2021 GMC Sierra 2500 HD Denali Truck Crew Cab

  • Used
Please Call
Keene Mitsubishi
Call 603-352-5900
We’re here to help

    The overview

    Exterior Color
    White Frost Tricoat
    Interior Color
    Jet Black
    Odometer
    157,146 miles
    Body/Seating
    Truck Crew Cab/5 seats
    Transmission
    Automatic
    Drivetrain
    4x4
    Engine
    V-8 cyl
    VIN
    1GT49REY0MF129921
    Stock Number
    G26192A
    • Show Me the CARFAX 1-Owner Badge

    The highlights

    • 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

    A closer look at what’s included

    Engine: Duramax 6.6L Turbo-Diesel V8

    • Capped Fuel Fill
    • 220 Amps Alternator
    • Dual Heavy-Duty 70 Amp Battery
      Includes 730 cold-cranking amps, maintenance-free with rundown protection and retained accessory power.
    • Winter Grille Cover

    Denali Ultimate Package

    • Technology Package
    • Power Sunroof

    Technology Package

    • Inside Rearview Auto-Dimming Rear Camera Mirror
      Includes full camera display.
    • Multicolor 15" Diagonal Head-Up Display

    GMC Protection Package

    • 1st & 2nd Row All-Weather Floor Liner
      Dealer-installed.
    • Black Front & Rear Molded Splash Guards
      Dealer-installed.

    Snow Plow Prep/Camper Package

    • 220 Amps Alternator
    • Skid Plates
      Protect the oil pan, front axle and transfer case.

    Driver Alert Package II

    • Forward Collision Alert
    • Lane Departure Warning
    • Automatic Emergency Braking
    • IntelliBeam Automatic High Beam On/Off

    Radio: Premium GMC Infotainment Sys w/Navigation

    • Bose Premium 7 Speaker Sound System
      Includes Richbass woofer.
    • SiriusXM w/360L
      Enjoy a trial subscription of the All Access package for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the All Access package, you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. Important: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental (FDR) use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM customer agreement at www.siriusxm.ca for complete terms and how to cancel. All fees, content, features and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.
    • HD Radio

    OnStar & GMC Connected Services Capable

    • 4G LTE Wi-Fi Hotspot Capable
      Terms and limitations apply. See onstar.com or dealer for details.
    • GMC Connected Access Capable
      Subject to terms. See onstar.com or dealer for details.

    Front Bucket Seats

    • 10-Way Power Driver Seat Adjuster w/Lumbar
    • 10-Way Power Passenger Seat Adjuster w/Lumbar
    • Driver Memory
      Recalls driver presets for power driver seat and outside mirrors.

    X31 Off-Road Package

    • Off-Road Suspension
      Includes tuned twin-tube shocks.
    • Hill Descent Control
    • Skid Plates
      Protect the oil pan, front axle and transfer case.

    Preferred Equipment Group 5SA

    • Driver Alert Package I
    • Driver Alert Package II
    • Safety Alert Seat
    • Radio: Premium GMC Infotainment Sys w/Navigation
      Includes 8" diagonal color touch-screen, multi-touch display, AM/FM stereo, Bluetooth streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings and greater memory.

    Driver Alert Package I

    • Ultrasonic Front & Rear Park Assist
    • Lane Change Alert w/Side Blind Zone Alert
    • Rear Cross Traffic Alert

    Engine: 6.6L V8 w/Direct Injection & VVT

    • Heavy-Duty 80 Amp Battery
      Includes 720 cold-cranking amps, maintenance-free with rundown protection and retained accessory power.
    • GVWR: 10,650 lbs

    ProGrade Trailering System

    • Hitch Guidance w/Hitch View
      With image adjustment and pan/zoom/tilt.
    • In-Vehicle Trailering System App
      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 monitoring system is factory ordered and sensors are installed.

    More pre-installed items

    • Console-Mounted Safe
      Dealer-installed.
    • Front License Plate Kit
      Will be forced on orders with ship-to states that require a front license plate.
    • Wheels: 20" Multi-Dimensional Polished Aluminum
      (50.8 cm)
    • Rear Underseat Storage
      Dealer-installed. Includes composite storage bin with lockable lid.
    • 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: Android Auto/Apple CarPlay
    • Speaker type: Bose
    • Speakers: 7
    • Steering wheel mounted audio controls
    • Wireless phone connectivity: Bluetooth
    • Front center armrest
    • Front seats: bucket
    • Genuine wood console insert
    • Genuine wood door panel insert
    • 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): 257mm (10.1")
    • Auto-dimming door mirrors
    • Bedliner
    • Bumpers: body-color
    • 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
    • Tailpipe finisher: polished
    • Trailer hitch receiver
    • Trailer sway control
    • Turn signal indicator mirrors
    • Compression ratio: 16.00 to 1
    • Curb weight: 3,515kg (7,749lbs)
    • 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: 2,023mm (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")
    • Payload: 1,616kg (3,563lbs)
    • 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")
    • Towing capacity: 8,391kg (18,500lbs)
    • 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
    • Exterior parking camera left
    • Exterior parking camera rear
    • Exterior parking camera right
    • Front fog lights
    • Front reading lights
    • Fully automatic headlights
    • Heads up display
    • 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: Rear Cross-Traffic Alert warning
    • Security system
    • Traction control
    This 2021 White Frost Tricoat GMC Sierra 2500HD Denali 4WD is well equipped and includes these features and benefits:

    Clean CARFAX.


    Fairfield's Auto Group, located in beautiful Keene, NH, and serving the New Hampshire, Vermont, Massachusetts, and New England region. Our experienced sales staff is eager to share its knowledge and enthusiasm with you. They'll work with you to find the right vehicle at a price you can afford. Come on in and take a test drive! Please call (603) 352-7700.

    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

    A name you can trust

    Keene Mitsubishi is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
    More about us

    KBB.com Consumer Reviews

    Kelley Blue Book Logo3.8out of 5 overall
    • 2.0

      Transmission trash

      by Jason on Monday, April 07, 2025

      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
    • 5.0

      Fantastic truck

      by Jjj on Sunday, November 07, 2021

      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!
    • 3.0

      Don't judge a truck by the appearance

      by jmil on Wednesday, May 11, 2022

      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).