Fuel filler neck leaking?. Dorman 577-326 Fuel Filler Neck Tube. Fuel Filler Neck. Fits what vehicles: 2007-2014 Chevrolet Tahoe, 2007-2014 GMC Yukon, 2009-2014 Cadillac Escalade, 2009-2010 Chevrolet Avalanche, 2009 Chevrolet Suburban 1500, 2009 GMC Yukon XL 1500, 2014 Chevrolet Suburban.
