AC Delco Fan Blade --. 2004 Avalanche 1500 Z66. 2002-2004 Avalanche 1500 (submodel: Base, Z71). 2003 Avalanche 1500 (submodel: North Face, WBH). Promotions: Cooling. 2007-2008, 2010 Silverado 2500 HD LT 2-Door, Cab & Chassis, Except Elec Cooling Fan(K06).
