Hours Of Operations GNC Michigan Dewitt GNC Hours of Operation and Locations in Dewitt, MI 4.9 - 150 votes 2 Locations in Dewitt GNC Hours Category: Beauty & Health GNC - Dewitt, MI 48820 1161 e. Clark Road, Space 118(517) 669-6317 View Store Details GNC - Dewitt, MI 48820 13157 1/2 Schavey Road View Store Details Explore DewittView More Apparel CarharttCatherines Sports Bikeworks Jewelry AvonMeijer Recommend For You Cotton on Bally Total Fitness Eastern Mountain Sports Trader Joe's The Athlete's Foot Diane's Beachwear Bottega Veneta Hanna Andersson Louis Vuitton Sportsman's Warehouse