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  For over sixty years people all over north east Wisconsin, Green Bay to Appleton, Oshkosh to Manitowoc and Shawano to Marinette have counted on Brennan Buick for quality, safe vehicles…the best possible value…and the most comprehensive warranties and service.  Our simple  business philosophy is to treat our customers and associates like members of the family.  We look forward to serving you for generations to come.  Welcome to The Brennan Family!  See our huge inventory of new Buicks. Drive the new 2012 Buick Regal!  Check the 2012 Buick LaCrosse and the 2012 Buick Enclave.