OER Parts offers a wide selection of Heater Parts for your 2002 GMC All Models. OER Parts offers 2002 GMC All Models Blower Motor, 2002 GMC All Models Heater Box, 2002 GMC All Models Heater Control Valves, 2002 GMC All Models Heater Cores. 2002 GMC All Models Hoses and Parts, 2002 GMC All Models Vent and Duct Parts.