Legacy GMC · Slidell, LA

2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4X

8 miles · truck

1 / 26 photos

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 2500 HD

Trim4-Wheel AT4X

VIN1GT4UZEY2TF389959

Stock number26G2599

Mileage8 miles

BodyPickup

Engine6.6L V8 turbo

Cylinders8

Displacement6.6L

TransmissionAutomatic

Drivetrain4WD

FuelDiesel

ExteriorSummit White

InteriorObsidian Rush, Full Grain Leather Seat Trim

Towing18500

Vehicle description

This 2026 GMC Sierra 2500HD AT4X is proudly offered by Legacy Buick GMC This GMC includes: GOOSENECK / 5TH WHEEL PREP PACKAGE GVWR, 11,350 LBS ALTERNATORS, DUAL, 220-AMPS PRIMARY, 170-AMPS AUXILIARY TRANSMISSION, 10-SPEED AUTOMATIC A/T 10-Speed A/T LPO, HARD FOLDING TRUCK BED COVER BY REALTRUCK ADVANTAGE Pickup Bed Tonneau Cover ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE Diesel Fuel 8 Cylinder Engine Turbocharged *Note - For third party subscriptions or services, please contact the dealer for more information.* There's a level of quality and refinement in this GMC Sierra 2500HD AT4X that you won't find in your average vehicle. Take home this GMC Sierra 2500HD AT4X, and you will have the power of 4WD. It's a great feature when you need to drive over tricky terrain or through inclement weather. This is about the time when you're saying it is too good to be true, and let us be the one's to tell you, it is absolutely true. Dealer Disclosure: Prices do not include state and local tax, title, license, notarial fees, convenience fees, documentary fees, and any finance charges. All prices, specifications and availability subject to change without notice. Contact dealer for most current information .Not available with special finance, lease and some other offers.

Features & options (250)

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
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
13.4" diagonal GMC Premium Infotainment System with Google built-in
Bluetooth® streaming audio for music and select phones
Wireless Apple CarPlay capability for compatible phones
Wireless Android Auto capability for compatible phones
Customize and manage entertainment and vehicle feature setting
Voice-activated technology for phone
SiriusXM Trial Subscription
Place and receive hands-free phone calls
MultiPro Audio System by Kicker
Bluetooth® compatibility for wireless playback
3.5mm and USB inputs for audio playbacks
A custom ABS baffle with full gasket sealing
A weatherproof amplifier hidden in the tailgate
SiriusXM with 360L Trial Subscription
Wireless phone projection
For Apple CarPlay and Android Auto
Wi-Fi Hotspot capable
May require additional optional equipment
IntelliBeam
GMC MultiPro Tailgate
Hitch area lighting
Power lock and release
Spray-on bedliner
Includes GMC logo on all trims except PRO
CornerStep rear bumper
Located at each end of the rear bumper
Textured step pads to help provide secure footing
18" LT305/70R18 MT tires
Cab-mounted cargo area lamps
Activated by switch located on center switch bank
Illuminates the cargo bed area
Rainsense automatic wipers
Black power-retractable assist steps with LED perimeter lighting
Textured step pads help provide secure footing
Retracts when not in use
Deploy Running Board mode for car wash cleaning
LED perimeter lighting
Deep-tinted glass
Provides added protection from sun and glare
LED fog lamps
Black beltline moldings
Tailgate with EZ Lift assist, power lock & release
Body-color door handles
Body-color front bumper
Cargo bed LED lighting
Provides light to find cargo in the bed
Cargo tie-downs
12-fixed rated at 500 lbs. per corner
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Side Bed Step
Black textured step pads help provide secure footing
Body-color rear bumper
With integrated CornerSteps
Smoked Amber LED roof marker lamps
Roof-mounted lamps near the front of the cab
Spare tire carrier lock
Helps keep spare tire secure
Tailgate and bed rail protection caps
Outside power-adjustable vertical trailering mirrors with power folding/extending auto-dimming driver and passenger upper glass
Chrome mirror caps
AT4 and AT4X features high gloss Black mirror caps
Power folding/extending
Lower convex mirrors
Heated upper glass
Integrated turn signal indicators
Puddle lamps
Perimeter lighting
Auxiliary lighting
Extends 3.31-inches
Rear wheelhouse liners
18" LT305/70R18 MT spare tire
Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
LED taillamps with LED stop lights and animation
Power sunroof
Retracts into the roof
Offers tilt and slide features with express-open and -close
Grille (Gloss Black header and grille insert bars with Dark Nickel inserts.)
High gloss Black mirror caps
18" machined aluminum wheel with High Gloss Black accents
Winter Grille Cover
Summit White
Hard Folding Truck Bed Cover by RealTruck Advantage
Keyless Open and Start
Lockout protection helps you avoid locking keys in the vehicle
Head-Up Display
Multi-color 15" diagonal Head-Up Display
Adjustable vertical position and brightness of the display
Steering-wheel mounted controls
Leather-wrapped steering wheel
Soft, supple leather trim adds comfort to your drive
Power windows with driver express-up/down
Ventilated driver and front passenger seats
Individually controlled
Cooling feature includes both seatbacks and cushions
Manual tilt and telescoping steering column
Assist handles
Front A-pillar mounted for Driver and Passenger
Rear B-pillar mounted
Premium rear floor liners with removable carpet insert
Rear window defogger
Up-level rear seat with storage package
60/40 Full-length folding bench seat
Seatback storage on left and right side
Center fold out armrest with 2 cupholders
Underseat storage (full cab width)
Seat trim, Full Grain Leather
Compass
Located in instrument cluster
Power door locks
Outside temperature display
Located in infotainment display
12.3" diagonal color Driver Information Center
High definition display provides crisp, premium appearance
Dual-zone automatic climate control
Allows individual climate settings for both driver and front passenger
120-volt box-mounted power outlet
3-prong auxiliary household-style outlet
Located in the pickup bed
Power windows with driver and front passenger express-up/down
If obstruction is detected, the anti-pinch feature will auto-reverse
Power sliding rear window with rear defogger
Premium front floor liners with removable carpet insert
Wireless Charging
Uses induction technology for select portable electronic devices
Convenient charging location
Front bucket seats
Power windows with rear express-down
USB ports
(2) First row, located on console
Rear Seat Reminder
16-way power passenger seat with power lumbar and massage
Front center console
Universal Home Remote
3-channel programmable
16-way power driver seat with power lumbar and massage
Heated rear outboard seats
Passengers can manage heat settings with their own controls
Theft-deterrent unauthorized entry system
Helps deter unauthorized entry, helping to protect your vehicle
Heated driver and front outboard passenger seats
Rear air vents
Provides cabin comfort for rear occupants
(2) Data/charge ports located inside center console
(2) Charge ports located on rear of console
Driver memory
You can always override the feature and take control
120-volt power outlet
Located on the instrument panel
Carpeted floor covering
Color-keyed to match the interior
Rear Camera Mirror
The feature also allows brightness, vertical tilt and zoom adjustments
Obsidian Rush, Full Grain Leather seat trim
Autotrac 2-speed transfer case with push button controls
4-button control 2WD, Auto, 4WD, 4WD LO
2WD High for most on-road and highway situations
Automatically engages 4WD until traction is regained
4-wheel antilock disc brakes
Red vertical recovery hooks
Two front frame-mounted
In-Vehicle Trailering App
Checklist
Trailer maintenance reminders
Trailer security alerts
Trailer mileage
Tow/haul reminder
Trailer electrical diagnostics
Skid Plates, front aluminum
Integrated trailer brake controller
Integrated with the antilock brake system (ABS)
Brake pad wear indicator
Four wheel drive
Fully boxed frame
Hydroformed front section
High-strength steel
Skid Plates, Transfer case, steel
Driver-selectable e-locking rear differential
When activated, locks both rear wheels in unison
Increase traction in off-road situations
Off-Road suspension with 1.5" factory installed lift and Multimatic DSSV dampers
Front suspension kit composed of: Control Arms, Ball Joints, Knuckles
Digital Variable Steering Assist
Heavy-Duty Air Filter
Dual, 220 amp primary and 170 auxiliary amp alternators
Heavy-duty dual batteries with 1460 cold-cranking amps
70 Amp-hr
Maintenance-free with rundown protection and retained accessory power
11,350 lbs. GVWR
Emissions, Federal requirements
Gooseneck / 5th Wheel Prep Package
Hitch platform to accept Gooseneck or 5th wheel hitch
Box mounted 7-pin trailer harness
AT4X Preferred Equipment Group includes standard equipment
Signature LED Daytime Running Lamps
LED Daytime Running Lamps
OnStar services capable
Following Distance Indicator
Designed to help you maintain a safe following distance
Rear Cross Traffic Alert
6 airbags
Dual-stage frontal airbags for driver and front outboard passenger
Head-curtain airbags for outboard seating positions
Teen Driver
Front and Rear Park Assist
These can help you park and avoid collisions
Rear Seat Belt Indicator
Trailer Tire Pressure and Temperature Sensors
Set of 4 sensors
Additional or replacement sensors are available as GM Accessory
System is capable of monitoring up to 6 wheels
Tire Pressure Monitoring System with Tire Fill Alert
Trailer Side Blind Zone Alert
Hitch View
Shows a close-up view of the trailer hitch
Hitch Guidance
Can help you line up the hitch to your trailer
Trailering Information Label
HD Surround Vision
Can help you park or avoid vehicles and objects
Safety Alert Seat
You can also switch to beeping crash avoidance alerts
OnStar Basics
Drive confidently with core OnStar services including
Remote commands
Built-in voice assistance
Real-time traffic and navigation
Automatic Crash Response to help if you're in need
Trailering camera provisions
Includes connector for accessory wiring harness

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

AutosXchange Intel

Vehicle price analysis

Live listings · nationwide

Asking price$90,255Dealer asking price · 8 mi

Market value$87,788Market value · based on 34 comparable cars

vs. market Fair price+2.8%Fair price · based on 34 comparable cars

Where this price sits

Among the highest-priced · 21% of 34 similar listings ask more than this car.

Market value $87,788

This car$90,255

$79,529lowest$91,049highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Fair price$2,467 above the market value of $87,788

Price range

$79,529$91,049

27th lowest price of 35 similar listings nationwideTick marks the market value · range of 34 similar listings

AutosXchange Insights

Compared with 34 new 2026 GMC Sierra 2500 4-Wheel AT4X listings nationwide.
Priced $2,467 above the market value of 34 comparable cars — compare options, condition and history.
27th lowest price of 35 similar listings nationwide.
About 8 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # 26G2599 — 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 6, 2026. No price change at this dealership since Nov 6 ($90,255).

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

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 12); 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 4-Wheel AT4X · new · nationwide. Showing the 12 nearest of 34 comparable cars for sale, nearest first.

2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4X 4-Wheel AT4X for sale at Legacy GMC in Slidell, LA

Fair price

30 photos