Used 2023 GMC Sierra 1500 AT4
78,642 mi.
Vehicle Details
This 2023 GMC Sierra 1500 AT4 is a true workhorse, packed with features that elevate your driving experience to New heights. Boasting a powerful EcoTec3 6.2L V8 engine, this truck delivers an impressive 420 horsepower and 460 lb-ft of torque, ensuring you have the power to tackle any task with ease.
– EcoTec3 6.2L V8 engine
– AT4 Preferred Package
– Preferred Equipment Group 4SB
– Trailering Package
The Sierra AT4 is designed to take on the toughest terrain, thanks to its off-road-tuned suspension and 4-wheel drive capabilities. Whether you’re navigating rugged backroads or hauling heavy loads, this truck is up for the challenge.
Inside, you’ll find a wealth of premium amenities, including a Bose 7-speaker sound system, wireless charging, and a suite of advanced safety features like Adaptive Cruise Control, Automatic Emergency Braking, and Lane Keep Assist. The spacious, well-appointed cabin provides ample room for passengers and cargo, making this Sierra the perfect companion for both work and play.
With its bold, distinctive styling and exceptional performance, this 2023 GMC Sierra 1500 AT4 is a true standout in the full-size truck segment. Discover the power and capability that can only be found in a Sierra AT4 – visit Killeen Certified today and experience it for yourself.
Why Choose Killeen Certified?
At Killeen Certified, we’re committed to giving every customer a Car-buying experience they can trust. Our bilingual staff is ready to assist you every step of the way — ¡Hablamos Español! — ensuring clear communication and comfort throughout your visit. Every vehicle on our lot is thoroughly inspected for quality and fuel efficiency, so you can drive with confidence. Plus, with flexible financing solutions and competitive trade-in options, we make upgrading your ride easier than ever. Conveniently located in the heart of Killeen, we’re proud to offer top-rated service and a team dedicated to helping you find the perfect vehicle.
THE DEALS ARE REAL AT KILLEEN CERTIFIED!
Standard Features
- Navigation System
- AT4 Preferred Package
- Preferred Equipment Group 4SB
- Trailering Package
- 2 USB Ports
- 7 Speakers
- AM/FM radio
- Premium audio system: GMC Infotainment System
- Premium Bose 7-Speaker Sound System
- Radio data system
- Radio: Premium GMC Infotainment Audio System
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Air Conditioning
- Automatic temperature control
- Electric Rear-Window Defogger
- Front dual zone A/C
- Rear window defroster
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Memory seat
- Power driver seat
- Power Front Passenger Windows w/Express Up/Down
- Power Front Windows w/Driver Express Up/Down
- Power Rear Windows w/Express Down
- Power steering
- Power windows
- Push Button Start
- Remote keyless entry
- Remote Vehicle Starter System
- Steering wheel mounted audio controls
- Universal Home Remote
- Auto-Locking Rear Differential
- Off-Road Suspension
- Power Rake & Telescoping Steering Column
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Electrical Steering Column Lock
- Emergency communication system: OnStar and GMC connected services capable
- Front anti-roll bar
- Front wheel independent suspension
- Keyless Open & Start
- Low tire pressure warning
- Not Equipped w/Steering Column Lock
- Occupant sensing airbag
- Overhead airbag
- Power Door Locks
- Brake assist
- Electronic Stability Control
- Hill Descent Control
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Perimeter Lighting
- Panic alarm
- Security system
- Theft Deterrent System (Unauthorized Entry)
- Adaptive Cruise Control
- Speed control
- 170 Amp Alternator
- 220 Amp Alternator
- Auxiliary External Transmission Oil Cooler
- Block heater
- Engine Block Heater
- External Engine Oil Cooling
- Heavy-Duty Air Filter
- Auto-dimming door mirrors
- Black Chrome Header & Grille Insert Bars
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- IntelliBeam Automatic High Beam On/Off
- LED Cargo Area Lighting
- Power door mirrors
- Rear step bumper
- Rear Wheelhouse Liners
- Spray-On Pickup Bed Liner w/AT4 Logo
- 2 Charge/Data USB Ports Inside Center Console
- 2 Type-C Charge-Only Rear USB Ports
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Automatic Emergency Braking
- Buckle to Drive
- Color-Keyed Carpeting Floor Covering
- Compass
- Driver door bin
- Driver vanity mirror
- Floor-Mounted Center Console
- Following Distance Indicator
- Forward Collision Alert
- Front Pedestrian Braking
- Front Prem Floor Liners w/Removable Carpet Insert
- Front reading lights
- GMC Connected Access Capable
- HD Surround Vision
- Heated steering wheel
- Illuminated entry
- Lane Keep Assist w/Lane Departure Warning
- OnStar & GMC Connected Services Capable
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear Cross Traffic Braking
- Rear Pedestrian Detection
- Rear Prem Floor Liners w/Removable Carpet Insert
- Rear reading lights
- Rear seat center armrest
- Safety Alert Seat
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trailer Camera Provisions
- Trailer Side Blind Zone Alert
- Trip computer
- Ultrasonic Front & Rear Park Assist
- Voltmeter
- Wi-Fi Hotspot Capable
- Wireless Charging
- Wireless Phone Projection
- 10-Way Power Driver Seat Adjuster w/Lumbar
- 10-Way Power Passenger Seat Adjuster w/Lumbar
- Front Bucket Seats
- Front Center Armrest
- Heated 2nd Row Outboard Seats
- Heated Driver & Front Outboard Passenger Seating
- Heated front seats
- Heated rear seats
- Perforated Front Leather Seat Trim
- Power passenger seat
- Split folding rear seat
- Ventilated Driver & Front Passenger Seats
- Ventilated front seats
- Passenger door bin
- Hitch Guidance
- Hitch Guidance w/Hitch View
- In-Vehicle Trailering App
- Integrated Trailer Brake Controller
- Red Recovery Hooks
- 18″ x 8.5″ Machined Aluminum Wheels
- Alloy wheels
- Deep-Tinted Glass
- Front Rainsensing Wipers
- Power Sliding Rear Window w/Rear Defogger
- Rain sensing wipers
- Variably intermittent wipers
- 3.23 Rear Axle Ratio
VEHICLE DATA
Certain specifications, prices and equipment data have been provided under license from Chrome Data Solutions (\’Chrome Data\’). © 2026 Chrome Data Solutions, LP. All Rights Reserved. This information is supplied for personal use only and may not be used for any commercial purpose whatsoever without the express written consent of Chrome Data. Chrome Data makes no guarantee or warranty, either expressed or implied, including without limitation any warranty of merchantability or fitness for particular purpose, with respect to the data presented here. All specifications, prices and equipment are subject to change without notice.
ESTIMATE MPG
EPA mileage ratings are supplied by Chrome Data Solutions, LP for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid models only) and other factors.
Based on 2019 EPA mileage ratings. Your MPGe/MPG and driving range will vary depending on driving conditions, how you drive and maintain your vehicle, battery-pack age/condition, and other factors.
PRICING
Vehicle pricing is believed to be accurate. Tax, title and registration are not included in prices shown unless otherwise stated. Manufacturer incentives may vary by region and are subject to change. Vehicle information & features are based upon standard equipment and may vary by vehicle. Monthly payments may be higher or lower based upon incentives, qualifying programs, credit qualifications, residency & fees. No claims, or warranties are made to guarantee the accuracy of vehicle pricing, payments or actual equipment. Call to confirm accuracy of any information.
Manufacturer’s Rebate subject to residency restrictions. Any customer not meeting the residency restrictions will receive a dealer discount in the same amount of the manufacturer’s rebate.
