800 280-0296 http://www.CastleBPG.com Come to Castle Buick GMC to find great Buick GMCs in the North Riverside, IL area. When you come to Castle Buick GMC, you know we will do whatever we can to make your visit a pleasant one. For more information on a truly excellent Buick GMC dealership call 800 280-0296 or visit http://www.CastleBPG.com. When you are in the Chicago, IL or North Riverside, IL areas, Castle Buick GMC is a great choice. 7400 West Cermak Road North Riverside, IL 60546.