Swanson GMC · Acton, MA

2026 GMC Sierra 2500 HD Denali Ultimate

7 miles · truck

1 / 44 photos

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 2500 HD

TrimDenali Ultimate

VIN1GT4UXEY3TF244997

Stock numberP8168

Mileage7 miles

BodyPickup

Engine6.6L V8 turbo

Cylinders8

Displacement6.6L

TransmissionAutomatic

Drivetrain4WD

FuelDiesel

ExteriorOnyx Black

InteriorAlpine Umber, Full Grain Leather seat trim

Doors4

Vehicle description

Meet the 2026 GMC Sierra 2500HD Denali Ultimate, a premium heavy-duty truck engineered for those who demand capability, refinement, and performance in one vehicle. - Duramax 6.6L V8 Turbodiesel with 10-Speed Automatic transmission and 4WD - Snow Plow Prep/Camper Package with 220-amp alternator and skid plates - Technology Package and X31 Off-Road Package - Bose Premium Series 12-Speaker System with SiriusXM 360L Trial Subscription - Premium GMC Infotainment System with Apple CarPlay and Android Auto - Multicolor 15 Diagonal Head-Up Display - HD Surround Vision with Bed View Camera and trailer camera provisions - Wireless Phone Projection and Wireless Charging - 16-Way Power Driver and Passenger Seats with lumbar support and heating - Heated and ventilated front seats with heated rear outboard seats - Power moonroof - 20 Ultra-Bright Machined Aluminum alloy wheels - Trailer Tire Pressure Monitor Sensors and in-vehicle Trailering System App - Hill Descent Control and Off-Road Suspension with 2-Speed Active Transfer Case - Lane Departure Warning, Forward Collision Alert, and Automatic Emergency Braking This Denali Ultimate arrives finished in sophisticated Black, presenting the commanding presence this truck deserves. The Snow Plow Prep and Camper Package delivers the infrastructure for serious work, with the 220-amp alternator, reinforced front GAWR, and protective skid plates ensuring durability in demanding conditions. The X31 Off-Road Package combines with the advanced off-road suspension and Hill Descent Control to provide genuine capability beyond the pavement. Inside, the Denali Ultimate prioritizes your comfort and connectivity. The full grain leather appointments, combined with the 16-way power seats offering lumbar support and multiple heating and cooling functions, ensure long drives remain refined. The Bose audio system, dual-zone climate control, and power moonroof create an environment worthy of the premium truck you're driving. Technology integration sets this Sierra apart. The Premium GMC Infotainment System seamlessly incorporates Apple CarPlay and Android Auto, while the Head-Up Display delivers critical information directly to your line of sight. Wireless phone projection and charging reduce clutter, and the suite of camera systems including HD Surround Vision and trailer camera provisions transforms trailering into a precise, manageable task. Safety and driver assistance features work actively to protect you and your passengers. Forward Collision Alert, Automatic Emergency Braking, Lane Departure Warning, and the comprehensive airbag system provide multi-layered protection. Ultrasonic front and rear park assist, Rear Cross Traffic Alert, and Trailer Side Blind Zone Alert deliver visibility in situations where traditional mirrors fall short. The Duramax turbodiesel engine paired with the 10-speed automatic transmission represents the pinnacle of heavy-duty performance and efficiency. This combination delivers the torque and towing capability required for serious work while maintaining refined on-road manners. The 3.42 axle ratio and 2-speed active transfer case provide the flexibility to handle everything from highway miles to challenging terrain. This 2026 GMC Sierra 2500HD Denali Ultimate represents a substantial investment in capability, comfort, and reliability. Every system has been thoughtfully integrated to serve owners who refuse to compromise. We invite you to examine this truck and experience the commanding presence and purposeful engineering that define the Sierra 2500HD platform. Price includes: $2000 - Bonus Cash. Exp. 11/30/2026

Features & options (142)

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 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 carpeted floor mats
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
Rear Camera Mirror
Rear Seat Reminder
Rear air vents
Rear carpeted floor mats
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
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

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 50 miles of Acton, Massachusetts

Asking price$89,135Dealer asking price · 7 mi

Market value$94,023Market value · based on 28 comparable cars

vs. market Good deal-5.2%Good deal · based on 28 comparable cars

Where this price sits

Among the lowest-priced · 96% of 28 similar listings ask more than this car.

Market value $94,023

This car$89,135

$88,640lowest$102,115highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Good deal$4,888 below the market value of $94,023

Price range

$88,640$102,115

2nd lowest price of 29 similar listings within 50 milesTick marks the market value · range of 28 similar listings

AutosXchange Insights

Compared with 28 new 2026 GMC Sierra 2500 Denali Ultimate listings within 50 mi.
Priced $4,888 below the market value of 28 comparable cars.
2nd lowest price of 29 similar listings within 50 miles.
About 7 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # P8168 — 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 7, 2026. No price change at this dealership since Nov 7 ($89,135).0 price changes at this dealership: $89,135 → $89,135.

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

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 11); 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 50 miles of Acton, Massachusetts. Showing the 12 nearest of 28 comparable cars for sale, nearest first.

2026 GMC Sierra 2500 HD Denali Ultimate for sale at Swanson GMC in Acton, MA

Good deal

44 photos