Diamond Buick GMC
Sales: (866) 268-6470 | Service: (866) 279-1232


  • Wiper Blade Special*
  • Tire Price Match Guarantee*
    *Disclosure **See dealer for eligible brands. Ad, written estimate, or Internet quote for identical tire(s) from a competing tire retailer/installer located within 50 miles of the dealer required during guarantee period for price match. View Details
  • Free Multi-point Inspection*
    Free Multi-point Vehicle Inspection
  • Four Tire Rotation*
    Only at Diamond Buick GMC!
    $15 00 Plus tax

Map and Directions



Welcome to Diamond Buick GMC

As a Buick GMC dealer, we offer all of our great customers a huge selection of both new and used Buick GMC vehicles. Diamond Buick GMC of Alexandria takes pride in the vehicle you drive, the service we offer to customers, and of course, the products we sell.

Looking for a Buick & Morris GMC Dealer?

We are located at 5803 State Highway 29 South. Need specific directions to your Buick GMC dealership? Check out our hours and map page for directions to our dealership.

New and Used Buick Cars and SUVs for Alexandria, MN, Watertown, SD and Morris

Perhaps you are looking for a Morris, MN Buick dealer? Make the short drive to Diamond Buick GMC of Alexandria as we have a great selection of new and used Buick vehicles for you to choose from. Buick features a lineup of Enclave, Regal and LaCrosse. Buick is also proud to feature the all new Encore & Verano. Feel free to check out your local Watertown, SD Buick and GMC inventory online and see if we have any vehicles that interest you. If you are looking for a specific vehicle or just have a question, contact us or come into your Buick GMC dealership today.

New and Used GMC Trucks and SUVs for Watertown, SD and Morris, MN

Searching for a great new or pre-owned GMC truck or SUV? Your nearby Alexandria, MN Buick GMC dealer has a nice selection of new and used GMC vehicles for you to choose from. From the Acadia, Terrain as well as the lineup of Sierra trucks, your Alexandria Buick GMC dealer has the perfect GMC vehicle for you. Stop by Diamond Buick GMC of Alexandria today!

Parts, Service, Financing & Get a Quote Options for Buick and GMC Owners in Alexandria, MN, Morris & Watertown, SD

Need service on your vehicle or maybe need to order a part for your vehicle? Your Buick GMC dealer offers a great parts and service department for your GM vehicle. Contact our service department to schedule an appointment or order a part for your vehicle. Being your nearby Alexandria, MN Buick GMC dealer, we also offer financing for your next vehicle purchase. Our financing department will help you with your next vehicle purchase with us. Looking for a quote on a vehicle? Submit your request via our Quick Quote form and your local Watertown, SD Buick GMC dealer, located in Alexandria, will answer your questions promptly.

Service | Parts Order Form | GM Accessories

Buick: Enclave | Encore | LaCrosse | Regal | Verano

GMC: Acadia | Savana Cargo Van | Savana Commercial Cutaway | Savana Passenger Van | Sierra 1500 | Sierra 2500HD | Sierra 3500HD | Terrain | Yukon | Yukon XL