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O'Neil GMC · Warminster, PA

2026 GMC Sierra 3500 HD Denali Ultimate DRW

6,383 miles · truck · Price dropped $1,540

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026
MakeGMC
ModelSierra 3500 HD
TrimDenali Ultimate DRW
Stock numberT798A
Mileage6,383 miles
BodyPickup
Engine6.6L V8 turbo
Cylinders8
Displacement6.6L
TransmissionAutomatic
Drivetrain4WD
FuelDiesel
ExteriorSummit White
InteriorAlpine Umber, Full Grain Leather Seating Surfaces
Towing20000

Vehicle description

This 2026 GMC Sierra 3500HD Denali Ultimate in Summit White features: Duramax 6.6L V8 Turbodiesel 10-Speed Automatic 4WD CARFAX One-Owner. Clean CARFAX. Certified.Odometer is 2598 miles below market average!Our model lineup is second to none! Make sure you swing in today to get an incredible deal on many new and used Buick and GMC models. These vehicles come packed full of features including a one-of-a-kind navigation system that will get you to any location efficiently and safely. Have kids and want to keep them entertained? Our Rear Seat DVD equipped vehicles will have them settled in for those long trips. The average family is getting larger and larger so make sure to check out our vehicles with the extra space with third row seating that can fit kids, dogs, adults, and more! Of course, when it gets chilly in those winter months, features like climate control and heated leather seating are exactly what your body needs for an early morning trip into work. Check out all of these features and more in our stock of vehicles. Other features include but are not limited to Power Moonroof, New Battery, New Tires, Non-Smoker Interior, Paddle Shifters, One Owner Carfax Certified, Premium Wheels, 30+ MPG, Premium Cloth Seating, New Brakes, Premium Sound System, Rear Bucket Seats, Remainder of Factory Warranty, Rear Back-Up Sensors, Remote Keyless Entry, Service Records Available, Steering Wheel Controls, Remote Start, Tow Package, Traction Control, XM Radio, USB Ports, and much more! Price excludes tax, tags, title, license, and dealer fees, additional rebates may apply. See our specials for more details.

Features & options (29)

  • Adaptive Cruise Control
  • Bluetooth®
  • Heated Steering Wheel
  • Remote Start
  • 4WD/AWD
  • Android Auto
  • Apple CarPlay
  • Leather Seats
  • Wi-Fi Hotspot
  • Emergency Brake Assist
  • Lane Departure Warning
  • Sunroof/Moonroof
  • Wireless Phone Charging
  • Blind Spot Monitor
  • Forward Collision Warning
  • Navigation System
  • Parking Assistance
  • Rear View Camera
  • Tow Hitch/Tow Package
  • Automatic Climate Control
  • Entertainment System
  • Turbo Charged Engine
  • DriveType: Four Wheel Drive
  • Fuel System: Direct Injection
  • Fuel Tank Capacity: 36 gal
  • Fuel Type: Diesel Fuel
  • Horse Power: 470
  • Rear Wheel: Dual
  • Trailering Capacity: 20000 lbs

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 Warminster, Pennsylvania
Asking price$90,345Dealer asking price · 6,383 mi
Market value$91,594Market value · based on 5 comparable cars
vs. market Fair price-1.4%Fair price · based on 5 comparable cars

Where this price sits

In the typical middle range · 60% of 5 similar listings ask more than this car.

$76,490lowest$92,297highest
Middle 50% of asking pricesMarket valueThis car

Price vs. market value

-1.4%
−25%Market value+25%
Fair price$1,249 below the market value of $91,594

Price range

$90,345
$76,490$92,297
3rd lowest price of 6 similar listings within 50 milesTick marks the market value · range of 5 similar listings

AutosXchange Insights

  • Compared with 5 used 2025–2026 GMC Sierra 3500 Denali Ultimate listings within 50 mi.
  • Priced $1,249 below the market value of 5 comparable cars.
  • 3rd lowest price of 6 similar listings within 50 miles.
  • Has about 1,000 more miles than similar listings.
  • About 6,383 miles per year of age (U.S. average is roughly 12,000–14,000).
  • Stock # T798A — 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 5, 2026. 1 price change at this dealership: $91,885 → $90,345 (−$1,540).

$90.0k$90.5k$91.0k$91.5k$92.0k$92.5kNov 5Nov 7Nov 8Nov 10Nov 11Nov 13−$1,540 Nov 12

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

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 13); 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 2025–2026 Sierra 3500 Denali Ultimate · used · any miles · within 50 miles of Warminster, Pennsylvania. All 5 comparable cars for sale, nearest first.

More GMC Sierra 3500 near Warminster

All years and trims. Nearest first.