Gary Lang Auto Group is a twenty-two acre new and pre-owned dealership on Route 31 between Crystal Lake and McHenry. Gary Lan ... g Auto Group has provided the parts, service and sales needs of Buick, GMC, Chevrolet, Cadillac, Subaru, Kia & Mitsubishi owners in McHenry County for over 35 years. Gary Lang carries over 1500 vehicles in inventory and has a fully operating 68 bay service facility. read more