This Shroud Compatible with: Cadillac Escalade, 2002-2005 Chevy Silverado 1500, 1999-2013 Chevy Silverado 1500 Classic, 2007 Chevy Silverado 2500, 1999-2013 Chevy Suburban 1500, 2000-2006 Chevy Tahoe, 2000-2006 GMC Sierra 1500, 1999-2013 GMC Sierra 1500 Classic, 2007 GMC Sierra 2500, 1999-2000 GMC Yukon, 2000-2006 GMC Yukon XL 1500, 2000-2006 12" Fan Spec: Maximum Fan CFM: 2300±200 FAN Diameter: 12.05" X 12.05" X 2.5" Number of Blades: 10 blades (Plastic) Amp Draw: 12.70 amps Maximum Fan RPM: 2250 rpm Includes the Mounting Tabs for an Easy Zip Tie Installation Thermostat Relay Kit Instructions: * Activates by grounding electric fans at preset temperature. * 180'F/165'F turn on/off temperature. RED + connect directly to battery. WHITE wire to ignition switch power source. BLACK goes to thermos switch. BLUE wire goes to the Fans