Bill Kay Buick GMC is your Chicago area destination for new and pre-owned Buick GMC vehicles. We've been serving the Chicago, Downers Grove, Westmont, Lombard and Naperville area for years. Whether you need a new or pre-owned vehicle, be sure to visit in store or online to see our huge selection. 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!