Used 2021 GMCSierra 3500HD SLT

  • Diesel
Located at
Twin City Buick/GMC
    Exterior Color
    Brownstone Metallic
    Interior Color
    Dark Walnut/Slate
    Odometer
    91,711 miles
    Body/Seating
    Truck/5 seats
    Seats
    5 seats
    Transmission
    ALLISON 10-SPEED AUTOMATIC
    Drivetrain
    Four Wheel Drive
    Engine
    8 Cylinder Engine
    VIN
    1GT49UEY6MF121146
    Stock Number
    MF121146B
    GMC Sierra 3500HD

    Highlighted Features

    • Navigation system
    • Lane departure
    • Leather upholstery
    • Automatic temperature control
    • Power moonroof
    • Premium audio system
    • Wireless phone connectivity
    • Parking sensors
    • Exterior parking camera front
    • Exterior parking camera left
    • Exterior parking camera right
    • Exterior parking camera rear

    Included Packages & Accessories

    • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App
    • Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
    • Pickup bed includes bed assist step (Deleted when (ZW9) pickup bed delete is ordered.)
    • GVWR, 11,350 lbs. (5148 kg) with single rear wheels (Included and only available with TK30743 model and (L8T) 6.6L V8 gas engine. Requires single rear wheels.)
    • Air filter, heavy-duty
    • Air filtration monitoring
    • Transfer case, two-speed active electronic Autotrac with push button control (Requires 4WD models.)
    • Auto-locking rear differential
    • Four wheel drive
    • Cooling, external engine oil cooler
    • Cooling, auxiliary external transmission oil cooler
    • 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
    • Recovery hooks, front, frame-mounted, black
    • Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
    • Suspension Package (Not available with (X31) Off-Road Package.)
    • 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. Not included with (ZW9) pickup bed delete.)
    • Tire, spare LT275/70R18 all-terrain, blackwall (Included and only available with (QF6) LT275/70R18E all-terrain, blackwall tires or (QF9) LT275/65R20 all-terrain, blackwall tires with (E63) pickup bed models. Available to order when (ZW9) pickup bed delete and (QF6) LT275/70R18E all-terrain, blackwall tires are ordered.)
    • Single rear wheels
    • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door (Deleted with (ZW9) pickup bed delete.)
    • Bumper, front chrome lower
    • Bumper, rear chrome with bumper CornerSteps
    • CornerStep, rear bumper
    • Bed Step, Black integrated on forward portion of bed on driver and passenger side (Not available with (ZW9) pickup bed delete.)
    • Moldings, beltline, stainless steel
    • Wheelhouse liners, rear (Not available with dual rear wheel models.)
    • Cargo tie downs (12), fixed, rated at 500 lbs per corner
    • Grille, Chrome surround with high gloss Black mesh and Chrome inserts
    • Fog lamps, LED
    • Taillamps, LED signature taillight with LED stop and reverse light
    • 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
    • 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])
    • Mirror caps, chrome
    • Glass, deep-tinted
    • Door handles, chrome
    • Tailgate, GMC MultiPro Tailgate with six functional load/access features (Deleted with (ZW9) pickup bed delete.)
    • Tailgate and bed rail protection caps, top (Deleted with (ZW9) pickup bed delete.)
    • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light (Deleted with (ZW9) pickup bed delete.)
    • HD Radio
    • 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
    • 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 underseat storage, (includes child seat top tether anchor)
    • Driver memory, recalls driver presets for power driver seat and outside mirrors
    • Floor covering, color-keyed carpeting
    • Steering wheel, leather-wrapped
    • Steering wheel, heated
    • Steering column, manual Tilt-Wheel and telescoping
    • Steering wheel audio controls
    • 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
    • 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. With (ZW9) pickup bed delete no provision for a trailer tire pressure monitor system will exist but all the other (U1D) features will remain.)
    • Exterior Temperature Display located in radio display
    • Compass, located in instrument cluster
    • Window, power front, drivers express up/down
    • Remote vehicle starter system
    • Cruise control, steering wheel-mounted
    • Theft-deterrent system, unauthorized entry
    • Steering column, lock control, electrical
    • 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) (Deleted with (ZW9) pickup bed delete.)
    • Air conditioning, dual-zone automatic climate control
    • Air vents, rear
    • Mirror, inside rearview auto-dimming
    • 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 (Deleted with (ZW9) pickup bed delete.)
    • Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt (Deleted with (ZW9) pickup bed delete.)
    • Rear seat reminder
    • 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
    • Garage door transmitter
    • Heated steering wheel
    • Illuminated entry
    • Memory seat
    • Moonroof sunshade: manual
    • Navigation system
    • Overhead console
    • Passenger door bin
    • Passenger vanity mirror
    • Power moonroof
    • 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 tires: 275/65SR20.0E
    • Front wheel independent suspension
    • Power steering
    • Rear tires: 275/65SR20.0E
    • Single rear wheels
    • Speed-sensing steering
    • Tires: all-terrain
    • Wheel size: 20"
    • 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
    • Speaker type: Bose
    • Speakers: 7
    • 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
    • Block heater
    • Compressor: intercooled turbo
    • Cylinder configuration: V-8
    • Drive type: four-wheel
    • Engine liters: 6.6L
    • Engine location: front
    • Fuel tank capacity: 36.0gal.
    • Horsepower: 445hp @ 2,800RPM
    • Hybrid traction battery type: none
    • Manual-shift auto
    • Mode select transmission
    • Number of valves: 32
    • Rear locking differential
    • Recommended fuel: Diesel
    • Standard fuel economy fuel type: gasoline
    • Torque: 910 lb.-ft. @ 1,600RPM
    • Transmission: 10 speed automatic
    • Variable valve control
    • Ground clearance (min): 284mm (11.2")
    • Auto-dimming door mirrors
    • Bedliner
    • Bumpers: chrome
    • Door mirrors: chrome
    • 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
    • Compression ratio: 16.00 to 1
    • Curb weight: 3,573kg (7,877lbs)
    • Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
    • Engine displacement: 6.6 L
    • Engine horsepower: 445hp @ 2,800RPM
    • Engine torque: 910 lb.-ft. @ 1,600RPM
    • Exterior body width: 2,079mm (81.8")
    • Exterior height: 2,054mm (80.9")
    • Exterior length: 6,349mm (249.9")
    • 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")
    • GVWR: 5,488kg (12,100lbs)
    • Payload: 1,898kg (4,185lbs)
    • 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")
    • Towing capacity: 9,072kg (20,000lbs)
    • Turning radius: 8.0m (26.3')
    • Wheelbase: 4,037mm (158.9")
    • Appearance: analog
    • Auto high-beam headlights
    • Blind spot: Lane Change Alert with Side Blind Zone Alert warning
    • Compass
    • Delay-off headlights
    • Exterior parking camera cargo
    • Exterior parking camera front: HD Surround Vision yes
    • Exterior parking camera left: HD Surround Vision yes
    • Exterior parking camera rear
    • Exterior parking camera right: HD Surround Vision yes
    • Front fog lights
    • Front reading lights
    • Fully automatic headlights
    • Lane departure: Lane Departure Warning warning
    • Low tire pressure warning
    • Oil pressure gauge
    • Outside temperature display
    • Parking sensors: Front and Rear Park Assist front and rear
    • 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
    • Forward collision: Forward Collision Alert with Automatic Braking mitigation
    • Ignition disable
    • Occupant sensing airbag
    • Overhead airbag
    • Panic alarm
    • Perimeter/approach lights
    • Rear collision: Cross Traffic Alert warning
    • Security system
    • Traction control

    Dealer Notes

    Why BUY from Twin City Buick GMC?
    When you choose this Brownstone Metallic 2021 GMC Sierra 3500HD SLT with 91,711 miles, you are not just buying a used vehicle - you are investing in quality, reliability and peace of mind. Our clientele depend on us for Transparent Pricing, Convenience and, most importantly, Customer FIRST Service!

    What this vehicle includes:

    SLT Convenience Package

    • Power Sliding Rear Window with Defogger
    • Front Bucket Seats
    • Floor-Mounted Center Console
    • 2nd Row Heated Outboard Seats
    • Ventilated Driver and Front Passenger Seats
    • 2 USB Ports Inside Console
    • 2 USB Ports (first Row)
    • LED Smoked Amber Roof Marker Lamps
    • Universal Home Remote

    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 ($645 value)

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

    X31 Off-Road and Protection Package ($1,380 value)

    • Spray-On Pickup Bed Liner with GMC Logo
    • 20 Machined Aluminum Wheels
    • LT275/65R20 AT BW Tires
    • All-Weather Floor Liners

    X31 Off-Road Package

    • Hill Descent Control
    • Skid Plates
    • Off-Road Suspension

    SLT Premium Package

    • 6 Rectangular Chromed Tubular Assist Steps
    • Spray-On Pickup Bed Liner with GMC Logo

    Preferred Equipment Group 4SA

    • GMC Connected Access Capable
    • 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 Front Windows with Driver Express Up/down
    • Rear Wheelhouse Liners
    • Remote Vehicle Starter System
    • Electric Rear-Window Defogger
    • Compass Located in Instrument Cluster
    • Chrome Surround Grille with High Gloss Black Mesh
    • Integrated Trailer Brake Controller
    • 120-Volt Bed Mounted Power Outlet
    • 120-Volt Instrument Panel Power Outlet
    • 12-Volt Rear Auxiliary Power Outlet
    • 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
    • Steering Wheel Audio Controls
    • 2nd Row Dual USB Charge-Only Ports
    • Unauthorized Entry Theft-Deterrent System
    • 4G LTE Wi-Fi Hotspot Capable
    • Wireless Phone Projection

    Gooseneck/5th Wheel Package

    • Spray-On Pickup Bed Liner with GMC Logo
    • Bed View Camera with Two Trailer Camera Provisions
    • Gooseneck/5th Wheel Prep Package

    SLT Preferred Package

    • AM/FM Stereo with Premium GMC Infotainment System and Navigation
    • Wireless Charging
    • Bose Premium 7 Speaker Sound System
    • Bed View Camera with Two Trailer Camera Provisions
    • HD Surround Vision with 2 Trailer View Camera Provisions

    Power Sunroof ($995 value)

      Duramax 6.6L Turbo-Diesel V8 Engine ($9,890 value)



        Safety and Security

        • The vehicle is equipped with a system that senses, and then prepares, the vehicle and/or occupants, for an impending forward collision.
        • The vehicle is equipped with a camera that displays an image of the area behind the vehicle on an interior display.

        Technology and Telematics

        • Without the need for a manufacturer specific app to be installed on the smart device, the vehicle infotainment system can access and control functions of a smart device physically plugged-into the vehicle.
        • Apple CarPlay/Android Auto smart device wireless mirroring
        • Mobile devices can wirelessly connect to the internet through the vehicle's private mobile network.

        EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, TRANSMISSION, ALLISON 10-SPEED AUTOMATIC, GVWR, 12,100 LBS. (5488 KG) WITH SINGLE REAR WHEELS, REAR AXLE, 3.42 RATIO, WHEELS, 20 (50.8 CM) MACHINED ALUMINUM WHEEL, TIRES, LT275/65R20 ALL-TERRAIN, BLACKWALL, BROWNSTONE METALLIC, SEATS, FRONT BUCKET WITH CENTER CONSOLE, DARK WALNUT/SLATE, PERFORATED LEATHER-APPOINTED FRONT OUTBOARD SEATING POSITIONS, AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8 DIAGONAL COLOR TOUCH-SCREEN, SLT PREMIUM PACKAGE, SLT PREFERRED PACKAGE, SLT CONVENIENCE PACKAGE, GOOSENECK / 5TH WHEEL PACKAGE, X31 OFF-ROAD AND PROTECTION PACKAGE, DRIVER ALERT PACKAGE I, DRIVER ALERT PACKAGE II, X31 OFF-ROAD PACKAGE, ENGINE BLOCK HEATER, ALTERNATOR, 220 AMPS, GOOSENECK / 5TH WHEEL PREP PACKAGE, SKID PLATES, EXHAUST BRAKE, SUNROOF, POWER, ASSIST STEPS, CHROMED TUBULAR, 6 RECTANGULAR CAB LENGTH, BED LINER, SPRAY-ON, WINTER GRILLE COVER, INTELLIBEAM, AUTOMATIC HIGH BEAM ON/OFF, LAMPS, SMOKED AMBER LED ROOF MARKER, (LED), WINDOW, POWER, REAR SLIDING, BOSE SOUND SYSTEM, PREMIUM 7-SPEAKER SYSTEM, SEATS, VENTILATED DRIVER AND FRONT PASSENGER, SEATS, HEATED SECOND ROW OUTBOARD SEATS, CENTER CONSOLE, FLOOR-MOUNTED, LPO, ALL-WEATHER FLOOR LINER, 1ST AND 2ND ROWS, UNIVERSAL HOME REMOTE, WIRELESS CHARGING, USB PORTS, 2 (FIRST ROW) LOCATED ON INSTRUMENT PANEL, AUTOMATIC EMERGENCY BRAKING, HILL DESCENT CONTROL, FRONT AND REAR PARK ASSIST, ULTRASONIC, HD SURROUND VISION WITH TWO TRAILER VIEW CAMERA PROVISIONS, BED VIEW CAMERA, REAR CROSS TRAFFIC ALERT, LANE CHANGE ALERT WITH SIDE BLIND ZONE ALERT, LANE DEPARTURE WARNING, FOLLOWING DISTANCE INDICATOR, FORWARD COLLISION ALERT, SAFETY ALERT SEAT Come on in to Twin City Buick GMC today at 3046 Airport Highway Alcoa TN 37701 or call to schedule a test drive!

        KBB.com Consumer Reviews

        Kelley Blue Book - KBB.com
        Overall4.2Out of 5
        • Great tough truck

          By MoieseMT on 3/28/2025 12:25:32 PM

          5.0
          Bought this Denali 3500 while looking for a 2500. Glad I did, Lots of power, redesigned in 2020, and great comfortable ride.…
        • Great Truck

          By GMC 3500 on 6/10/2024 4:55:33 PM

          5.0
          Awesome Truck. Good fuel economy for a big truck. Transmission shifts smoothly, I really like the 8' bed.…
        • 2020 GMC Denali 3500 HD Duramax is a BEAST!

          By Merlinsmerc on 1/23/2021 1:44:28 AM

          5.0
          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!…