Hours Of Operations GNC Michigan Howell GNC Hours of Operation and Locations in Howell, MI 4.9 - 150 votes 2 Locations in Howell GNC Hours Category: Beauty & Health GNC - Howell, MI 48843 3641 East Grand River Ave(517) 548-0826 View Store Details GNC - Howell, MI 48843 1002 East Grand River ave. View Store Details Explore HowellView More Apparel TJ MaxxBig LotsH & MCarharttCarter's Sports TargetNikeSkechersVansColeman Jewelry ZalesKohl's OutletKay JewelersChico'sCarson's 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