Frequently Asked Questions


How do I replace my Cadillac key?

For security purposes we recommend you contact Hennessy Cadillac regarding any key related inquiries.

What is Cadillac shield?

Every 2011 and newer Cadillac vehicle is covered by Cadillac Shield. Cadillac Shield includes innovations like Remote Vehicle Diagnostics and advanced mobile apps to our Premium Care Maintenance program.

What services are covered in Cadillac bumper-to-bumper warranty?

The entire vehicle is warranted for repairs, including parts and labor, to correct any defects in materials or workmanship for 4 years or 50,000 miles, whichever comes first (except routine maintenance). It also covers towing to the nearest GMC dealership with no deductibles.

Is Cadillac related to General Motors?

Cadillac is a division of General Motors LLC.

How do I contact Cadillac Roadside Assistance??

If your Cadillac vehicle is equipped with an active OnStar subscription, you can simply press the blue button for roadside service. If it is not equipped, please call 1-800-224-1400 to initiate roadside assistance for your vehicle.

How do I schedule service for my Cadillac?

You can schedule a service appointment with our outstanding service department at Hennessy Cadillac by calling our service department at 678-647-9720, visiting our store located at 3423 Old Norcross Road, Duluth, GA 30096, or by using our online Request a Service Appointment form.

How do I trade-in my vehicle for a new Cadillac?

Trading in your old vehicle for a new Cadillac is easy. You can either come in to our dealership at 3377 Satellite Blvd Duluth GA 30096 US and speak with one of our reputable sales associates.

How much are Cadillac parts and where can I purchase them?

Hennessy Cadillac takes all the guesswork out of ordering parts online so that you get exactly what you are looking for. Just fill out this Parts Inquiry Form and one of our friendly Parts Specialists will take care of your order right away.

Where should I get tires for my Cadillac?

Hennessy Cadillac sells a variety of well known brand tires, such as Bridgestone, Firestone, Goodyear, Michelin and many more. Our service department can help decide what kind of tire is best for you.

What type of oil should I use in my Cadillac?

Our service department offers a wide range of oil brands and grades.  Check your owners manual to learn what grade is best for your vehicle or simply stop by our store for more information.

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