2025 GMC Sierra 2500HD Denali Ultimate

  • Used
  • Diesel
$79,779Price
$80,004Final Price
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Classic Pre-Owned
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    The overview

    Exterior Color
    Onyx Black
    Interior Color
    Alpine Umber
    Odometer
    21,847 miles
    Body/Seating
    Truck/5 seats
    Seats
    5 seats
    Transmission
    10-Speed Automatic
    Drivetrain
    4WD
    Engine
    Duramax 6.6L V8 Turbodiesel
    VIN
    1GT4UXEY4SF252766
    Stock Number
    T252766

      The highlights

      • Lane departure
      • Leather upholstery
      • Automatic temperature control
      • Emergency communication system
      • Power moonroof
      • 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

      Max Trailering 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).

      Preferred Equipment Group 5SB

      • Technology Package
      • Safety Alert Seat
      • Rear Cross Traffic Alert
      • Trailer Side Blind Zone Alert

      Front Bucket Seats

      • Driver Memory
        Recalls driver presets for power driver seat and outside mirrors.

      X31 Off-Road Package

      • Hill Descent Control
      • Off-Road Suspension
        Includes twin-tube shocks.

      Technology Package

      • Multicolor 15" Diagonal Head-Up Display

      More pre-installed items

      • 12 Speakers
      • AM/FM radio: SiriusXM with 360L
      • Radio: AM/FM w/Premium GMC Infotainment System
      • SiriusXM w/360L Trial Subscription
      • 1-touch down
      • 1-touch up
      • Adaptive Cruise Control
      • Air conditioning
      • Auto-dimming rearview mirror
      • Automatic temperature control
      • Driver door bin
      • Driver vanity mirror
      • Emergency communication system: OnStar
      • Front beverage holders
      • Front dual zone A/C
      • Garage door transmitter
      • Heated steering wheel
      • Illuminated entry
      • Memory seat
      • Moonroof sunshade: manual
      • 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
      • Remote keyless entry
      • Speed control
      • Surround View Monitor: HD Surround Vision w/Hitch View yes
      • 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
      • Primary LCD size: 13.4"
      • Smart device integration: Apple CarPlay/Android Auto
      • Speaker type: brand
      • Speakers: 12
      • Steering wheel mounted audio controls
      • Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
      • Wireless Phone Charger: front
      • Wireless phone connectivity: Bluetooth
      • Front center armrest
      • Front seats: bucket
      • Genuine wood dashboard insert
      • Genuine wood door panel insert
      • Heated front seats
      • Heated rear seats
      • Leather steering wheel
      • Leather upholstery
      • Max seating capacity: 5
      • Power 4-way driver lumbar support
      • Power 4-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: 470hp @ 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: diesel
      • Torque: 975 lb.-ft. @ 1,600RPM
      • Transmission: 10 speed automatic
      • Ground clearance (min): 257mm (10.1")
      • Auto-dimming door mirrors
      • Bedliner
      • Bumpers: body-color
      • Door mirrors: chrome
      • Heated door mirrors
      • Hitch Class: IV
      • Left rear passenger door: conventional
      • Power door mirrors
      • Rear cargo: tailgate
      • Rear step bumper
      • Right rear passenger: conventional
      • Skid plates
      • Trailer hitch
      • Trailer sway control
      • Turn signal indicator mirrors
      • Compression ratio: 16.00 to 1
      • Curb weight: 3,748kg (8,264lbs)
      • Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
      • Engine displacement: 6.6 L
      • Engine torque: 975 lb.-ft. @ 1,600RPM
      • Exterior body width: 2,079mm (81.8")
      • Exterior height: 2,027mm (79.8")
      • Exterior length: 6,369mm (250.8")
      • 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: 1,383kg (3,048lbs)
      • 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")
      • Turning radius: 8.0m (26.3')
      • Wheelbase: 4,039mm (159.0")
      • Appearance: digital/analog
      • Auto high-beam headlights
      • Blind spot: Trailer Side Blind Zone Alert warning
      • Compass
      • Configurable
      • Delay-off headlights
      • Exterior parking camera cargo
      • Exterior parking camera front
      • Exterior parking camera left
      • Exterior parking camera rear: HD Rear Vision Camera w/Hitch View 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
      • Rain sensing wipers
      • 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
      • Front pedestrian detection: prevention
      • Ignition disable
      • Occupant sensing airbag
      • Overhead airbag
      • Panic alarm
      • Perimeter/approach lights
      • Rear collision: Rear Cross-Traffic Alert warning
      • Security system
      • Traction control
      This 2025 GMC Sierra 2500HD Denali Ultimate combines premium capability with luxury refinement. Finished in striking onyx black with Alpine Umber leather throughout, this crew cab presents a commanding presence on any terrain. Powered by a Duramax 6.6L V8 turbodiesel engine paired with a 10-speed automatic transmission and aggressive 4WD, it delivers serious towing authority with confidence and control.

      - MAX TRAILERING PACKAGE with integrated trailering system and camera provisions
      - Duramax 6.6L V8 turbodiesel engine with 10-speed automatic transmission
      - 4WD with 2-speed active transfer case and off-road suspension
      - 16-way power heated and ventilated leather front seats with lumbar support
      - Bose premium 12-speaker audio system with SiriusXM 360L trial subscription
      - Multicolor 15" heads-up display and HD surround vision camera system
      - Signature Denali Ultimate grille with LED cargo lighting and smoked amber roof markers
      - Apple CarPlay/Android Auto wireless smartphone integration
      - Automatic emergency braking, lane departure warning, and rear cross traffic alert
      - Ultrasonic front and rear park assist with trailer side blind zone alert

      The Denali Ultimate trim elevates the ownership experience with meticulous attention to detail. Genuine wood accents, a heated leather steering wheel, wireless charging, and a power sunroof create an inviting cabin. Advanced driver assistance features including forward collision alert, front pedestrian braking, and hill descent control work seamlessly with the rugged MAX TRAILERING PACKAGE to keep you in command whether you're navigating city streets or tackling demanding workloads. With 21,847 miles, this truck is ready to become your next trusted partner. Contact us today to schedule your test drive and experience what premium diesel capability truly means.

      KBB.com Consumer Reviews

      Kelley Blue Book Logo3.6out of 5 overall
      • 4.0

        Great truck , bad mileage

        by Dream truck owner on 11/8/2026 8:42:28 PM

        This truck has everything you want from a luxury heavy duty truck. The backseat is spacious enough to hold adults on road trips. It's got enough power to tow and haul a trailer fully loaded with wood. Four-wheel drive works spectacularly. All the interior amenities just increase the interior comfort. The seats are fantastic. Two things make it bring it down to a four-star, those are visibility out of the mirrors even with the cameras and fuel mileage which is to be expected with a big V8, just thought maybe even hauling empty, It would be above 16 or 17. All in all fantastic. Comfortable truck, mechanically no issues The infotainment center is a little bit buggy, but that doesn't bother me much. Quick reset and you're good to go…
      • 5.0

        Love this Truck!

        by Erick on 2/25/2026 11:54:52 AM

        Haven't had a problem with it 140k haven't touched it other than fluids and filters! Top of the line,!…
      • 5.0

        Fantastic Truck

        by TK2Camo on 2/14/2024 1:18:29 PM

        Solid and dependable, I still love this truck! Absolutely zero issues. Whether it's load after a home improvement run, pulling the camper into the mountains or across the country, or shifted into 4-wheeldrive...it does its job with excellence.…
      All reviews on KBB.com
      Based on 9 consumer ratings for 2020–2026 models. Privacy
        Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

        1Dealer Discount applied to everyone