Information on GNC in Jackson, MI 49202 Outlet Note Regular Brands GNC Michigan Jackson 327527 Rating 4.7 based on 97 votes Address 3100 East Michigan Avenue Jackson, MI 49202 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby GNC Outlet GNC Outlet - Ann Arbor GNC Outlet - Adrian GNC Outlet - Ann Arbor GNC Outlet - Ann Arbor People Also Viewed