Used 2020 GMCSierra 2500HD Denali Truck Duramax V8 Turbodiesel

We Do Business Your Way.
  • Our Absolute BEST Price, Up-Front, Every Time.
  • NO Dealer Fees, Hidden Fees or Bogus Mark Ups.
  • Non-Commissioned Salespeople.
  • 3 Day/300 Mile Money Back Guarantee.
    Exterior Color
    Onyx Black
    Interior Color
    Jet Black
    Odometer
    55,000 miles
    Transmission
    10-Speed Automatic
    Drivetrain
    4WD
    Engine
    Duramax 6.6L V8 Turbodiesel
    VIN
    1GT49REY6LF255294
    Stock Number
    CA0400
    GMC Sierra 2500HD
    • AutoCheck

    Included Packages & Accessories

    • 3.73 Rear Axle Ratio
    • 3.42 Axle Ratio
    • Wheels: 20" Multi-Dimensional Polished Aluminum
    • Forge Perforated Leather-Appointed Front Seat Trim
    • Pickup Box
    • Trailer Tire Pressure Monitor Sensors
    • 220 Amps Alternator
    • Engine Block Heater
    • Winter Grille Cover
    • Exhaust Brake
    • Heavy-Duty 80 Amp Battery
    • 2 USB Ports (1st Row)
    • Lane Departure Warning System
    • 4-Wheel Disc Brakes
    • Apple CarPlay/Android Auto
    • Premium audio system: Premium GMC Infotainment System
    • Auto High-beam Headlights
    • AM/FM radio: SiriusXM
    • Compass
    • 7 Speakers
    • Auto-dimming Rear-View mirror
    • Ventilated front seats
    • Variably intermittent wipers
    • Turn signal indicator mirrors
    • Trip computer
    • Traction control
    • Tilt steering wheel
    • Telescoping steering wheel
    • Steering wheel mounted audio controls
    • Split folding rear seat
    • Speed-sensing steering
    • Speed control
    • Security system
    • Remote keyless entry
    • Rear window defroster
    • Rear step bumper
    • Rear seat center armrest
    • Rear reading lights
    • Power windows
    • Power steering
    • Power passenger seat
    • Power driver seat
    • Power door mirrors
    • Passenger vanity mirror
    • Passenger door bin
    • Panic alarm
    • Overhead console
    • Overhead airbag
    • Outside temperature display
    • Occupant sensing airbag
    • Memory seat
    • Low tire pressure warning
    • Illuminated entry
    • Heated steering wheel
    • Heated rear seats
    • Heated front seats
    • Heated door mirrors
    • Genuine wood door panel insert
    • Genuine wood console insert
    • Garage door transmitter
    • Fully automatic headlights
    • Front wheel independent suspension
    • Front reading lights
    • Front fog lights
    • Front dual zone A/C
    • Front anti-roll bar
    • Dual front side impact airbags
    • Dual front impact airbags
    • Driver vanity mirror
    • Driver door bin
    • Delay-off headlights
    • Bumpers: body-color
    • Brake assist
    • Automatic temperature control
    • Auto-dimming door mirrors
    • Alloy wheels
    • ABS brakes
    • Voltmeter
    • Tachometer
    • Navigation System
    • Front Center Armrest
    • Electronic Stability Control
    • Air Conditioning
    • Preferred Equipment Group 5SA
    • 10-Way Power Driver Seat Adjuster w/Lumbar
    • Denali Ultimate Package
    • Driver Alert Package I
    • Driver Alert Package II
    • Technology Package
    • Radio: Premium GMC Infotainment Sys w/Navigation
    • Electric Rear-Window Defogger
    • Rear Camera Mirror
    • OnStar & GMC Connected Services Capable
    • Bed View Camera
    • 120-Volt Instrument Panel Power Outlet
    • Power Sunroof
    • Spray-On Pickup Box Bed Liner w/Denali Logo
    • 6" Rectangular Chromed Tubular Assist Steps
    • Deep-Tinted Glass
    • LED Smoked Amber Roof Marker Lamps
    • LED Cargo Area Lighting
    • Chrome Recovery Hooks
    • Polished Exhaust Tip
    • Integrated Trailer Brake Controller
    • Gooseneck/5th Wheel Package
    • Skid Plates
    • Off-Road Suspension
    • 2-Speed Active Transfer Case
    • Driver Memory
    • Power Sliding Rear Window w/Defogger
    • 10-Way Power Passenger Seat Adjuster w/Lumbar
    • GMC Connected Access Capable
    • Power Front Passenger Windows w/Express Up/Down
    • Power Rear Windows w/Express Down
    • Keyless Open & Start
    • Power Door Locks
    • Power Windows w/Driver Express Up/Down
    • Rear Wheelhouse Liners
    • Remote Vehicle Starter System
    • Compass Located In Instrument Cluster
    • Floor-Mounted Center Console
    • Signature Denali Grille
    • Safety Alert Seat
    • Hill Descent Control
    • Wireless Charging
    • Heated Driver & Front Outboard Passenger Seats
    • Heated 2nd Row Outboard Seats
    • 120-Volt Bed Mounted Power Outlet
    • 12-Volt Rear Auxiliary Power Outlet
    • Heated & Ventilated Front Bucket Seats
    • 2 USB Ports
    • Electrical Lock Control Steering Column
    • Manual Tilt-Wheel/Telescoping Steering Column
    • ProGrade Trailering System
    • Hitch Guidance w/Hitch View
    • IntelliBeam Automatic High Beam On/Off
    • In-Vehicle Trailering System App
    • SiriusXM w/360L
    • HD Radio
    • Ultrasonic Front & Rear Park Assist
    • Following Distance Indicator
    • Forward Collision Alert
    • Rear Cross Traffic Alert
    • Universal Home Remote
    • Automatic Emergency Braking
    • Steering Wheel Audio Controls
    • Lane Change Alert w/Side Blind Zone Alert
    • Bose Premium 7 Speaker Sound System
    • 2nd Row Dual USB Charge-Only Ports
    • Unauthorized Entry Theft-Deterrent System
    • Multicolor 15" Diagonal Head-Up Display
    • HD Rear Vision Camera
    • HD Surround Vision w/2 Trailer View Camera Provisions
    • 4G LTE Wi-Fi Hotspot Capable
    • X31 Off-Road Package
    • Gooseneck/5th Wheel Prep Package
    • Front Bucket Seats

    Included Packages & Options

    • Denali Ultimate Package$2,370
      • Technology Package
      • Power Sunroof
    • Technology Package$1,875
      • HD Surround Vision w/2 Trailer View Camera Provisions
      • Rear Camera Mirror
      • Keyless Open & Start
      • Bed View Camera
      • Multicolor 15" Diagonal Head-Up Display
    • Gooseneck/5th Wheel Package$795
      • Gooseneck/5th Wheel Prep Package
      • Bed View Camera
    Included Options
    • Trailer Tire Pressure Monitor Sensors$50
    • 220 Amps Alternator$150
    • Engine Block Heater$100

    Detailed Specifications

    • 1st and 2nd row curtain head airbags
    • 4-wheel ABS Brakes
    • ABS and Driveline Traction Control
    • Aluminum dash trim
    • Aluminum/genuine wood center console trim
    • Aluminum/genuine wood door trim
    • Anti-theft alarm system
    • Audio System Premium Brand : Premium GMC Infotainment System
    • Audio System Premium Brand Speakers: Bose
    • Audio controls on steering wheel
    • Audio system memory card slot
    • Automatic front air conditioning
    • Auxilliary engine cooler
    • Auxilliary transmission cooler
    • Bluetooth wireless phone connectivity
    • Braking Assist
    • Bucket front seats
    • Climate Controlled : Driver and passenger heated
    • Compass
    • Cruise control
    • Cruise controls on steering wheel
    • Daytime running lights
    • Digital Audio Input
    • Driver seat memory
    • Dual front air conditioning zones
    • Dual illuminated vanity mirrors
    • Electrochromatic auto-dimming mirrors
    • Electrochromatic rearview mirror
    • External temperature display
    • Fold-up cushion rear seats
    • Front Ventilated disc brakes
    • Front and rear reading lights
    • Front fog/driving lights
    • Heated driver mirror
    • Heated passenger mirror
    • Heated steering wheel
    • Integrated Navigation System : Yes
    • Leather seat upholstery
    • Leather/metal-look steering wheel trim
    • Memorized Settings for 2 drivers
    • Memorized Settings including door mirror(s)
    • Passenger Airbag
    • Polished aluminum rims
    • Power extendable trailer style exterior mirrors
    • Power remote driver mirror adjustment
    • Power remote passenger mirror adjustment
    • Power retractable mirrors
    • Power windows
    • Privacy glass: Deep
    • Rear seats center armrest
    • Remote Engine Start : Keyfob remote start
    • Remote power door locks
    • Remote window operation
    • Side airbag
    • SiriusXM AM/FM/HD/Satellite Radio
    • SiriusXM Satellite Radio(TM)
    • Speed-proportional power steering
    • Split rear bench
    • Stability controll with anti-roll
    • Suspension class: Off-road
    • Tachometer
    • Tilt and telescopic steering wheel
    • Total Number of Speakers: 7
    • Trailer hitch
    • Trip computer
    • Turn signal in mirrors
    • Urethane shift knob trim
    • Video Monitor Location: Front
    • Wheel Diameter: 20
    • Wheel Width: 8.5

    Standard Features

    • Technology Package
    • Power Sunroof
    • HD Surround Vision w/2 Trailer View Camera Provisions
    • Rear Camera Mirror
    • Keyless Open & Start
    • Bed View Camera
    • Multicolor 15" Diagonal Head-Up Display
    • Gooseneck/5th Wheel Prep Package
    • Bed View Camera
    • Driver Alert Package I
    • Driver Alert Package II
    • Safety Alert Seat
    • Radio: Premium GMC Infotainment Sys w/Navigation
    • Floor-Mounted Center Console
    • Compass Located In Instrument Cluster
    • Electric Rear-Window Defogger
    • Power Door Locks
    • Remote Vehicle Starter System
    • Keyless Open & Start
    • OnStar & GMC Connected Services Capable
    • 12-Volt Rear Auxiliary Power Outlet
    • 120-Volt Instrument Panel Power Outlet
    • 120-Volt Bed Mounted Power Outlet
    • 2 USB Ports
    • 2nd Row Dual USB Charge-Only Ports
    • HD Rear Vision Camera
    • Heated Driver & Front Outboard Passenger Seats
    • Heated & Ventilated Front Bucket Seats
    • Heated 2nd Row Outboard Seats
    • Steering Wheel Audio Controls
    • Manual Tilt-Wheel/Telescoping Steering Column
    • Electrical Lock Control Steering Column
    • Unauthorized Entry Theft-Deterrent System
    • Universal Home Remote
    • Power Sliding Rear Window w/Defogger
    • Power Windows w/Driver Express Up/Down
    • Power Front Passenger Windows w/Express Up/Down
    • Power Rear Windows w/Express Down
    • Wireless Charging
    • Spray-On Pickup Box Bed Liner w/Denali Logo
    • 6" Rectangular Chromed Tubular Assist Steps
    • Deep-Tinted Glass
    • Signature Denali Grille
    • LED Smoked Amber Roof Marker Lamps
    • LED Cargo Area Lighting
    • Rear Wheelhouse Liners
    • Chrome Recovery Hooks
    • Polished Exhaust Tip
    • X31 Off-Road Package
    • Integrated Trailer Brake Controller
    • ProGrade Trailering System
    • 2-Speed Active Transfer Case
    • Forward Collision Alert
    • Automatic Emergency Braking
    • IntelliBeam Automatic High Beam On/Off
    • Following Distance Indicator
    • Bose Premium 7 Speaker Sound System
    • SiriusXM w/360L
    • HD Radio
    • 4G LTE Wi-Fi Hotspot Capable
    • GMC Connected Access Capable
    • 10-Way Power Driver Seat Adjuster w/Lumbar
    • 10-Way Power Passenger Seat Adjuster w/Lumbar
    • Driver Memory
    • Ultrasonic Front & Rear Park Assist
    • Lane Change Alert w/Side Blind Zone Alert
    • Rear Cross Traffic Alert
    • Hitch Guidance w/Hitch View
    • In-Vehicle Trailering System App
    • Off-Road Suspension
    • Hill Descent Control
    • Skid Plates

    Dealer Notes

    2020 GMC Sierra 2500HD Denali **Here at Long-Lewis we believe in being transparent. We have no Doc fees, or any other hidden fees. We are a one price store and give our best price up front and they are clearly marked on all our inventory.** Onyx Black 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather.

    Recent Arrival! Odometer is 45249 miles below market average!

    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).
    We do not charge license fees, processing fees, documentation (DOC) fees or destination charges saving you thousands. Simply add the applicable sales tax and a $16.50 title fee, if in State. Other States' title fees may vary. Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. In the rare event of a mistake or the manufacturer changing rebates, we reserve the right to adjust the sale price accordingly. All vehicles are subject to prior sale.