2020 GMC Sierra 2500HD SLT Truck Double Cab

  • Used
  • Diesel
$53,998Details
Keene Mitsubishi
Location Details
Call 603-352-5900
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    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Jet Black
    Odometer
    18,840 miles
    Body/Seating
    Truck Double Cab/5 seats
    Transmission
    Automatic
    Drivetrain
    4x4
    Engine
    V-8 cyl
    VIN
    1GT29NEY5LF202764
    Stock Number
    G26266A
    • Show Me the CARFAX 1-Owner Badge

    The highlights

    • Navigation system
    • Lane departure
    • Leather upholstery
    • Automatic temperature control
    • Premium audio system
    • Wireless phone connectivity
    • Parking sensors
    • Exterior parking camera front
    • Exterior parking camera left
    • Exterior parking camera right
    • Exterior parking camera rear
    • Front dual zone A/C

    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

    Technology Package

    • HD Surround Vision w/2 Trailer View Camera Provisions
      Provides the driver with an overhead view of the scene around the vehicle on a center stack display.
    • Rear Camera Mirror
      Inside rearview auto-dimming with full camera display.
    • Bed View Camera
      Camera in the CHMSL to show a view of the cargo bed. Includes two trailer camera provisions.
    • Multicolor 15" Diagonal Head-Up Display

    SLT Convenience Package

    • Front Bucket Seats
    • Floor-Mounted Center Console
      Includes cup holders, cell phone storage, power cord management and hanging file folder capability.
    • Heated & Ventilated Front Bucket Seats
    • Power Sliding Rear Window w/Defogger

    Gooseneck/5th Wheel Package

    • Gooseneck/5th Wheel Prep Package
      Hitch platform to accept gooseneck or 5th wheel hitch. Includes hitch platform with tray to accept ball, stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).
    • Spray-On Pickup Box Bed Liner w/GMC Logo
      Does not include spray-on liner on tailgate due to black composite inner panel.
    • Bed View Camera
      Camera in the CHMSL to show a view of the cargo bed. Includes two trailer camera provisions.

    SLT Preferred Package

    • 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 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.
    • Bose Premium 7 Speaker Sound System
      Includes Richbass woofer.
    • Wireless Charging

    Driver Alert Package I

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

    Driver Alert Package II

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

    GMC Protection Package

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

    X31 Off-Road Package

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

    Snow Plow Prep/Camper Package

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

    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.

    Tires: LT275/70R18E AT BW

    • Spare LT275/70R18 AT BW Tire

    Front Bucket Seats

    • Heated Driver & Front Outboard Passenger Seats
    • 10-Way Power Driver Seat Adjuster w/Lumbar

    Front 40/20/40 Split-Bench Seats w/Lockable Storage

    • 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.
    • Heated Driver & Front Outboard Passenger Seats

    Radio: AM/FM w/Premium GMC Infotainment System

    • 6-Speaker Audio System Feature
    • 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

    Preferred Equipment Group 4SA

    • Radio: AM/FM w/Premium GMC Infotainment System
      Includes 8" diagonal color touch-screen, multi-touch display, Bluetooth streaming audio for music and most phones, featuring Android Auto and Apple CarPlay capability for compatible phones, advanced voice recognition, in-vehicle apps and personalized profiles for infotainment and vehicle settings.
    • Compass Located In Instrument Cluster
    • 4.2" Diagonal Color Display Driver Info Center
      Includes driver personalization.
    • Electric Rear-Window Defogger

    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: 10,550 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

    • Front License Plate Kit
      Will be forced on orders with ship-to states that require a front license plate.
    • Hitch Package
      Dealer-installed. Includes gooseneck ball and chain tiedown kit with case.
    • Rear Underseat Storage
      Dealer-installed. Includes composite storage bin.
    • Trailer Tire Pressure Monitor Sensors
      Includes set of 4 sensors. Sensor functionality requires (U1D) In-vehicle Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories.
    • 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
    • Navigation system
    • 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
    • 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: w/storage
    • 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 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 economy fuel type: gasoline
    • 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
    • Torque: 910 lb.-ft. @ 1,600RPM
    • Transmission: 10 speed automatic
    • Variable valve control
    • Ground clearance (min): 259mm (10.2")
    • 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: 3,455kg (7,616lbs)
    • 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: 2,031mm (80.0")
    • Exterior length: 6,107mm (240.5")
    • 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")
    • GVWR: 4,536kg (10,000lbs)
    • Payload: 1,608kg (3,546lbs)
    • Rear headroom: 1,013mm (39.9")
    • Rear hiproom: 1,530mm (60.2")
    • Rear legroom: 895mm (35.2")
    • Rear shoulder room: 1,648mm (64.9")
    • Towing capacity: 6,577kg (14,500lbs)
    • Turning radius: 7.5m (24.8')
    • Wheelbase: 3,795mm (149.4")
    • 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: HD Surround Vision yes
    • 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: UltraSonic 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
    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.

    This 2020 GMC Sierra 2500HD SLT is packed with impressive features that will elevate your driving experience. From the powerful Duramax 6.6L V8 Turbodiesel engine to the advanced technology and premium comfort, this truck is designed to handle any task with ease.

    - Duramax 6.6L V8 Turbodiesel engine
    - 10-Speed Automatic transmission
    - 4-Wheel Drive
    - Gooseneck/5th Wheel Package
    - SLT Convenience Package
    - SLT Preferred Package
    - Driver Alert Package I
    - Driver Alert Package II
    - X31 Off-Road Package
    - Snow Plow Prep/Camper Package
    - Bose Premium Audio System
    - Wireless Charging
    - Multicolor 15" Diagonal Head-Up Display
    - HD Surround Vision with Bed View Camera
    - Rear Camera Mirror
    - Heated and Ventilated Front Seats

    This Sierra 2500HD SLT is not just a work truck; it's a versatile and capable companion that can handle any terrain or towing task with confidence. The Duramax diesel engine delivers an impressive 445 horsepower and 910 lb-ft of torque, ensuring you have the power to tackle even the most demanding jobs.

    The advanced technology features in this Sierra 2500HD SLT will make your driving experience more convenient and enjoyable. The Multicolor Head-Up Display keeps important information in your line of sight, while the HD Surround Vision and Bed View Camera provide unparalleled visibility for maneuvering and hitching. The Bose Premium Audio System and Wireless Charging further enhance your comfort and convenience.

    For those who demand more from their truck, the X31 Off-Road Package and Snow Plow Prep/Camper Package equip this Sierra 2500HD SLT with the capabilities to tackle any terrain or weather condition. The skid plates, off-road suspension, and hill descent control ensure you can confidently navigate challenging environments.

    Whether you're hauling heavy loads, towing a trailer, or simply enjoying the open road, this 2020 GMC Sierra 2500HD SLT is the perfect companion. Experience the power, technology, and premium features that make this truck a true standout in its class. Visit our showroom today and let our knowledgeable team help you discover the perfect Sierra 2500HD for your needs.

    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…
    • 3.0

      Infotainment system unreliable!

      by Brian C on Friday, June 27, 2025

      The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another.…
    • 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!…
    Based on 13 consumer ratings for 2020–2026 models. Privacy