Brennan Buick GMC · Plattsburgh, NY

2026 GMC Sierra 2500 HD Denali Ultimate

1 miles · truck

1 / 51 photos

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 2500 HD

TrimDenali Ultimate

VIN1GT4UXEY9TF268740

Stock number260176

Mileage1 miles

BodyPickup

Engine6.6L V8 turbo

Cylinders8

Displacement6.6L

Horsepower470

TransmissionAutomatic

Drivetrain4WD

FuelDiesel

ExteriorOnyx Black

InteriorAlpine Umber, Full Grain Leather seat trim

Doors4

Towing18500

Vehicle description

At Brennan Buick GMC, we're here for you throughout the life of your vehicle. If you're in the market for a new or used truck, SUV, or car, visit our dealership to see the best that Brennan Buick GMC has to offer. - Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic and 4WD - Gooseneck/5th Wheel Prep Package - Snow Plow Prep/Camper Package - 220-Amp Alternator - Bose Premium Series 12-Speaker System with SiriusXM 360L - Multicolor 15 Diagonal Head-Up Display - HD Surround Vision with Bed View Camera and Trailer Camera Provisions - Heated and Ventilated Leather Front Seats with 16-Way Power Adjustment - Heated Rear Seats - Power Sunroof - Wireless Charging and Apple CarPlay/Android Auto - Ultrasonic Front and Rear Park Assist with Trailer Side Blind Zone Alert - Hill Descent Control with Off-Road Suspension - 20 Ultra-Bright Machined Aluminum Wheels - Signature Denali Ultimate Grille in Vadar Chrome This 2026 GMC Sierra 2500HD Denali Ultimate is engineered for serious work and premium comfort. The Duramax 6.6L V8 Turbodiesel paired with the 10-Speed Automatic transmission delivers the capability you need, while the 4WD system with two-speed active transfer case handles diverse terrain and conditions. The truck is equipped with both Gooseneck/5th Wheel Prep and Snow Plow Prep packages, making it ready for specialized hauling and winter operations from day one. Inside the cab, you'll find a truck built for long hours. Full grain leather seats with heating and ventilation in the front rows keep you comfortable on every drive. The 16-way power driver and passenger seat adjusters with lumbar support ensure you find your ideal seating position. The power sunroof adds an openness to the interior, while the genuine wood dashboard and door panel inserts provide upscale touches that set the Denali Ultimate apart. Technology is seamlessly integrated throughout. The Bose Premium Series 12-Speaker System with SiriusXM 360L subscription delivers exceptional audio quality. Apple CarPlay and Android Auto connectivity keep you linked to your devices, while wireless charging eliminates the need for cables. The multicolor 15-inch head-up display projects critical information directly into your line of sight, reducing distractions on the road. Safety and convenience features reflect the truck's premium positioning. The HD Surround Vision system, bed view camera with trailer camera provisions, and ultrasonic park assist help you maneuver with confidence. Automatic emergency braking, lane departure warning, and rear cross traffic alert provide additional layers of protection. Trailer side blind zone alert, trailer tire pressure monitoring, and hitch guidance with hitch view make towing operations safer and more manageable. The exterior showcases Denali Ultimate design excellence. The signature Denali grille finished in Vadar Chrome commands attention, while the 20-inch ultra-bright machined aluminum wheels enhance the truck's stance. The spray-on pickup bedliner with GMC logo protects your cargo area and adds functionality. LED smoked amber roof marker lamps and auto-dimming headlights with IntelliBeam technology complete the sophisticated appearance. This Sierra 2500HD Denali Ultimate represents the pinnacle of heavy-duty truck capability combined with Denali luxury refinement. Whether you're managing demanding work applications or simply want the finest heavy-duty truck available, this vehicle delivers on every front. We invite you to visit our showroom and experience this truck firsthand. Price includes: $2000 - Bonus Cash. Exp. 11/30/2026

Features & options (149)

Basic
Corrosion
Maintenance
Roadside Assistance
Max seating capacity
Fuel System
Fuel tank capacity
Horsepower
Towing capacity
13.4" diagonal GMC Premium Infotainment System with Google built-in
Bluetooth
Bose Premium Series with 12-speaker system with CenterPoint
MultiPro Audio System by Kicker
SiriusXM with 360L Trial Subscription
Wi-Fi Hotspot capable
Wireless phone projection
18" LT275/70R18 all-terrain, blackwall spare tire
20" LT275/65R20 all-terrain, blackwall tires
20" Ultra Bright machined aluminum wheels with gloss Black inserts
Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Body color wheel arch moldings
Body-color front bumper
Body-color rear bumper
Cab-mounted cargo area lamps
Cargo bed LED lighting
Cargo tie-downs
Chrome beltline moldings
Chrome door handles
Chrome mirror caps
CornerStep rear bumper
Deep-tinted glass
Front license plate bracket
GMC MultiPro Tailgate
IntelliBeam
LED fog lamps
Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass
Power sunroof
Power-retractable assist steps with LED perimeter lighting
Rainsense automatic wipers
Rear wheelhouse liners
Side Bed Step
Smoked Amber LED roof marker lamps
Spare tire carrier lock
Spray-on bedliner
Tailgate and bed rail protection caps
Tailgate with EZ Lift assist, power lock & release
Winter Grille Cover
12.3" diagonal color Driver Information Center
120-volt box-mounted power outlet
120-volt power outlet
16-way power driver seat with power lumbar and massage
16-way power passenger seat with power lumbar and massage
Adaptive Cruise Control
Assist handles
Carpeted floor covering
Compass
Driver memory
Dual-zone automatic climate control
Front bucket seats
Front center console
Head-Up Display
Heated driver and front outboard passenger seats
Heated rear outboard seats
Heated steering wheel
Keyless Open and Start
Leather-wrapped steering wheel
Manual tilt and telescoping steering column
Outside temperature display
Power door locks
Power sliding rear window with rear defogger
Power windows with driver and front passenger express-up/down
Power windows with driver express-up/down
Power windows with rear express-down
Premium front floor liners with removable carpet insert
Premium rear floor liners with removable carpet insert
Rear Camera Mirror
Rear Seat Reminder
Rear air vents
Rear window defogger
Remote Start
Steering-wheel mounted controls
Theft-deterrent unauthorized entry system
USB ports
Universal Home Remote
Up-level rear seat with storage package
Ventilated driver and front passenger seats
Wireless Charging
10-speed automatic transmission
11,350 lbs. GVWR
220-amp alternator
3.42 rear axle ratio
4-wheel antilock disc brakes
6.6L Duramax Turbo-Diesel V8 engine
Air filtration monitoring
Automatic locking rear differential
Autotrac 2-speed transfer case with push button controls
Brake pad wear indicator
Capped fuel fill
Chrome vertical recovery hooks
Diesel exhaust brake
Digital Variable Steering Assist
Engine block heater
External auxiliary transmission oil cooler
External engine oil cooler
Fully boxed frame
Gooseneck / 5th Wheel Prep Package
Heavy-Duty Air Filter
Heavy-duty dual batteries with 1460 cold-cranking amps
Hill Descent Control
In-Vehicle Trailering App
Integrated trailer brake controller
Off-Road suspension
Push Button Start
Skid plates
3 Years OnStar One
LED Daytime Running Lamps
Signature LED Daytime Running Lamps
6 airbags
Bed View Camera
Buckle to Drive
Following Distance Indicator
Forward Collision Alert
Front and Rear Park Assist
HD Surround Vision
Hitch Guidance
Hitch View
Lane Departure Warning
OnStar Basics
OnStar services capable
Rear Cross Traffic Alert
Rear Seat Belt Indicator
Safety Alert Seat
Seat Belt Adjustable Guide Loops
Teen Driver
Tire Pressure Monitoring System with Tire Fill Alert
Trailer Side Blind Zone Alert
Trailer Tire Pressure and Temperature Sensors
Trailering Information Label
Trailering camera provisions
Automatic Emergency Braking
Front Pedestrian Braking
StabiliTrak, electronic stability control system with traction control
Snow Plow Prep / Camper Package:
Power feed to accommodate a backup and roof emergency light
A single 220-amp alternator
Heavy-duty front springs
May require additional optional equipment
Snow Plow Prep / Camper Package

Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.

AutosXchange Intel

Vehicle price analysis

Live listings · within 250 miles of Plattsburgh, New York

Asking price$91,485Dealer asking price · 1 mi

Market value$94,000Market value · based on 55 comparable cars

vs. market Fair price-2.7%Fair price · based on 55 comparable cars

Where this price sits

Among the lowest-priced · 82% of 55 similar listings ask more than this car.

Market value $94,000

This car$91,485

$88,640lowest$102,115highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Fair price$2,515 below the market value of $94,000

Price range

$88,640$102,115

11th lowest price of 56 similar listings within 250 milesTick marks the market value · range of 55 similar listings

AutosXchange Insights

Compared with 55 new 2026 GMC Sierra 2500 Denali Ultimate listings within 250 mi.
Priced $2,515 below the market value of 55 comparable cars.
11th lowest price of 56 similar listings within 250 miles.
About 1 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # 260176 — mention it when you call or text.

How we calculate market value: comparable cars for sale now plus their last listed prices.

Price history

Price tracked by AutosXchange since Nov 9, 2026. No price change at this dealership since Nov 9 ($91,485).

AutosXchange Intel Hub: Price changes for this model in New York · This model in the Intel Hub · Market movers in New York

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 14); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.

Cars this price is compared to

Same 2026 Sierra 2500 Denali Ultimate · new · within 250 miles of Plattsburgh, New York. Showing the 12 nearest of 55 comparable cars for sale, nearest first.

2026 GMC Sierra 2500 HD Denali Ultimate for sale at Brennan Buick GMC in Plattsburgh, NY

Fair price

48 photos