GMC Sierra 3500HD Bulb Size by Year
2014 GMC Sierra 3500HDH11/90052013 GMC Sierra 3500HDH11/90052012 GMC Sierra 3500HDH11/90052011 GMC Sierra 3500HDH11/90052010 GMC Sierra 3500HDH11/90052009 GMC Sierra 3500HDH11/90052008 GMC Sierra 3500HDH11/90052007 GMC Sierra 3500HDH11/9005