Meet the 2026 GMC Sierra 2500HD Denali Ultimate, a full-size heavy-duty pickup engineered for those who demand capability without compromise.
- Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic transmission
- 4WD with 2-Speed Active Transfer Case and off-road suspension
- Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin trailer harness
- Premium Bose 12-speaker audio system with SiriusXM 360L
- Apple CarPlay and Android Auto connectivity with wireless phone projection
- 15-inch diagonal head-up display with multicolor customization
- HD Surround Vision with bed view camera and trailer camera provisions
- Heated and ventilated leather front seats with 16-way power adjustment and lumbar support
- Heated rear seats with split-folding capability
- Power moonroof with auto-dimming rear-view mirror
- Automatic emergency braking with forward collision alert and front pedestrian braking
- Lane departure warning and rear cross traffic alert
- Trailer side blind zone alert with hitch guidance and in-vehicle trailering app
- Signature Denali Ultimate grille in Vadar Chrome with LED lighting
- 20-inch ultra-bright machined aluminum wheels
This Sierra carries only 4,873 miles, presenting a rare opportunity to own a virtually new heavy-duty truck with premium appointments. The Denali Ultimate trim provides full grain leather throughout the cabin, complemented by genuine wood dashboard and door panel inserts that reflect a refined approach to truck interiors. Heated and ventilated seating, along with a heated steering wheel, ensures comfort in any weather condition.
The Duramax diesel engine delivers the torque and efficiency expected from GMC's heavy-duty lineup, paired with a capable 10-speed automatic transmission designed for both hauling and everyday driving. The 4WD system with active transfer case and off-road suspension handles challenging terrain while maintaining highway composure. The spray-on bedliner with GMC logo protects your investment.
Technology integration stands out with the premium GMC infotainment system, wireless charging, and comprehensive camera systems. The bed view camera with trailer camera provisions simplifies backing and maneuvering, while the hitch guidance technology makes trailer hitching straightforward. OnStar services provide connectivity and peace of mind.
Safety features are comprehensive, including automatic emergency braking, multiple airbag systems, and an industry-leading suite of driver assistance technologies. The trailer tire pressure monitoring system and in-vehicle trailering app deliver practical utility for those towing frequently.
The Gooseneck/5th Wheel Prep Package confirms this truck's readiness for serious hauling applications, with the hitch platform already factory-installed and bed-mounted connections ready to accept professional-grade hitching systems.
This 2026 Sierra 2500HD Denali Ultimate represents a significant investment in capability, comfort, and technology. We invite you to visit our showroom and experience the truck's commanding presence and refined appointments firsthand.
Used 2026 GMCSierra 2500 HD Denali Ultimate
- Diesel
- Exterior Color
- Sterling
- Interior Color
- Alpine Umber
- Odometer
- 4,873 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- 10 speed automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT4UXEY2TF257918
- Stock Number
- 6D0432A
Highlighted Features
- 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
Included Packages & Accessories
- Gooseneck/5th Wheel Prep Package
- 12 Speakers
- AM/FM radio: SiriusXM with 360L
- Premium audio system: Premium GMC Infotainment System
- Radio: AM/FM Stereo with Premium GMC Infotainment System
- Air Conditioning
- Automatic temperature control
- Front dual zone A/C
- Rear window defroster
- Heads-Up Display
- Memory seat
- Power driver seat
- Power steering
- Power windows
- Remote keyless entry
- Steering wheel mounted audio controls
- Speed-sensing steering
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Emergency communication system: OnStar
- Front anti-roll bar
- Front wheel independent suspension
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power moonroof
- Pickup Box
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Speed control
- 220-Amp Alternator
- Block heater
- Auto-dimming door mirrors
- Bumpers: body-color
- Front License Plate Kit
- Heated door mirrors
- IntelliBeam Automatic High Beam on/Off
- Power door mirrors
- Rear step bumper
- Turn signal indicator mirrors
- Apple CarPlay/Android Auto
- Auto-dimming Rear-View mirror
- Automatic Emergency Braking
- Buckle to Drive
- Compass
- Driver door bin
- Driver vanity mirror
- Following Distance Indicator
- Forward Collision Alert
- Front Pedestrian Braking
- Front reading lights
- Garage door transmitter
- Genuine wood dashboard insert
- Genuine wood door panel insert
- Heated steering wheel
- Illuminated entry
- Leather steering wheel
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Rear reading lights
- Rear seat center armrest
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trip computer
- Voltmeter
- Front Center Armrest
- Full Grain Leather Seat Trim
- Heated front seats
- Heated rear seats
- Power passenger seat
- Split folding rear seat
- Ventilated front seats
- Passenger door bin
- Hitch Guidance with Hitch View
- in-Vehicle Trailering System App
- Alloy wheels
- Wheels: 20" Ultra-Bright Machined Aluminum
- Rain sensing wipers
- Variably intermittent wipers
- 3.42 Axle Ratio
- Preferred Equipment Group 5SB
- Technology Package
- X31 Off-Road Package
- Bose Premium Series 12-Speaker System
- SiriusXM with 360L Trial Subscription
- Steering Wheel Audio Controls
- Electric Rear-Window Defogger
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Driver Memory
- Push Button Start
- Remote Vehicle Starter System
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Off-Road Suspension
- Keyless Open and Start
- Power Sunroof
- Hill Descent Control
- Unauthorized Entry Theft-Deterrent System
- 2-Speed Active Transfer Case
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- Rear Wheelhouse Liners
- Signature Denali Ultimate Grille in Vadar Chrome
- Spray-on Pickup Bedliner with GMC Logo
- 2 Charge-Only Rear USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- 2 USB Ports
- Bed View Camera with Two Trailer Camera Provisions
- Floor-Mounted Center Console
- HD Surround Vision
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
- OnStar Services Capable
- Rear Cross Traffic Alert
- Trailer Cam Provisions and Trailer Viewing Software
- Trailer Side Blind Zone Alert
- Ultrasonic Front and Rear Park Assist
- Wireless Charging
- Wireless Phone Projection
- 16-Way Power Driver Seat Adjuster with Lumbar
- 16-Way Power Passenger Seat Adjuster with Lumbar
- Front Bucket Seats
- Heated 2nd Row Outboard Seats
- Heated Driver and Front Outboard Passenger Seats
- Safety Alert Seat
- Ventilated Driver and Front Passenger Seats
- Trailer Tire Pressure Monitor Sensors
- Deep-Tinted Glass
- Front Rain-Sensing Wipers
- Power Front Passenger Windows with Express Up/Down
- Power Sliding Rear Window with Defogger
Detailed Specifications
- 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: 3,734kg (8,233lbs)
- 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: 1,404kg (3,096lbs)
- 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
Standard Features
- Technology Package
- Safety Alert Seat
- Rear Cross Traffic Alert
- Trailer Side Blind Zone Alert
- Wireless Phone Projection
- Bose Premium Series 12-Speaker System
- SiriusXM with 360L Trial Subscription
- Floor-Mounted Center Console
- Electric Rear-Window Defogger
- Push Button Start
- Remote Vehicle Starter System
- Keyless Open and Start
- OnStar Services Capable
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 Charge-Only Rear USB Ports
- 2 USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- Spray-on Pickup Bedliner with GMC Logo
- HD Surround Vision
- Bed View Camera with Two Trailer Camera Provisions
- Trailer Cam Provisions and Trailer Viewing Software
- Heated Driver and Front Outboard Passenger Seats
- Ventilated Driver and Front Passenger Seats
- Heated 2nd Row Outboard Seats
- Deep-Tinted Glass
- Signature Denali Ultimate Grille in Vadar Chrome
- Steering Wheel Audio Controls
- LED Smoked Amber Roof Marker Lamps
- LED Cargo Area Lighting
- Manual Tilt-Wheel/Telescoping Steering Column
- Power Sunroof
- Unauthorized Entry Theft-Deterrent System
- Universal Home Remote
- Power Sliding Rear Window with Defogger
- Power Front Passenger Windows with Express Up/Down
- Wireless Charging
- Ultrasonic Front and Rear Park Assist
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- X31 Off-Road Package
- Trailer Tire Pressure Monitor Sensors
- 2-Speed Active Transfer Case
- 16-Way Power Driver Seat Adjuster with Lumbar
- 16-Way Power Passenger Seat Adjuster with Lumbar
- Driver Memory
- Hill Descent Control
- Off-Road Suspension
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
Dealer Notes
KBB.com Consumer Reviews
²Units are available to order without dealer installed options listed above.
Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. This site, and all information and materials appearing on it, are presented to the user “as is” without warranty of any kind, either express or implied. All vehicles are subject to prior sale. Price does not include applicable tax, title, license and $225 documentation handling fees. Vehicles shown at different locations are not currently in our inventory (Not in Stock) but can be made available to you at our location within a reasonable date from the time of your request, not to exceed one week.
Manufacturer’s Rebates/ Private incentives may be subject to residency restrictions. Any customer not meeting the residency restrictions will receive a dealer discount in the same amount of the manufacturer’s rebate.
Loaner vehicles and Demo Vehicles may have more mileage than standard new vehicle inventory. Please contact dealer for additional details.
*The arrival timeline is an estimate. It may vary due to circumstances beyond Subaru’s or the retailer’s control.
