Bill Kay Buick GMC is your Chicagoland destination for new or pre-owned Buick GMC vehicles. We've been serving the Downers Grove, Westmont, and Naperville area for years. Whether you need a new or pre-owned vehicle, be sure to visit our store and see our inventory. We'll guarantee above market value for you trade in, plus the best sales and staff in the area. See how little you pay when you buy at Bill Kay!