Guaranty Bank, John Road Branch Basic Info Reviews Routing Numbers Map & Direction Name: Guaranty Bank, John Road Branch Main Office: No Service: Full Service Retail Office Location: 3125 John R Rd Troy, Michigan 48083 Oakland County View other branches Phone: 248-925-5974 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer061192669YN071974408YN072471939YN091071598YN275071288YY From: To: