2021 GMC Sierra 1500 AT4

  • Pre-Owned
  • Diesel


    The overview

    Exterior Color
    Summit White
    Interior Color
    Jet Black
    Odometer
    91,215 miles
    Body/Seating
    Truck Crew Cab/5 seats
    Fuel Economy
    16/21 MPG City/Hwy
    Transmission
    10-Speed Automatic
    Drivetrain
    4x4
    Engine
    I-6 cyl
    VIN
    3GTU9EET3MG247277
    Stock Number
    18238A
    • Show Me the CARFAX Badge

    The highlights

    • Leather upholstery
    • Automatic temperature control
    • Wireless phone connectivity
    • Front dual zone A/C
    • Auto-dimming rearview mirror
    • Split folding rear seat
    • Memory seat
    • Heated front seats
    • Ventilated front seats
    • Perimeter/approach lights
    • Remote keyless entry
    • Heated steering wheel

    A closer look at what’s included

    Included Options
    • AT4 Preferred Package
    • AT4 Value Package
    • Driver Alert Package I
    • Driver Alert Package II
    • Preferred Equipment Group 4SB
    • Technology Package
    • Trailering Package
    • 6 Speakers
    • 6-Speaker Audio System Feature
    • AM/FM radio: SiriusXM with 360L
    • 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
    • 220 Amp Alternator
    • Auxiliary External Transmission Oil Cooler
    • Engine Block Heater
    • Heavy-Duty Air Filter
    • Auto-dimming door mirrors
    • Body-Color Surround Grille
    • Bumpers: body-color
    • Front License Plate Kit
    • Heated door mirrors
    • IntelliBeam Automatic High Beam On/Off
    • LED Cargo Area Lighting
    • Power door mirrors
    • ProGrade Trailering System
    • Rear step bumper
    • Rear Wheelhouse Liners
    • Spray-On Pickup Bed Liner w/AT4 Logo
    • 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
    • Trailer Tire Pressure Monitor System
    • 18" x 8.5" Machined Aluminum Wheels
    • Alloy wheels
    • Deep-Tinted Glass
    • Power Sliding Rear Window w/Rear Defogger
    • Variably intermittent wipers
    • 3.23 Rear Axle Ratio
    • 1-touch down
    • 1-touch up
    • Air conditioning
    • Auto-dimming rearview mirror
    • Automatic temperature control
    • Driver door bin
    • Driver vanity mirror
    • Front beverage holders
    • Front dual zone A/C
    • Heated steering wheel
    • Illuminated entry
    • Memory seat
    • Overhead console
    • Passenger door bin
    • Passenger vanity mirror
    • Power windows
    • Proximity key: doors and push button start
    • Rear beverage holders
    • Rear door bins
    • Remote engine start: keyfob
    • Remote keyless entry
    • Speed control
    • Telescoping steering wheel
    • Tilt steering wheel
    • Alloy wheels
    • Front anti-roll bar
    • Front wheel independent suspension
    • Power steering
    • Speed-sensing steering
    • Tires: all-terrain
    • 1st row LCD monitors: 2
    • Primary LCD size: 8.0"
    • Radio data system
    • Smart device integration: Apple CarPlay/Android Auto
    • Steering wheel mounted audio controls
    • Wireless phone connectivity: Bluetooth
    • Front center armrest
    • Front seats: bucket
    • Heated front seats
    • Leather upholstery
    • Max seating capacity: 5
    • Power 2-way driver lumbar support
    • Power 2-way passenger lumbar support
    • Power driver seat
    • Power passenger seat
    • Rear seat center armrest
    • Rear seats: split-bench
    • Rear seats Folding position: fold-up cushion
    • Seat Upholstery: leather
    • Split folding rear seat
    • Ventilated front seats
    • Cylinder deactivation
    • Drive type: four-wheel
    • Engine location: front
    • Fuel economy city: 16mpg
    • Fuel economy combined: 18mpg
    • Fuel economy highway: 21mpg
    • Fuel tank capacity: 24.0gal.
    • Hybrid traction battery type: none
    • Manual-shift auto
    • Mode select transmission
    • Rear locking differential
    • Standard fuel economy fuel type: gasoline
    • Transmission: 10 speed automatic
    • Variable valve control
    • Ground clearance (min): 276mm (10.9")
    • Auto-dimming door mirrors
    • Bedliner
    • Bumpers: body-color
    • Heated door mirrors
    • Left rear passenger door: conventional
    • Power door mirrors
    • Rear cargo: tailgate
    • Rear step bumper
    • Right rear passenger: conventional
    • Skid plates
    • Trailer hitch receiver
    • Trailer sway control
    • Exterior body width: 2,063mm (81.2")
    • Exterior height: 1,990mm (78.3")
    • Exterior length: 5,885mm (231.7")
    • Front headroom: 1,093mm (43.0")
    • Front hiproom: 1,554mm (61.2")
    • Front legroom: 1,131mm (44.5")
    • Front shoulder room: 1,677mm (66.0")
    • Rear headroom: 1,019mm (40.1")
    • Rear hiproom: 1,530mm (60.2")
    • Rear legroom: 1,102mm (43.4")
    • Rear shoulder room: 1,655mm (65.2")
    • Wheelbase: 3,744mm (147.4")
    • Appearance: analog
    • Compass
    • Delay-off headlights
    • Front fog lights
    • Front reading lights
    • Fully automatic headlights
    • Low tire pressure warning
    • Oil pressure gauge
    • Outside temperature display
    • Rear reading lights
    • Rear window defroster
    • Tachometer
    • Trip computer
    • Variably intermittent wipers
    • Voltmeter
    • 4 wheel disc brakes
    • ABS brakes
    • Brake assist
    • Dual front impact airbags
    • Dual front side impact airbags
    • Electronic stability
    • Ignition disable
    • Occupant sensing airbag
    • Overhead airbag
    • Panic alarm
    • Perimeter/approach lights
    • Security system
    • Traction control
    The 2021 GMC Sierra 1500 4WD Crew Cab Short Box AT4 is an exceptional vehicle designed for those who seek performance, versatility, and advanced technology. This rugged pickup is equipped with a powerful Duramax 3L I-6 diesel engine that delivers 277HP, coupled with a 10-speed automatic transmission, ensuring a smooth and responsive driving experience.

    One of the standout features of the Sierra 1500 AT4 is its impressive array of optional packages. The **Technology Package** brings cutting-edge tech to your fingertips with features like a head-up display, multiple cameras for enhanced visibility, and smart device mirroring that integrates your smartphone seamlessly into the vehicles infotainment system. This package alone enhances safety and convenience, making every journey enjoyable.

    Additionally, the **Driver Alert Package II** is designed to elevate your driving confidence. It includes features such as adaptive cruise control, lane keep assist, and forward collision alert. These systems work together to help you maintain safe driving habits and reduce the risk of accidents.

    The **AT4 CarbonPro Edition** takes durability to the next level with its composite body panels and a standard composite-style pickup box, ensuring your truck can withstand any challenge. Meanwhile, the **Driver Alert Package I** provides crucial alerts for blind spots and rear cross-traffic, adding layers of safety to your daily drives.

    For those looking for luxury, the **AT4 Preferred Package** includes premium Bose speakers and wireless device charging, transforming your truck into a mobile oasis. The **Preferred Equipment Group 4SB** is also noteworthy, as it enhances trailering capabilities with features like the GMC ProGrade Trailering System, making it the perfect choice for towing enthusiasts.

    The Sierra 1500 AT4 is not just about ruggedness; its also about technology and comfort. With features like mobile hotspot capability and a rear camera for better visibility, this vehicle truly represents the future of driving. The smart device mirroring ensures that you stay connected while keeping your eyes on the road, combining safety with convenience.

    In conclusion, the 2021 GMC Sierra 1500 4WD Crew Cab Short Box AT4 offers a perfect blend of power, safety, and technology. Whether you’re heading off-road or commuting through the city, this truck is built to exceed your expectations. Explore the various packages available and customize your Sierra to match your lifestyle today!

    Get the largest and best selection renewed just for you! Nearly all makes, all models, all Colorado ready! Since we're local, so are our vehicles! Our roots are here in Colorado and we'll stay here! Phil Long is a privately-held, family-owned Colorado company employing over 1000 people and giving back to our community since 1945! We bring Coloradans some of the best specials on new and used vehicles. Proudly Serving Denver,

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    Vehicle history report

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    • Accident data (if applicable)
    • Service history
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