Service technician talking to a man and showing his ipad

Why Certified Service?

Your vehicle deserves expert care from the people who know it better than anyone else. We employ factory-trained technicians who use state-of-the-art technology and equipment to help you keep your vehicle running like new. Trust your vehicle to the Certified Service experts. Simply click on the tab or call to schedule an appointment today.

Service Specials

Tire Price Match Guarantee

Provide us with a better eligible* price at the time of purchase and we'll match it. Find a better price within 30 days of the purchase, and we'll refund the difference.

Eligible Tire Brands: BFGoodrich, Bridgestone, Continental, Dunlop, Firestone, General, Goodyear, Hankook, Kelly, Michelin, Pirelli, and Uniroyal.

expires: 12/30/2024
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6-Quart ACDelco GM OE dexos1® Full Synthetic Oil Change and Tire Rotation on most vehicles*

$89.95

expires: 04/28/2024
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8-Quart ACDelco GM OE dexos1® Full Synthetic Oil Change and Tire Rotation on most vehicles*

$99.95

expires: 04/28/2024
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Most GM Genuine Parts Front Brake Pads Installed*

24 Months/Unlimited Mile Warranty**

$440.00

expires: 04/28/2024
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GM Genuine Parts Front Brake Rotors installed on most cars & small SUVs*

24 Months/Unlimited Mile Warranty**

$440.00

expires: 04/28/2024
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GM Genuine Parts Front Brake Rotors installed on most trucks and full-size SUVs*

24 Months/Unlimited Mile Warranty**

$440.00

expires: 04/28/2024
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Most ACDelco GM Original Equipment Cabin Air Filters Installed*

$61.00

expires: 04/28/2024
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Most ACDelco GM Original Equipment Wiper Blades (per pair) Installed*

$69.95

expires: 04/28/2024
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Most ACDelco Gold 36-Mo AGM Batteries Installed*

36-month free-replacement limited warranty**

$324.95

expires: 04/28/2024
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Most ACDelco Gold 36-Mo AGM Batteries Installed*

36-month free-replacement limited warranty**

$324.95

expires: 04/28/2024
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Cabin Air Filter Replacement

10%OFF
Replace cabin air filter with a quality ACDelco cabin air filter. Effectively helps reduce airborne particles including pollen and road dust. Plus tax, if applicable. Coupon valid at vehicle check-in.

expires: 04/28/2024
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Competitor's Coupon

Bring in a coupon from any of our competitors and we'll honor it. Must be a valid, current offer. One per customer. Present coupon at the time order is written. Not valid with other offers.

expires: 04/28/2024
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A service tech guy inspecting a vehicle

Multi-Point Vehicle Inspection

With your Multi-Point Vehicle Inspection, you get a thorough assessment of your vehicle by the Certified Service experts. So protect yourself and your automotive investment with a comprehensive vehicle inspection at your John Thornton Cadillac Dealer today.

Professional maintenance you can rely on

When it’s time for vehicle maintenance or repair, visit the Cadillac Certified Service experts to handle all your vehicle needs. Nobody knows your vehicle better than these trained automotive service professionals, so from oil changes to engine replacements, let the Certified Service experts take care of everything.

Service technician inspecting a vehicle.

Looking For New Tires?

Your vehicle's tires are the first and only contact with the road, so it is important to choose the right set when replacing them. John Thornton Cadillac has Certified Service experts that will handle all of your tire needs. From checking tire wear to tire pressure our team can help you find new tires for your vehicle.

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Service technician doing an oil change

Need An Oil Change?

Your vehicle may be trying to tell you something – Oil Life Monitoring Systems let you know when it’s time for an oil change. And our Certified Service experts can recommend what’s best for your vehicle. Schedule an appointment today.

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A closeup shot of a service technician's hand replacing a car battery

Having Battery Trouble?

Your vehicle’s battery provides energy to start the engine, plus it supplies power to accessories when the engine is not running. The cold of winter and the heat of summer can affect your auto battery. See us for your vehicle’s battery needs.

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Service technician replacing brakes

Brakes Need Replacing?

Stopping power is crucial to a safe and successful driving experience. When you need brake service, visit John Thornton Cadillac and our GM Certified Service experts will recommend quality new brakes.

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Get Directions

1492 N Highway 27, Carrollton, GA, 30117
John Thornton Cadillac 33.60852, -85.08531.