part Number : 15191308 Settings: Fan Speed, Temperature, Air Position, Material: Plastic, Reference images for condition For more information about this item, give us a call. We ship Worldwide!. (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY. ELKTON, MD 21921.