Attributes . 2007 to 2013 Chevy Silverado 1500 Extended Cab Pickup, 2007 to 2013 GMC Sierra 1500 Extended Cab Pickup, 2007 to 2014 Chevy Silverado 2500 HD Extended Cab Pickup, 2007 to 2014 Chevy Silverado 3500 HD Extended Cab Pickup, 2007 to 2014 GMC Sierra 2500 HD Extended Cab Pickup, 2007 to 2014 GMC Sierra 3500 HD Extended Cab Pickup . Names