2021 GMC Sierra AT4 Truck Crew Cab V8,

  • Used
  • Diesel
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    The overview

    Exterior Color
    Summit White
    Interior Color
    Jet Black w/Kalahari Accents
    Odometer
    109,843 miles
    Body/Seating
    Truck Crew Cab/5 seats
    Transmission
    10-speed automatic
    Drivetrain
    4WD
    Engine
    V8, 6.6L
    VIN
    1GT49VEY1MF112988
    Stock Number
    MF112988N

      The highlights

      • Leather upholstery
      • Automatic temperature control
      • Premium audio system
      • 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

      A closer look at what’s included

      Included Options
      • Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Lane Change Alert with Side Blind Zone Alert; Perimeter Lighting
      • Driver Alert Package II: Forward Collision Alert; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Lane Departure Warning
      • Technology Package: 8 Driver Information Center; Multicolor 15 Diagonal Head-Up Display; Auto-Dimming Inside Rearview Mirror with Camera
      • Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (first Row); Electric Rear-Window Defogger; Wireless Phone Projection; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille with High Gloss Black Mesh; Compass Located in Instrument Cluster; 4.2 Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; GMC Connected Access Capable; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; 2nd Row Heated Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active 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/telescoping Steering Column; 2nd Row Dual USB Charge-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 Inside Console; 18 Machined Aluminum Wheels; Power Door Locks
      • Gooseneck/5th Wheel Package: Gooseneck/5th Wheel Prep Package
      • AT4 Preferred Package: HD Surround Vision with 2 Trailer View Camera Provisions; Bose Premium 7 Speaker Sound System; Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Wireless Charging; Bed View Camera with Two Trailer Camera Provisions; Universal Home Remote; AM/FM Stereo with Premium GMC Infotainment System and Navigation
      • Bed View Camera with Two Trailer Camera Provisions
      • LED Smoked Amber Roof Marker Lamps
      • Apple CarPlay/Android Auto smart device wireless mirroring
      • Forward Collision Alert with Automatic Braking
      • 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
      • Hitch View rear mounted camera
      • Head-up display
      • Predictive 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
      • Lane Departure Warning
      • Cross Traffic Alert collision warning
      • Driver seat power reclining
      • lumbar support
      • cushion tilt
      • fore/aft control and height adjustable control
      • AutoTrac part and full-time 4WD
      • Duramax 6.6L V-8 diesel direct injection
      • intercooled turbo
      • diesel
      • engine with 445HP
      • Duramax 6.6L V-8
      • Front wireless smart device charging
      • Teen Driver restricted driving mode/alerts
      • Keyless Open/Keyless Start with hands-free access and push button start
      • Keyfob window control
      • HD Surround Vision w/Hitch View aerial view camera
      • Push-button
      • Video-feed rearview mirror
      • Bluetooth wireless audio streaming
      • 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
      • ProGrade Trailering System vehicle and trailer reverse assist with visual graphic guidance only
      • Premium GMC Infotainment System external memory control
      • Internet radio capability
      • 6 USB ports
      • 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
      • Single rear wheels
      • Speed-sensing steering
      • Tires: all-terrain
      • 1st row LCD monitors: 2
      • AM/FM radio: SiriusXM with 360L
      • Premium audio system: Premium GMC Infotainment System
      • Primary LCD size: 8.0"
      • 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
      • Heated rear 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 configuration: V-8
      • Drive type: four-wheel
      • Engine liters: 6.6L
      • Engine location: front
      • Fuel tank capacity: 36.0gal.
      • Hybrid traction battery type: none
      • Manual-shift auto
      • Mode select transmission
      • Rear locking differential
      • Standard fuel economy fuel type: gasoline
      • Variable valve control
      • Ground clearance (min): 283mm (11.1")
      • 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
      • Turn signal indicator mirrors
      • Exterior body width: 2,079mm (81.8")
      • Exterior height: 2,049mm (80.7")
      • Exterior length: 6,756mm (266.0")
      • Front headroom: 1,093mm (43.0")
      • Front hiproom: 1,554mm (61.2")
      • Front legroom: 1,131mm (44.5")
      • Front shoulder room: 1,676mm (66.0")
      • Rear headroom: 1,019mm (40.1")
      • Rear hiproom: 1,530mm (60.2")
      • Rear legroom: 1,102mm (43.4")
      • Rear shoulder room: 1,659mm (65.3")
      • Turning radius: 8.7m (28.5')
      • Wheelbase: 4,369mm (172.0")
      • 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

      KBB.com Consumer Reviews

      Kelley Blue Book Logo4.2out of 5 overall
      • 5.0

        2020 GMC Denali 3500 HD Duramax is a BEAST!

        by Merlinsmerc on Friday, January 22, 2021

        Pulling a conventional 10,000 lb trailer over mountain passes is a whole new experience. Staying at the speed limit up long steep grades did not change the engine temperature. I feathered the accelerator up the mountain. The new 10 speed transmission is so smooth you cant feel it changing gears. This is my second GMC Denali Duramax, first being a 2016. I debated trading in for over a year, and am so happy I made the trade. Trailers always exceed by far the tongue weight posted on them, and in my case it came in at 1450 lbs. That exceeded my trucks posted maximum. The 2020 dually posts a 2,000 lb tongue weight, so now I can front load the trailer, and that reduces sway. If you can afford it, and have a heavy trailer, buy the truck!
      • 5.0

        Love our truck

        by Ron on Friday, December 11, 2020

        The truck doesn’t have a sun roof which it was suppose to have
      • 2.0

        In shop for 13 weeks so far!

        by Whip on Monday, September 09, 2024

        My truck has been in the shop for 13 weeks to this point with no end in sight. The Infotainment panel blew out which controls pretty much everything. Nice truck except if something goes wrong then, good luck! I would recommend looking at Fords and Rams and ask the question, how many vehicles do you have in your shop waiting for parts and for how long. I heard of one at my GMC dealership that has been waiting for 8 months! Only thing I get from GM is "we understand your frustration". Apparently they don't, or I would have my truck back long ago.