GCS Credit Union ← View details 1833 3rd Street, Madison, IL 62060 +1 618-797-7993 mygcscu.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 08:30 am — 05:00 pm Tuesday: 08:30 am — 05:00 pm Wednesday: 10:00 am — 05:00 pm Thursday: 08:30 am — 05:00 pm Friday: 08:30 am — 06:00 pm Your comments * — Required information