Information on GNC in Mount Clemens, MI 48043 Outlet Note Regular Brands GNC Michigan Mount Clemens 328530 Rating 4.7 based on 97 votes Address 5 South Groesbeck Highway Mount Clemens, MI 48043 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 - Bloomfield Hills GNC Outlet - Algonac GNC Outlet - Auburn Hills GNC Outlet - Auburn Hills People Also Viewed