Brennan Buick GMC · Plattsburgh, NY

2026 GMC Sierra 1500 AT4

1 miles · truck

1 / 35 photos

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 1500

TrimAT4

VIN1GTUUEE86TZ494818

Stock number260376

Mileage1 miles

BodyPickup

Engine3.0L 6-cyl turbo

Displacement3.0L

Horsepower305

TransmissionAutomatic

Drivetrain4WD

FuelDiesel

MPG21 city / 24 hwy

ExteriorOnyx Black

InteriorJet Black with Kalahari accents, Perforated leathe

Doors4

Towing8800

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. This 2026 GMC Sierra 1500 AT4 in Black combines rugged capability with refined comfort. Powered by a 3.0L I6 engine with 10-speed automatic transmission and 4WD, this truck delivers strong performance and efficiency at 21 city and 24 highway mpg. Built for those who demand both on-road refinement and off-road readiness, the AT4 trim brings premium features and purposeful engineering. The Sierra 1500 AT4 is equipped with: - Power Sunroof - Premium Bose 7-Speaker Sound System with SiriusXM - Apple CarPlay/Android Auto with Wireless Connectivity - Heated and Ventilated Front Leather Seats - 10-Way Power Driver Seat with Lumbar Support - Automatic Emergency Braking and Lane Keep Assist - Ultrasonic Front and Rear Park Assist - Trailering Package with Integrated Trailer Brake Controller - LT265/60R20 Blackwall Goodyear Wrangler Territory Tires - Engine Block Heater for Cold Weather Reliability Experience the truck that balances capability with comfort at our GMC showroom. This Sierra 1500 AT4 is ready to tackle your day, whether on pavement or trail. Price includes: $3950 - Supplier Discount for Everyone. Exp. 11/30/2026 $6357 - GMC Black Friday Offer. Exp. 11/30/2026

Features & options (134)

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 Sound System
SiriusXM with 360L Trial Subscription
Steering-wheel mounted controls
Wi-Fi Hotspot capable
Wireless Apple CarPlay/Wireless Android Auto capability for compatible phones
17" 265/70R17SL all-season, blackwall spare tire
17" full-size spare steel wheel with Black finish
20" LT265/60R20 MT Goodyear Wrangler Territory blackwall tires
20" machined aluminum wheels with Carbon Grey Metallic accents
Black mirror caps
Body-color door handles
Body-color front bumper
Body-color rear bumper
Cab-mounted cargo area lamps
Cargo bed LED lighting
CornerStep rear bumper
Deep-tinted glass
Front license plate bracket
GMC MultiPro Tailgate
Heated, power, driver-side auto-dimming, power-folding outside mirrors
IntelliBeam
LED fog lamps
LED projectors with Fade-on/ Fade-off animation, LED turn signals and Daytime Running Lamps
Off-Road High Clearance Steps
Perimeter Lighting
Power sliding rear window with rear defogger
Power sunroof
Rainsense automatic wipers
Rear wheelhouse liners
Spare tire carrier lock
Spray-on bedliner
Tailgate and bed rail protection caps
Tailgate with EZ Lift assist, power lock & release
10-way power driver seat with power lumbar
10-way power front passenger seat
12.3" diagonal color Driver Information Center
120-volt box-mounted power outlet
120-volt power outlet
13.4" diagonal multicolor reconfigurable Infotainment screen
Adaptive Cruise Control
Assist handles
Carpeted floor covering
Compass
Driver memory
Dual-zone automatic climate control
Front bucket seats
Front center console
Heated driver and front outboard passenger seats
Heated rear outboard seats
Heated steering wheel
In-Vehicle Trailering App
Inside rearview auto-dimming mirror
Keyless Open and Start
Outside temperature display
Power door locks
Power tilt and telescoping steering column
Power windows
Power windows with rear express-down
Premium front floor liners with removable carpet insert
Premium rear floor liners with removable carpet insert
Rear air vents
Rear window defogger
Remote Start
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
Wrapped steering wheel
10-speed automatic transmission with Electronic Precision shift and front bucket seats
2-speed Autotrac Transfer Case
220-amp alternator
3.0L Duramax Turbo Diesel engine
3.23 rear axle ratio
4-wheel antilock disc brakes
7,200 lbs. GVWR
Aluminized stainless-steel muffler and tailpipe
Automatic Stop/Start
Automatic locking rear differential
Brake pad wear indicator
Capless fuel fill
Cargo tie-downs (12)
Dual-outlet exhaust
Electric Power Steering
Engine block heater
Fully boxed frame
Heavy-duty 850 cold-cranking amps battery
Hill Descent Control
Integrated trailer brake controller
Off-Road, 2-inch factory-installed lift
Red vertical recovery hooks
Skid plates
LED Daytime Running Lamps
6 airbags
Automatic Emergency Braking
Buckle to Drive
Following Distance Indicator
Forward Collision Alert
Front and Rear Park Assist
HD Surround Vision
Hitch Guidance
Hitch View
Inside/Rear Trailer Camera Input
Lane Keep Assist with Lane Departure Warning
OnStar Basics
OnStar services capable
Rear Cross Traffic Braking
Rear Pedestrian Alert
Rear Seat Belt Indicator
Rear Seat Reminder
Safety Alert Seat
Seat Belt Adjustable Guide Loops
Tire Pressure Monitoring System with Tire Fill Alert
Trailer Side Blind Zone Alert
Front Pedestrian Braking
StabiliTrak, electronic stability control system with traction control
AT4 Preferred Package:
Rear sliding power window
AT4 Premium Package:
AT4 Preferred Package
AT4 Premium Package
Off-Road High Clearance steps

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 Plattsburgh, New York

Asking price$63,493Dealer asking price · 1 mi

Market value$66,447Market value · based on 13 comparable cars

vs. market Fair price-4.4%Fair price · based on 13 comparable cars

Where this price sits

Among the lowest-priced · 85% of 13 similar listings ask more than this car.

Market value $66,447

This car$63,493

$62,524lowest$68,239highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Fair price$2,954 below the market value of $66,447

Price range

$62,524$68,239

3rd lowest price of 14 similar listings within 50 milesTick marks the market value · range of 13 similar listings

AutosXchange Insights

Compared with 13 new 2026 GMC Sierra 1500 AT4 listings within 50 mi.
Priced $2,954 below the market value of 13 comparable cars.
3rd lowest price of 14 similar listings within 50 miles.
About 1 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # 260376 — 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 ($63,493).

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 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 2026 Sierra 1500 AT4 · new · within 50 miles of Plattsburgh, New York. Showing the 12 nearest of 13 comparable cars for sale, nearest first.

2026 GMC Sierra 1500 AT4 for sale at Brennan Buick GMC in Plattsburgh, NY

Fair priceNew listing

23 photos