2021 GMC Sierra 1500 SLT

Thank you for considering this beautiful 2021 GMC Sierra 1500 SLT finished in stunning Onyx Black with Jet Black Leather.


Priced below KBB Fair Purchase Price!

14/20 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. Driver Alert Package I (Lane Change Alert w/Side Blind Zone Alert, Rear Cross Traffic Alert, and Ultrasonic Front & Rear Park Assist), Driver Alert Package II (Adaptive Cruise Control, Automatic Emergency Braking, Following Distance Indicator, Forward Collision Alert, Front Pedestrian Braking, IntelliBeam Automatic High Beam On/Off, Lane Keep Assist w/Lane Departure Warning, and Safety Alert Seat), Preferred Equipment Group 4SA (12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 170 Amp Alternator, 4G LTE Wi-Fi Hotspot Capable, Auto-Locking Rear Differential, Auxiliary External Transmission Oil Cooler, Chrome Grille, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Electric Rear-Window Defogger, Electrical Lock Control Steering Column, Front Frame-Mounted Black Recovery Hooks, GMC Connected Access Capable, Heated Driver & Front Outboard Passenger Seating, Hitch Guidance w/Hitch View, In-Vehicle Trailering App, Integrated Trailer Brake Controller, Keyless Open & Start, LED Cargo Area Lighting, Manual Tilt-Wheel & Telescoping Steering Column, OnStar & GMC Connected Services Capable, Power Door Locks, Power Front Passenger Windows w/Express Up/Down, Power Front Windows w/Driver Express Up/Down, Power Rear Windows w/Express Down, ProGrade Trailering System, Rear Dual USB Charging-Only Ports, Rear Wheelhouse Liners, Remote Vehicle Starter System, Steering Wheel Audio Controls, and Theft Deterrent System (Unauthorized Entry)), SLT Convenience Package (2 USB Ports (1st Row), Floor-Mounted Center Console, Front Bucket Seats, Heated 2nd Row Outboard Seats, Power Sliding Rear Window w/Rear Defogger, Universal Home Remote, and Ventilated Driver & Front Passenger Seats), SLT Preferred Package (Premium Bose 7-Speaker Sound System, Radio: Premium GMC Infotainment Sys w/Navigation, SiriusXM w/360L, and Wireless Charging), SLT Premium Plus Package (20" x 9" Polished Aluminum Wheels, Chrome Wheel To Wheel Assist Steps, and Spray-On Pickup Bed Liner w/GMC Logo), Trailering Package (Hitch Guidance), X31 Off-Road Package (Dual Exhaust w/Premium Tips, Heavy-Duty Air Filter, and Hill Descent Control), 8-Speed Automatic, 4WD, Jet Black Leather, 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 3.23 Rear Axle Ratio, 4-Wheel Disc Brakes, 6 Speakers, 6-Speaker Audio System Feature, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic temperature control, Brake assist, Bumpers: chrome, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Front 40/20/40 Split-Bench Seat, Front anti-roll bar, Front Center Armrest w/Storage, Front dual zone A/C, Front fog lights, Front License Plate Kit, Front reading lights, Front wheel independent suspension, Fully automatic headlights, Heated door mirrors, Heated front seats, Heated steering wheel, Hea