About Us


Welcome to Hennessy Buick GMC

located in Morrow, Georgia proudly serving metro Atlanta and surrounding areas including, Stockbridge, Fayetteville, Jonesboro and Atlanta with a variety of New & Used Buick and GMC models.

Hennessy Auto Group is family owned and operated and has been serving customers for over 55 years! Our long term employees take pride delivering our mission "We are here to earn customers for life." It is a simple but powerful statement and everything our team does is with the highest of standards and at excellent value for our customers. We also have one of the best financing teams providing competitive financing options, not only for drivers with perfect credit, but special financing and great rates for those with less than perfect credit.

We are committed to providing a great selection of Buick and GMC vehicles at an aggressive price. We also have one of the largest inventories in Atlanta with over 1000 new and pre-owned vehicles in stock. We offer a full line up of new Buick and GMC models including Encore, Terrain, Envision, Lacrosse, Enclave, Acadia, Sierra, Yukon, Yukon XL and many more. Our pre-owned inventory consists of over 500 vehicles ranging from everything from Chevrolet, Ford, Chrysler, Jeep, and Dodge to imports such as Acura, Audi, BMW, Honda, Hyundai, Lexus, Toyota, Nissan, Mercedes-Benz, and Mazda. Whether you're looking for a $7,000 commuter vehicle or the finest $75,000 luxury vehicle, we've got the right one for you!

We hope to welcome you to the Hennessy family with an opportunity to serve all of your driving needs. We look forward to continuing to provide the finest service possible and to make you a loyal Hennessy customer.

Phone Numbers:Sales Hours:
  • Mon - Fri9:00 AM - 8:00 PM
  • Sat9:00 AM - 7:00 PM
  • SunClosed
Concierge Hours:
  • Mon - SunClosed
Service Hours:
  • Mon - Fri7:00 AM - 6:00 PM
  • Sat8:00 AM - 4:00 PM
  • SunClosed
Parts Hours:
  • Mon - Fri7:00 AM - 6:00 PM
  • Sat8:00 AM - 4:00 PM
  • SunClosed

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Hennessy Buick GMC 33.5565, -84.3469.