Weirs GMC is a family-owned Buick & GMC dealership serving Southern Maine, including Arundel, Kennebunk, Biddeford, and Portland, for over 65 years. We offer new and pre-owned GMC and Buick vehicles, certified GM service, parts, and collision repair—all under one roof. Our team is dedicated to providing a friendly, transparent experience from sales to service. Get your rears to Weirs and see why drivers across Maine and New England have trusted us for generations.