GMC Superstore is located on John Monego Court off Dublin Boulevard and the 580 Freeway. It offers new and pre-owned vehicles, as well as a full service center. Call the Superstore for details regarding pre-qualifying for financing and viewing of its current new car inventory. The Superstore offers a large selection of cars, including models such as GMC, Buick, Pontiac, Chevrolet, Cadillac, Hummer, Saturn and Saab.