Used 2021 GMCSierra 2500HD AT4 Truck 8 Cylinder Engine

Located at
Greenway GMC
    Exterior Color
    Onyx Black
    Interior Color
    Jet Black w/Kalahari Accents
    Odometer
    85,991 miles
    Body/Seating
    Truck/5 seats
    Transmission
    6-SPEED AUTOMATIC, HEAVY-DUTY
    Drivetrain
    Four Wheel Drive
    Engine
    8 Cylinder Engine
    VIN
    1GT49PE7XMF212736
    Stock Number
    GN08566A
    GMC Sierra 2500HD

    Highlighted Features

    • 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

    Included Packages & Accessories

    • X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks
    • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App
    • Engine, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm)
    • Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
    • GVWR, 10,650 lbs. (4831 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18 or 20 wheels or TK20943 and (L8T) 6.6L V8 gas engine with 17 wheels.)
    • Hill Descent Control
    • Transfer case, two-speed active, electronic Autotrac with push button control
    • Auto-locking rear differential
    • Four wheel drive
    • Cooling, external engine oil cooler
    • Cooling, auxiliary external transmission oil cooler
    • Air filter, heavy-duty
    • Air filtration monitoring
    • Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
    • Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
    • Trailer brake controller, integrated
    • In-vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed.)
    • Recovery hooks, Red
    • Skid Plates protect the oil pan, front axle and transfer case
    • Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
    • Suspension, Off-Road includes twin-tube shocks
    • Steering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
    • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
    • Brake lining wear indicator
    • Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
    • Tire, spare LT275/70R18 all-terrain, blackwall
    • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
    • Bumper, front, body-color lower
    • Bumper, rear body-color with bumper CornerSteps
    • CornerStep, rear bumper
    • Bed Liner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo. Not available with any Ship Thrus EXCEPT (VSH), (VTV), (TCH) or (TCE).)
    • Bed Step, Black integrated on forward portion of bed on driver and passenger side
    • Cargo tie downs (12), fixed rated at 500 lbs per corner
    • Wheelhouse liners, rear
    • Moldings, beltline, Black
    • Grille (Painted Black surround with high gloss Black mesh and Black chrome inserts.)
    • Fog lamps, LED
    • Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
    • LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
    • Taillamps, LED signature taillight with LED stop and reverse light
    • Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger) lower convex mirrors, turn signal indicators, puddle lamps, perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31 [84.25mm]) (Molded in color Black.)
    • Mirror caps, high gloss Black
    • Glass, deep-tinted
    • Door handles, body-color
    • Tailgate, GMC MultiPro Tailgate with six functional load/access features
    • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
    • Tailgate and bed rail protection caps, top
    • Radio, HD
    • Audio system feature, 6-speaker system
    • 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
    • Seat adjuster, driver 10-way power including lumbar
    • Seat adjuster, passenger 10-way power including lumbar
    • Driver memory recalls driver presets for power driver seat and outside mirrors
    • Seats, heated second row outboard seats
    • Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)
    • Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
    • Floor covering, color-keyed carpeting
    • Steering wheel, leather-wrapped
    • Steering wheel, heated
    • Steering wheel audio controls
    • Steering column, manual Tilt-Wheel and telescoping
    • Steering column, lock control, electrical
    • Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
    • Driver Information Center, 4.2 diagonal color display includes driver personalization
    • Exterior Temperature Display, located in radio display
    • Compass, located in instrument cluster
    • Rear seat reminder
    • Remote vehicle starter system
    • Cruise control, steering wheel-mounted
    • Theft-deterrent system, unauthorized entry
    • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
    • USB ports, dual, charge-only (2nd row)
    • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
    • Air conditioning, dual-zone automatic climate control
    • Air vents, rear
    • Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
    • GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details)
    • StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
    • Airbags, dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
    • Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
    • Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver

    Detailed Specifications

    • 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: Android Auto/Apple CarPlay
    • 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): 257mm (10.1")
    • 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: 2,023mm (79.7")
    • Exterior length: 6,352mm (250.1")
    • 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: 1,013mm (39.9")
    • Rear hiproom: 1,530mm (60.2")
    • Rear legroom: 1,102mm (43.4")
    • Rear shoulder room: 1,659mm (65.3")
    • Turning radius: 8.0m (26.3')
    • Wheelbase: 4,037mm (158.9")
    • 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

    Dealer Notes

    This 2021 GMC Sierra 2500HD AT4, has a Onyx Black exterior and an Jet Black w/Kalahari Accents interior color. 85,991 miles. Stock Number GN08566A. You can connect with us by calling (815) 942-0404.

    One Owner!

    No Accidents!

    Ready to make a statement on the road? This 2021 GMC Sierra 2500HD AT4 is priced to move and waiting for you. OTHER NOTABLE FEATURES AND OPTIONS YOU SHOULD KNOW ABOUT:

    Driver Alert Package I

    • Perimeter Lighting
    • Ultrasonic Front and Rear Park Assist
    • Rear Cross Traffic Alert
    • Lane Change Alert with Side Blind Zone Alert

    Driver Alert Package II

    • Safety Alert Seat
    • IntelliBeam Automatic High Beam On/off
    • Following Distance Indicator
    • Forward Collision Alert
    • Lane Departure Warning
    • Automatic Emergency Braking

    AT4 Preferred Package

    • Power Sliding Rear Window with Defogger
    • Premium GMC Infotainment System Radio with Navigation
    • Wireless Charging
    • LED Smoked Amber Roof Marker Lamps
    • Universal Home Remote
    • Bose Premium 7 Speaker Sound System
    • Bed View Camera with Two Trailer Camera Provisions
    • HD Surround Vision

    AT4 Premium Plus Package ($6,975 value)

    • Power Sunroof
    • 20 Machined Aluminum Wheels

    Technology Package

    • Inside Rearview Auo-Dimming Rear Camera Mirror
    • 8 Multicolor Driver Information Center
    • Multicolor 15 Diagonal Head-Up Display

    Preferred Equipment Group 4SB

    • Power Front Passenger Windows with Express Up/down
    • Power Rear Windows with Express Down
    • Deep-Tinted Glass
    • Keyless Open and Start
    • Power Door Locks
    • Power Windows with Driver Express Up/down
    • Rear Wheelhouse Liners
    • Rear Premium Floor Liners with Removable Carpet Insert
    • Front Premium Floor Liners with Removable Carpet Insert
    • Remote Vehicle Starter System
    • Electric Rear-Window Defogger
    • Spray-On Pickup Box Bed Liner with AT4 Logo
    • Compass Located in Instrument Cluster
    • Floor-Mounted Center Console
    • Painted Black Surround Grille
    • Integrated Trailer Brake Controller
    • Heated Driver and Front Outboard Passenger Seats
    • Heated 2nd Row Outboard Seats
    • 120-Volt Bed Mounted Power Outlet
    • 120-Volt Instrument Panel Power Outlet
    • 12-Volt Rear Auxiliary Power Outlet
    • Heated and Ventilated Front Bucket Seats
    • 6.6L V8 with Direct Injection and Variable Valve Timing Engine
    • 2 USB Ports
    • 2 USB Ports (1st Row)
    • Electrical Lock Control Steering Column
    • Manual Tilt-Wheel/telescoping Steering Column
    • 2-Speed Active Transfer Case
    • ProGrade Trailering System
    • 4.2 Diagonal Color Display Driver Info Center
    • OnStar and GMC Connected Services Capable
    • LED Cargo Area Lighting
    • Red Recovery Hooks
    • Steering Wheel Audio Controls
    • 2nd Row Dual USB Charge-Only Ports
    • Unauthorized Entry Theft-Deterrent System
    • HD Rear Vision Camera
    • Wireless Phone Projection
    • X31 Off-Road Package

    Gooseneck/5th Wheel Package ($795 value)

    • Bed View Camera with Two Trailer Camera Provisions
    • Gooseneck/5th Wheel Prep Package

    Snow Plow Prep/camper Package ($300 value)

    • 220 Amps Alternator
    • Skid Plates


    Safety and Security

    • Forward collision mitigation - Forward thinking. You look away for just a second and suddenly the vehicle in front of you has stopped. That's when the forward collision mitigation system comes to life. When it senses an impending impact, it will activate a combination of features to help prevent or reduce the severity of an accident. Forward collision mitigation is always looking ahead.

    Technology and Telematics

    • Smart device mirroring - Smartphone, meet smart car. You can control your device through your vehicle's infotainment system. Smart device mirroring brings together safety and convenience by making it easier to find what you're looking for while keeping your eyes on the road.
    • Android Auto/Apple CarPlay smart device wireless mirroring
    • Apple CarPlay/Android Auto smart device wireless mirroring
    • Mobile hotspot - WiFi on the fly. Connect your devices to the Internet through your vehicle's private mobile hotspot and take the internet wherever your journey takes you, without eating up your data allowance. Find the hotspot with mobile hotspot.







    This vehicle is priced to move. Drive home today in your new vehicle, with the Greenway experience. Our family run business prides ourselves on providing exceptional value and a hassle-free buying experience.

    To be sure you don't miss out, give us a call and schedule a test drive. We are located at 310 BEDFORD RD MORRIS IL 60450 - (815) 942-0404. WE LOOK FORWARD TO SEEING YOU SOON!

    Despite our best efforts to ensure the accuracy of the information on this site, we cannot guarantee complete accuracy. The site and all information and materials provided are offered to users as is without any kind of warranty, either express or implied. All vehicles are subject to prior sale. The listed price does not include applicable taxes, title fees, and a documentation fee of $367.70.
    Greenway GMC serves Morris, Naperville, Joliet, Plainfield, Shorewood, Ottawa, Channahon, Minooka, Marseilles, Dwight and Oswego.

    KBB.com Consumer Reviews

    Kelley Blue Book - KBB.com
    Overall3.8Out of 5
    • Transmission trash

      By Jason on Monday, April 07, 2025

      2.0
      Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk
    • Fantastic truck

      By Jjj on Sunday, November 07, 2021

      5.0
      This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!
    • Don't judge a truck by the appearance

      By jmil on Wednesday, May 11, 2022

      3.0
      Great truck, loved it until the DEF tank heater malfunctioned and shut down the truck. Now sitting waiting for the replacement tank for over 10 weeks. Turns out every HD truck 2020 and 2021 has the same problem and all will need this replacement that is being produced at a snail's pace by GM. Per the dealership, last count, over 9000 trucks like mine are idle waiting for this part. $65000 waste of money and terrible service by GMC (not the local dealership).