American 1 Credit Union ← View details 670 East Michigan Avenue, Grass Lake, Grass Lake Charter Township, MI 49240 +1 517-522-6191 american1cu.org Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 07:00 pm Tuesday: 09:00 am — 07:00 pm Wednesday: 09:00 am — 07:00 pm Thursday: 09:00 am — 07:00 pm Friday: 09:00 am — 07:00 pm Saturday: 09:00 am — 04:00 pm Your comments * — Required information