Pre-Owned 2021 GMC Sierra 1500 AT4
- VIN: 1GTP9EEL2MZ228071
- Stock: M8734PRTL
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Details
GMC Sierra 1500 AT4 Used 2021
VIN: 1GTP9EEL2MZ228071STOCK: M8734PRTL
Basic Info
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Exterior:Black
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Drivetrain:4WD
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Interior:Jet Black With Kalahari Accents
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Transmission:10-Speed Automatic
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Engine:EcoTec3 6.2L V8
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Fuel Efficiency:15 CITY / 19 HWY
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Mileage:66,953
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LocationAuto Gallery Mall of Georgia
Key Features
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AWD
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Adaptive Cruise Control
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Android Auto
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Apple CarPlay
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Backup Camera
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Fog Lights
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Heated Seats
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Keyless Entry
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Lane Departure Warning
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Lane keep assist
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Memory Seats
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Parking Sensors / Assist
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Power Seats
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Premium Audio
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Sunroof / Moonroof
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Technology Package
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Tow Package
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Wireless Phone Charging
History Report
Description
🖤🔥 2021 GMC SIERRA 1500 AT4 – 6.2L V8 • 4X4 • OFF‑ROAD LUXURY TRUCK
4WD | 66,953 miles | Onyx Black | Jet Black w/ Kalahari Accents | EcoTec3 6.2L V8 | 10‑Speed Automatic | 4D Crew Cab
The 2021 GMC Sierra 1500 AT4 is built for drivers who demand real V8 power, off‑road capability, and premium comfort in one bold truck. With its aggressive design, powerful 6.2L engine, and advanced 4×4 system, this AT4 stands out on the street and dominates off the road.
This isn’t just a truck, this is AT4 performance, upgraded.
💪 6.2L V8 – POWER YOU CAN FEEL
This top‑tier EcoTec3 engine delivers:
Strong, aggressive acceleration
Excellent towing and hauling capability
Proven durability and torque
True full‑size V8 performance
Paired with a 10‑Speed Automatic, it delivers smooth, fast, and controlled shifts.
❄️ 4WD – BUILT FOR ANY TERRAIN
AT4 4×4 capability gives you:
Maximum traction in mud, snow, or dirt
Off‑road confidence and control
Stability under heavy loads
True go‑anywhere performance
Ready for work or weekend adventure.
🖤 ONYX BLACK – AGGRESSIVE & DOMINANT
This Sierra AT4 stands out with:
Deep black finish
Bold, rugged styling
Strong, commanding road presence
Interior: Jet Black with Kalahari accents, delivering a rugged yet upscale feel.
⭐ AT4 – OFF‑ROAD + PREMIUM COMFORT
AT4 models are known for:
Off‑road tuned suspension
Premium interior materials
Advanced infotainment system
Unique styling and stance
Built for those who want more than a standard truck.
CREW CAB – SPACE & VERSATILITY
You get:
Full seating for five adults
Spacious rear seating
Comfortable long‑distance driving
Perfect mix of work and lifestyle
💥 This 2021 GMC Sierra AT4 delivers 6.2L V8 power, off‑road capability & premium comfort in one elite truck.
It’s bold.
It’s powerful.
It’s built to perform.
Come see it. Come drive it.
This AT4 won’t last. 🔥
4WD | 66,953 miles | Onyx Black | Jet Black w/ Kalahari Accents | EcoTec3 6.2L V8 | 10‑Speed Automatic | 4D Crew Cab
The 2021 GMC Sierra 1500 AT4 is built for drivers who demand real V8 power, off‑road capability, and premium comfort in one bold truck. With its aggressive design, powerful 6.2L engine, and advanced 4×4 system, this AT4 stands out on the street and dominates off the road.
This isn’t just a truck, this is AT4 performance, upgraded.
💪 6.2L V8 – POWER YOU CAN FEEL
This top‑tier EcoTec3 engine delivers:
Strong, aggressive acceleration
Excellent towing and hauling capability
Proven durability and torque
True full‑size V8 performance
Paired with a 10‑Speed Automatic, it delivers smooth, fast, and controlled shifts.
❄️ 4WD – BUILT FOR ANY TERRAIN
AT4 4×4 capability gives you:
Maximum traction in mud, snow, or dirt
Off‑road confidence and control
Stability under heavy loads
True go‑anywhere performance
Ready for work or weekend adventure.
🖤 ONYX BLACK – AGGRESSIVE & DOMINANT
This Sierra AT4 stands out with:
Deep black finish
Bold, rugged styling
Strong, commanding road presence
Interior: Jet Black with Kalahari accents, delivering a rugged yet upscale feel.
⭐ AT4 – OFF‑ROAD + PREMIUM COMFORT
AT4 models are known for:
Off‑road tuned suspension
Premium interior materials
Advanced infotainment system
Unique styling and stance
Built for those who want more than a standard truck.
CREW CAB – SPACE & VERSATILITY
You get:
Full seating for five adults
Spacious rear seating
Comfortable long‑distance driving
Perfect mix of work and lifestyle
💥 This 2021 GMC Sierra AT4 delivers 6.2L V8 power, off‑road capability & premium comfort in one elite truck.
It’s bold.
It’s powerful.
It’s built to perform.
Come see it. Come drive it.
This AT4 won’t last. 🔥
Vehicle Details
Details
- AT4 CarbonPro Edition
- AT4 Preferred Package
- AT4 Value Package
- Driver Alert Package I
- Driver Alert Package II
- Performance Upgrade Package (LPO) (DISC)
- Preferred Equipment Group 4SB
- Technology Package
- Trailering Package
- 6 Speakers
- 6-Speaker Audio System Feature
- AM/FM radio: SiriusXM with 360L
- MultiPro Audio System by Kicker
- Premium audio system: GMC Infotainment System
- Premium Bose 7-Speaker Sound System
- Radio data system
- Radio: Premium GMC Infotainment Sys w/Multi-Touch
- Radio: Premium GMC Infotainment Sys w/Navigation
- SiriusXM w/360L
- Steering Wheel Audio Controls
- Air Conditioning
- Automatic temperature control
- Electric Rear-Window Defogger
- Front dual zone A/C
- Rear window defroster
- 12-Volt Rear Auxiliary Power Outlet
- 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
- Remote keyless entry
- Remote Vehicle Starter System
- Steering wheel mounted audio controls
- Universal Home Remote
- Auto-Locking Rear Differential
- Electrical Lock Control Steering Column
- Manual Tilt-Wheel & Telescoping Steering Column
- Off-Road Suspension
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Front anti-roll bar
- Front wheel independent suspension
- Keyless Open & Start
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power Door Locks
- Power Sunroof
- Brake assist
- Electronic Stability Control
- Hill Descent Control
- 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
- Auxiliary External Transmission Oil Cooler
- Engine Block Heater
- Heavy-Duty Air Filter
- AT4 Carbon Hard Badge
- Auto-dimming door mirrors
- Black Dual Exhaust Tips
- Body-Color Surround Grille
- Bumpers: body-color
- CarbonPro (Carbon Fiber Composite) Bed
- Cat-Back Performance Exhaust (LPO)
- Front License Plate Kit
- Heated door mirrors
- IntelliBeam Automatic High Beam On/Off
- LED Cargo Area Lighting
- Performance Air Intake System (LPO) (DISC)
- Power door mirrors
- ProGrade Trailering System
- Rear step bumper
- Rear Wheelhouse Liners
- Spray-On Pickup Bed Liner w/AT4 Logo
- Unique Grille Surround w/Black Chrome Finish
- 2 USB Ports
- 2 USB Ports (1st Row)
- 4.2" Diagonal Color Display Driver Info Center
- 4G LTE Wi-Fi Hotspot Capable
- 8" Driver Information Center
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Automatic Emergency Braking
- Bed View Camera
- 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 Rear Vision Camera
- HD Surround Vision w/2 Trailer View Camera Provisions
- Heated steering wheel
- Illuminated entry
- Lane Change Alert w/Side Blind Zone Alert
- Lane Keep Assist w/Lane Departure Warning
- Multicolor 15" Diagonal Head-Up Display
- OnStar & GMC Connected Services Capable
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear Camera Mirror
- Rear Cross Traffic Alert
- Rear Dual USB Charging-Only Ports
- 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
- Trip computer
- Ultrasonic Front & Rear Park Assist
- Voltmeter
- Wireless Charging
- 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
- Perforated Leather-Appointed Front 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
- 20" ALLOY WLEELS
- Wheel Locks (Set of 4) (LPO)
- Wheels: 20" x 9" 6-Spoke Carbon Gray Painted Alum
- Deep-Tinted Glass
- Power Sliding Rear Window w/Rear Defogger
- Variably intermittent wipers
- 3.23 Rear Axle Ratio
Customer Reviews
Based on 56 customer reviews
Read all customer reviews on Cars.com
Disclaimer:
Auto Gallery endeavors to ensure accurate pricing and vehicle descriptions. However, we are not liable for errors resulting from computer, human, or third-party sources. We strongly recommend contacting the dealership to verify the accuracy of all advertised prices. All vehicles are displayed with a $2,500 Auto Gallery Discount incentive, for which all customers qualify. Certain vehicles may be equipped with SCONNECT geolocation devices. Out-of-state purchasers may incur additional taxes and fees based on their registration address. While tax estimates are provided, we will assist in determining exact taxes prior to delivery. By engaging with Auto Gallery, you acknowledge and accept these terms. For further inquiries, please contact us directly.