Recent Arrival! Thank you for considering this beautiful 2018 GMC Sierra 1500 SLT finished in stunning Onyx Black with Cocoa/Dune Leather.
Odometer is 73129 miles below market average!
Priced below KBB Fair Purchase Price!
16/22 City/Highway MPG
We are your premier Carrollton, GA Cadillac dealership. John Thornton Cadillac Inc. Is family owned, and it is our goal to provide you with an excellent purchase and ownership experience. We also proudly serve Douglasville Cadillac customers. Whether you're searching for a new or used car near Douglasville or Bremen, researching financing options, or looking for a quick quote on a car, truck, or SUV, the friendly, yet professional staff at our Carrollton Cadillac dealership is ready to provide you with all the help you need. We are proud to serve Bremen Cadillac customers. We have served as your premier Cadillac dealer for the entire West Georgia area for over 45 years. Off-Road Suspension Package (Hill Descent Control), Preferred Equipment Group 4SA (110-Volt AC Power Outlet, 150 Amp Alternator, 1st & 2nd Row Color-Keyed Carpeted Floor Mats, 2-Speed Active Electronic AutoTrac Transfer Case, 4.2 Diagonal Color Display Driver Info Center, Auto-Dimming Inside Rear-View Mirror, Auxiliary External Transmission Oil Cooler, Chrome Bodyside Moldings, Chrome Door Handles, Chrome Mirror Caps, Color-Keyed Carpeting, Deep-Tinted Glass, Driver & Front Passenger Illuminated Vanity Mirrors, Dual-Zone Automatic Climate Control, Electric Rear-Window Defogger, EZ Lift & Lower Tailgate, Front Frame-Mounted Black Recovery Hooks, GMC 4G LTE, GMC Connected Access, Heavy-Duty Rear Locking Differential, Leather Wrapped Steering Wheel w/Cruise Controls, LED Cargo Box Lighting, LED Tailamps w/Signature, Manual Tilt/Telescoping Steering Column, OnStar & GMC Connected Services Capable, Power Adjustable Pedals, Power Folding & Adjustable Heated Outside Mirrors, Power Windows w/Driver Express Up & Down, Rear 60/40 Folding Bench Seat (Folds Up), Rear Wheelhouse Liners, Remote Keyless Entry, Remote Vehicle Starter System, Single Slot CD/MP3 Player, Steering Wheel Audio Controls, Theft Deterrent System (Unauthorized Entry), Thin Profile LED Fog Lamps, and Universal Home Remote), SLT Premium Package (20 x 9 Polished Aluminum Wheels, 6 Rectangular Chromed Tubular Assist Steps, and Bose Speaker System), Trailering Equipment, 6-Speed Automatic Electronic with Overdrive, 4WD, Cocoa/Dune Leather, 10-Way Power Driver's Seat Adjuster, 3.42 Rear Axle Ratio, 4-Wheel Disc Brakes, 40/20/40 Front Split Bench Seat, 6 Speakers, 6-Speaker Audio System, ABS brakes, Adjustable pedals, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic temperature control, Bodyside moldings, Brake assist, Bumpers: chrome, CD player, Compass, Delay-off headlights, Driver door bin, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Exterior Parking Camera Rear, Floor Mounted Console, Front anti-roll bar, Front Center Armrest w/Storage, Front dual zone A/C, Front fog lights, Front Full Feature Power Reclining Bucket Seats, Front reading lights, Front wheel independent suspension, Fully automatic headlights, Garage door transmitter, HD Radio, Heated & Ventilated Front Bucket Seats, Heated door mirrors, Heated Driver & Front Passenger Seats, Heated front seats, Heavy Duty Suspension, High-Intensity Discharge Headlights, Illuminated entry, Integrated Trailer Brake Controller, Leather Appointed Seat Trim, Low tire pressure warning, Memory seat, Occupant sensing airbag, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Power door mirrors, Power driver seat, Power passenger seat, Power steering, Power windows, Premium audio system: GMC Infotainment System, Radio data system, R
Used 2018 GMCSierra 1500 SLT
- Exterior Color
- Onyx Black
- Interior Color
- COCOA/DUNE, PERFORATED LEATHER-APPOINTED FRONT SEA
- Odometer
- 29,619 miles
- Fuel Economy
- 15/20 MPG City/Hwy
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- Engine: 5.3L, V-8, SIDI, Active Fuel Mgt
- VIN
- 3GTU2NEC3JG415113
- Stock Number
- SG1307A
GMC
Sierra 1500
Included Packages & Accessories
Detailed Specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 26 gal
- Horsepower: 355
Dealer Notes
KBB.com Consumer Reviews

Overall4.1Out of 5
- 5.0
Awesome Teuck
By Sandy | on Friday, July 23, 2021
I absolutely love my truck. Comfort is better than our Cadillac and it looks awsome. Luxury interior and amazing in the snow.… - 1.0
2014 1500 denali
By Nate | on Sunday, May 07, 2023
I have decided that this will be the first and final General Motors (GM) product that I will purchase. The air conditioning failed at 60,000 miles due to a problem with the condenser. At 65,000 miles, I had to replace the transmission because it was causing very rough shifts between gears 1-2 and 2-3. Unfortunately, at 120,000 miles, the transmission is once again exhibiting the same issue it had before it was replaced. Additionally, I was unlucky enough to have a truck that experiences paint peeling on nearly every body panel. This is especially prominent in large sections near the windows and rear doors. Needless to say, I will not be making this mistake again.… - 1.0
Transmission
By Big man | on Tuesday, February 11, 2025
Terrible vehicle. They sold them know transmission was bad. I’ve put new transmission in 2021. And now it’s going out. Will be third transmission jn 142,000 miles…
Based on 128 consumer ratings for 2014–2018 models. | Privacy
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