Winegardner GMC Buick of Prince Frederick - Calvert County New & Used Cars For Sale, Auto Repair Shop Near Annapolis and Lexington Park. 1. Excludes SL models. Not available with lease, special finance and some other offers. Take new retail delivery by 11/01/21. 2. Excludes SL models. MUST BE A CURRENT OWNER OF A 2007 MODEL YEAR OR NEWER BUICK OR GMC