Experience the ultimate in power, capability, and style with the 2023 GMC Sierra 1500 AT4. This impressive truck is designed to conquer any terrain, whether you're tackling off-road adventures or navigating the daily commute.
Packed with an impressive array of features, the Sierra 1500 AT4 is the perfect companion for your active lifestyle. Highlights include:
⢠AT4 PREMIUM PACKAGE
⢠TECHNOLOGY PACKAGE
⢠Volcanic Red Tintcoat Exterior
⢠Engine Block Heater
Elevate your driving experience with the Sierra 1500 AT4's advanced technology and premium amenities. Enjoy the convenience of the Rear Camera Mirror, the clarity of the Multicolor 15" Diagonal Head-Up Display, and the superior sound quality of the Premium Bose 7-Speaker Sound System. Stay connected with SiriusXM, wireless phone projection, and a built-in Wi-Fi hotspot.
Off-road enthusiasts will appreciate the Sierra 1500 AT4's exceptional capabilities. The Off-Road High Clearance Steps, Hill Descent Control, and Hitch Guidance with Hitch View make tackling rugged terrain a breeze. The Integrated Trailer Brake Controller and In-Vehicle Trailering App ensure a smooth and secure towing experience.
Step into the lap of luxury with the Sierra 1500 AT4's premium interior features. Enjoy the comfort of heated and ventilated front seats, along with heated rear outboard seats. The power-sliding rear window and power-adjustable steering column add to the convenience.
Safety is paramount in the Sierra 1500 AT4, with features like Adaptive Cruise Control, Rear Pedestrian Detection, and Ultrasonic Front and Rear Park Assist keeping you and your loved ones secure on the road.
Experience the ultimate in power, capability, and style with the 2023 GMC Sierra 1500 AT4. This exceptional truck is ready to take your adventures to new heights. Visit our showroom today and let us help you find the perfect Sierra 1500 AT4 to meet your needs.
2023 GMC Sierra 1500 AT4
- Used
- Diesel
Can’t come to us? We’ll come to you

Video walkaround
Experience this vehicle via video call and ask us any questions you have.
Schedule a video call
Test drive at home
We’ll bring this vehicle to you for a no-obligation test drive.
Request a test drive
Home delivery
We’ll deliver the vehicle you want to your home and help you complete the paperwork.
Ask about delivery
The full specifications
- 1st and 2nd row curtain head airbags
- 4-wheel ABS Brakes
- ABS and Driveline Traction Control
- AM/FM/Satellite Radio
- Anti-theft alarm system
- Audio System Premium Brand Speakers: Bose
- Audio System Premium Brand: GMC Infotainment System
- Audio controls on steering wheel
- Bluetooth wireless phone connectivity
- Braking Assist
- Bucket front seats
- Climate Controlled : Driver and passenger heated
- Compass
- Cruise control
- Cruise controls on steering wheel
- Daytime running lights
- Driver seat memory
- Driver's side electrochromatic auto-dimming mirrors
- Dual illuminated vanity mirrors
- Dual reverse tilt mirrors
- Electrochromatic rearview mirror
- Engine block heater
- External temperature display
- Fold-up cushion rear seats
- Front Ventilated disc brakes
- Front and rear reading lights
- Front fog/driving lights
- Fuel Consumption: City: 21 mpg
- Fuel Consumption: Highway: 23 mpg
- Heated driver mirror
- Heated passenger mirror
- Heated steering wheel
- Integrated Navigation System : with voice activation
- Intercooled Turbo
- Leather seat upholstery
- Leatherette steering wheel trim
- Machined aluminum rims w/ painted accents
- Memorized Settings for 2 drivers
- Memorized Settings including door mirror(s)
- Metal-look center console trim
- Metal-look dash trim
- Metal-look shift knob trim
- OnStar and GMC connected services capable
- Passenger Airbag
- Power remote w/tilt down driver mirror adjustment
- Power remote w/tilt down passenger mirror adjustment
- Power retractable mirrors
- Power windows
- Premium GMC Infotainment System
- Privacy glass: Deep
- Radio Data System
- Rear seats center armrest
- Remote Engine Start : Keyfob remote start
- Remote power door locks
- Remote window operation
- Side airbag
- Simulated wood/metal-look door trim
- Speed-proportional electric power steering
- Split rear bench
- Stability controll with anti-roll
- Tachometer
- Tilt and telescopic steering wheel
- Total Number of Speakers: 7
- Trailer hitch
- Transmission gear shifting controls on steering wheel
- Trip computer
- Video Monitor Location: Front
- Wheel Diameter: 18
- Wheel Width: 8.5
Notes from the dealer
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
A name you can trust
Riverhead Mazda is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about us


