Located at Baker Buick GMC of Lowell.
- Duramax 6.6L V8 Turbodiesel Engine with 10-Speed Automatic and 4WD
- Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted harness
- Snow Plow Prep/Camper Package with 220-amp alternator and skid plates
- X31 Off-Road Package with off-road suspension and 2-speed active transfer case
- ProGrade Trailering System with hitch guidance and in-vehicle trailering app
- Signature Denali Ultimate Vader Chrome Grille with black badging package
- HD Surround Vision with bed view camera and trailer camera provisions
- Bose Premium 12-speaker sound system with SiriusXM 360L trial subscription
- Multicolor 15" head-up display with wireless phone projection capability
- Heated and ventilated front seats with 16-way power adjustment
- Power sunroof with spray-on bedliner featuring GMC logo
- Wireless charging with multiple USB charging ports throughout cabin
- Advanced safety features including automatic emergency braking and lane departure warning
- 20" ultra-bright machined aluminum wheels
The 2026 GMC Sierra 3500HD Denali Ultimate represents serious capability built for demanding work and lifestyle needs. This truck combines the proven performance of the Duramax 6.6L V8 Turbodiesel engine with thoughtful engineering designed for professional and recreational users alike. The 10-speed automatic transmission and 4WD system work together to provide reliable power delivery across diverse driving conditions and job sites.
This Sierra 3500HD arrives equipped with the Gooseneck/5th Wheel Prep Package, making it ready for specialized hitch installations without factory modifications. The Snow Plow Prep/Camper Package adds a 220-amp alternator and protective skid plates, accommodating heavy-duty work or extended adventures. The X31 Off-Road Package delivers off-road suspension and a 2-speed active transfer case for terrain versatility.
In the cabin, the Denali Ultimate trim surrounds you with premium materials and modern technology. Full grain leather seating with heated and ventilated functions provides day-long comfort. The Bose premium audio system with SiriusXM 360L trial subscription delivers exceptional sound quality, while wireless phone projection and charging simplify daily connectivity. The multicolor 15" head-up display presents critical information directly in your line of sight.
Safety and convenience features reflect GMC's commitment to protecting occupants and simplifying operation. HD Surround Vision, automatic emergency braking, lane departure warning, and a bed view camera with trailer provisions enhance awareness and control. The ProGrade Trailering System includes an in-vehicle app and hitch guidance to make towing decisions more confident.
The truck's distinctive styling combines the signature Denali Ultimate Vader Chrome grille with black badging and moldings, projecting purposeful elegance. The spray-on bedliner with GMC logo protects against wear and weather while reinforcing quality craftsmanship. LED cargo lighting and smoked amber roof marker lamps complete the premium exterior presentation.
This truck stands ready for whatever demands your work and lifestyle present. From the diesel engine's torque delivery to the comprehensive technology suite and genuine comfort appointments, the 2026 Sierra 3500HD Denali Ultimate serves as both a capable tool and a refined daily drive. Visit our showroom to experience how this truck aligns with your specific needs.
Pricing assumes qualification for the GMS discount.
New 2026 GMCSierra 3500HD Denali Ultimate 6.6L Duramax V8 Turbodiesel
- Diesel
- All New Inventory
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- New GMC
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- New GMC Sierra 3500HD
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- 2026 GMC Sierra 3500HD
- Exterior Color
- Onyx Black
- Interior Color
- Alpine Umber
- Body/Seating
- Truck/5 seats
- Seats
- 5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT4UYEY6TF355761
- Stock Number
- 26679
GMC
Sierra 3500HD
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- 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
Included Packages & Accessories
- Gooseneck/5th Wheel Prep Package
- 12 Speakers
- AM/FM radio: SiriusXM with 360L
- Premium audio system: 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 Services capable
- Front anti-roll bar
- Front wheel independent suspension
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Power moonroof
- Pickup Bed
- Brake assist
- Electronic Stability Control
- Lane Departure Warning System
- Exterior Parking Camera Rear
- Auto High-beam Headlights
- Delay-off headlights
- Front fog lights
- Fully automatic headlights
- Panic alarm
- Security system
- Speed control
- Block heater
- Dual Heavy-Duty 70 Amp-Hour Battery
- Auto-dimming door mirrors
- Bed Mounted Assist Handle
- Body Color Wheel Arch Moldings
- Bumpers: body-color
- Heated door mirrors
- IntelliBeam Automatic High Beam on/Off
- Power door mirrors
- Rear step bumper
- Turn signal indicator mirrors
- 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
- Alloy wheels
- Wheels: 20" Ultra-Bright Machined Aluminum
- Rain sensing wipers
- Variably intermittent wipers
- 3.42 Rear Axle Ratio
- Black Badging Package
- Preferred Equipment Group 5SB
- Snow Plow Prep/Camper Package
- Technology Package
- X31 Off-Road Package
- Bose Premium Series 12-Speaker System
- Radio: AM/FM Stereo with Premium GMC Infotainment 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
- Power Front Windows with Passenger Express Up/Down
- 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
- 220 Amp Alternator
- Black GMC Emblems
- Black Sierra Nameplates
- LED Cargo Area Lighting
- LED Smoked Amber Roof Marker Lamps
- ProGrade Trailering System
- Rear Wheelhouse Liners
- Signature Denali Ultimate Grille in Vader 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
- Auto-Dimming Inside Rearview Mirror with Camera
- Bed View Camera with Two Trailer Camera Provisions
- Floor-Mounted Center Console
- GMC Premium 13.4" Diagonal Information Display
- HD Surround Vision
- Multicolor 15" Diagonal Head-Up Display
- Premium Front Floor Liners with Removable Carpet Insert
- Premium Rear Floor Liners with Removable Carpet Insert
- Rear Cross Traffic Alert
- Safety Alert Seat
- Trailer Camera Provisions
- 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
- Ventilated Driver and Front Passenger Seats
- Hitch Guidance with Hitch View
- in-Vehicle Trailering App
- Trailer Tire Pressure Monitor Sensors
- Deep-Tinted Glass
- Front Rain-Sensing Wipers
- Power Sliding Rear Window with Defogger
Included Packages & Options
- Snow Plow Prep/Camper Package$530
- 220 Amp Alternator
- Premium Front Floor Liners with Removable Carpet Insert$130
- Premium Rear Floor Liners with Removable Carpet Insert
Included Options
- Gooseneck/5th Wheel Prep Package$545
- Body Color Wheel Arch Moldings$995
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 Services capable
- 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
- 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: 13.4"
- Smart device integration
- 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
- Basic warranty: 36 months/36,000miles
- Corrosion perforation warranty: 72 months/100,000miles
- Diesel engine warranty: 60 months/100,000miles
- Maintenance warranty: 12 months/ unlimited distance
- 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): 284mm (11.2")
- 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: 3,753kg (8,274lbs)
- 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: 2,053mm (80.8")
- 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")
- GVWR: 5,488kg (12,100lbs)
- Payload: 1,715kg (3,782lbs)
- 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")
- Towing capacity: 9,072kg (20,000lbs)
- Turning radius: 8.0m (26.3')
- Wheelbase: 4,039mm (159.0")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: warning
- Compass
- Configurable
- 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: warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: 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: mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: warning
- Security system
- Traction control
Standard Features
- 220 Amp Alternator
- Premium Rear Floor Liners with Removable Carpet Insert
- 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
- 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
- HD Surround Vision
- Bed View Camera with Two Trailer Camera Provisions
- Spray-on Pickup Bedliner with GMC Logo
- Trailer Camera Provisions
- 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 Vader Chrome
- Steering Wheel Audio Controls
- LED Smoked Amber Roof Marker Lamps
- Manual Tilt-Wheel/Telescoping Steering Column
- LED Cargo Area Lighting
- Power Sunroof
- Unauthorized Entry Theft-Deterrent System
- Universal Home Remote
- Power Sliding Rear Window with Defogger
- Power Front Windows with Passenger Express Up/Down
- Wireless Charging
- Ultrasonic Front and Rear Park Assist
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- X31 Off-Road Package
- ProGrade Trailering System
- 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
- Black GMC Emblems
- Black Sierra Nameplates
- Hitch Guidance with Hitch View
- in-Vehicle Trailering App
- Hill Descent Control
- Off-Road Suspension
- Auto-Dimming Inside Rearview Mirror with Camera
- Multicolor 15" Diagonal Head-Up Display
- GMC Premium 13.4" Diagonal Information Display
Dealer Notes
- MSRP
- $103,370
- Doc and CVR Fee
- Please Call
- Everyone Price
- $93,409
- GM Employee Price
- Please Call
- We're here to help: (877) 484-2975
- We're here to help: (877) 484-2975