2021 GMC Sierra 1500 AT4

  • Used
  • Diesel
$37,995$43,300 Retail Price
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    The overview

    Exterior Color
    Summit White
    Interior Color
    Jet Black
    Odometer
    80,613 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
    1GTU9EET3MZ316663
    Stock Number
    UL316663
    • Show Me the CARFAX 1-Owner 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 CarbonPro Edition: AT4 Carbon Hard Badge; Black Dual Exhaust Tips; MulitPro Audio System by Kicker; Unique Grille Surround with Black Chrome Finish; CarbonPro (carbon Fiber Composite) Bed
    • Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Perimeter Lighting; Lane Change Alert with Side Blind Zone Alert
    • Driver Alert Package II: Forward Collision Alert; Lane Keep Assist with Lane Departure Warning; Front Pedestrian Braking; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Adaptive Cruise Control
    • Technology Package: 8 Driver Information Center; HD Surround Vision with 2 Trailer View Camera Provisions; Multicolor 15 Diagonal Head-Up Display; Bed View Camera; Rear Camera Mirror
    • AT4 Value Package
    • Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Hill Descent Control; Electric Rear-Window Defogger; Floor-Mounted Center Console; Theft Deterrent System (unauthorized Entry); Body-Color Surround Grille; 170 Amp Alternator; Auxiliary External Transmission Oil Cooler; Heavy-Duty Air Filter; Skid Plates; Compass; 4.2 Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; Trailering Package; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seating; Off-Road Suspension; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; GMC Connected Access Capable; Color-Keyed Carpeting Floor Covering; OnStar and GMC Connected Services Capable; Power Front Passenger Windows with Express Up/down; 2-Speed Transfer Case; Deep-Tinted Glass; Spray-On Pickup Bed Liner with AT4 Logo; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Front Windows with Driver Express Up/down; Ventilated Driver and Front Passenger Seats; Manual Tilt-Wheel and Telescoping Steering Column; Rear Dual USB Charging-Only Ports; Keyless Open and Start; 4G LTE Wi-Fi Hotspot Capable; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Auto-Locking Rear Differential; Power Door Locks
    • AT4 Preferred Package: Premium Bose 7-Speaker Sound System; Power Sliding Rear Window with Rear Defogger; Wireless Charging; Universal Home Remote; Premium GMC Infotainment System Radio with Navigation
    • Power Sunroof
    • MulitPro Audio System by Kicker
    • 20 X 9 6-Spoke Carbon Gray Painted Aluminum Wheels
    • All-Weather Floor Liners with AT4 Logo
    • 275/60R20SL AT BW Tires
    • Apple CarPlay/Android Auto smart device mirroring
    • Forward Collision Alert with Automatic Braking
    • Front Pedestrian Braking
    • 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
    • HD Rear Vision Camera w/Hitch View rear mounted camera
    • Lane Keep Assist with Lane Departure Warning
    • Adaptive cruise control
    • Head-up display
    • Brake assist system
    • Cruise control with steering wheel mounted controls
    • Ventilated driver and front passenger seats
    • Integrated navigation system
    • Keyfob remote start
    • Heated steering wheel
    • Heated driver and front passenger seats
    • Heated rear seats
    • Leather front seat upholstery
    • Primary monitor touchscreen
    • Rear Cross-Traffic Alert collision warning
    • First-row sliding and tilting glass sunroof with express open/close activation sunshade
    • Driver seat power reclining
    • lumbar support
    • cushion tilt
    • fore/aft control and height adjustable control
    • AutoTrac part and full-time 4WD
    • Duramax 3L I-6 diesel direct injection
    • DOHC
    • variable valve control
    • intercooled turbo
    • diesel
    • engine with 277HP
    • Duramax 3L I-6 DOHC
    • Front wireless smart device charging
    • Teen Driver restricted driving mode/alerts
    • Smart key with hands-free access and push button start
    • Keyfob window control
    • Aerial view camera
    • Push-button
    • Video-feed rearview mirror
    • Bluetooth wireless audio streaming
    • Hitch Guidance vehicle to trailer hitching assist
    • Front mounted camera
    • Right side camera
    • Pickup box camera
    • Left side camera
    • Lane Change Alert with Side Blind Zone Alert blind spot warning
    • Following Distance Indicator
    • GMC ProGrade Trailering System trailer light test
    • GMC ProGrade Trailering System trailer light malfunction warning
    • GMC ProGrade Trailering System trailer theft alarm
    • Dual-zone front climate control
    • IntelliBeam auto high-beam headlights
    • Immobilizer
    • Bose speakers
    • Bluetooth handsfree wireless device connectivity
    • Trailer brake controller
    • Trailer Sway Control (TSC) trailer sway control
    • Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
    • 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
    Ready for work and weekend adventures, this 2021 GMC Sierra 1500 AT4 4WD combines rugged capability with refined comfort. Powered by a torquey 6-cylinder 3.0L Diesel engine, this GMC Sierra delivers excellent fuel efficiency and confident towing performance while preserving a quiet, comfortable ride. Finished in a commanding exterior and thoughtfully appointed interior, the AT4 trim brings off-road-ready suspension and premium accents for a capable, upscale experience.

    Enjoy cold mornings with Remote Start and a Heated Steering Wheel. Driver-assist features like Lane Departure Warning enhance safety on long drives, while Steering Wheel Audio Controls keep entertainment and calls within easy reach. This GMC Sierra is documented as a CARFAX 1-Owner vehicle, reflecting consistent care and a clean ownership history.

    Located in McConnellsburg, PA, this 2021 GMC Sierra AT4 is priced to move â€" the best price available for comparable AT4 Diesel models in the region. Whether you need a dependable work truck, a weekend trail-hauler, or a highway cruiser with diesel economy, this GMC Sierra checks the boxes: rugged capability, modern tech, and comfort features that matter.

    Schedule a test drive today to experience the diesel torque, smooth shifting, and confident 4WD traction firsthand. Competitive pricing, one-owner history, and sought-after AT4 features make this GMC Sierra 1500 an exceptional value in McConnellsburg, PA â€" ready to go where you need it to.

    Peace of mind

    vehicle history report

    Vehicle history report

    • Title information
    • Odometer readings
    • Accident data (if applicable)
    • Service history
    • Vehicle usage
    • Recall information (if applicable)
    • Warranty status
    Free CarFax report

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    Thomas Automotive is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
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      *Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. All vehicles are subject to prior sale. We reserve the right to make changes without prior notice, refuse to honor any incorrect prices, and are not responsible for errors or omissions. Price does not include applicable tax, title, license, processing and/or documentation fees.

      *Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. All vehicles are subject to prior sale. We reserve the right to make changes without prior notice, refuse to honor any incorrect prices, and are not responsible for errors or omissions. Price does not include applicable tax, title, license, processing and/or documentation fees.