You're not buying its past. You're buying your future
Real Benefits You Don't Get With Used
The Certified Advantage
Looking for a used vehicle that gives you happily ever after? Look no further.
24-Hour Roadside Assistance2
CPO Scheduled Maintenance Program
Get A Trial of OnStar® Services
3-Month SiriusXM Trial Subscription
Vehicle Exchange Policy
Enjoy a Free Vehicle History Report
CERTIFIED PRE-OWNED VEHICLES AVAILABLE NOW
- Whichever comes first, from original in-service date. See participating dealer for limited warranty details.
- 6 years or 100,000 miles from new vehicle delivery, whichever comes first. Limitations apply. Roadside assistance provided by Allstate. See dealer for details.
- From original in-service date. 6 years/100,000 miles, whichever comes first. See dealer for limited warranty details.
- Within 3 days or 150 miles. Whichever comes first. Vehicle exchange only. Limitations apply. See dealer for details.
- Eligible vehicles receive 1 month of Premium Plan coverage, inclusive of the OnStar Safety & Security Plan and the Connected Vehicle Plan. Services are subject to user terms and limitations, and capabilities vary by model. Certain services require working electrical system, cell service and GPS signal. OnStar links to emergency services. When you select a paid monthly plan within 15 days of activation, you'll receive an additional 2 months of the plan you select at no additional charge. The 2-month extension must be redeemed within 15 days of activation date and requires that you enroll in a monthly service plan and associate a payment method on file. After trial expires, OnStar will automatically bill your payment method each month. Plans containing 4G LTE data will be billed every 30 days by AT&T. You may cancel at any time by pushing your blue OnStar button or by calling 1.888.466.7827. Data plans provided by AT&T. Availability subject to change. Mobile app features require automatic locks and factory-installed and enabled remote start system. See onstar.com for details and limitations.
- Your SiriusXM service will automatically stop at the end of your trial unless you decide to subscribe. If you decide to continue service, the paid subscription plan you choose will automatically renew and you will be charged the rate in effect at that time and according to your chosen payment method. You may cancel at any time by calling 1-866-635-2349. See SiriusXM Customer Agreement for complete terms at siriusxm.com. Fees and programming subject to change.
Welcome to Hennessy Buick GMC
Thank you for making your way to Hennessy Buick GMC, your certified GMC, Buick dealer serving drivers throughout Morrow and the surrounding areas. At our dealership, you’ll find a solid selection of new GMC, Buick models for sale, as well as a carefully inspected lineup of pre-owned vehicles. We also have a well-connected finance center run by a qualified team of finance experts, who can help you get the right loan or lease in a quick, easy, and transparent manner.
Our commitment to our customers continues well beyond the date of purchase. We also have a professional team of GMC, Buick technicians on hand with the skills and equipment to handle all manner of maintenance and repairs, as well as a full stock of authentic parts. Make your way to Hennessy Buick GMC in Morrow today for quality vehicles, a friendly team, and professional service at every step of the way. And if you have any questions for us, you can always get in touch at 770-284-5574.