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Legacy GMC · Slidell, LA

2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4

12 miles · truck

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026
MakeGMC
ModelSierra 2500 HD
Trim4-Wheel AT4
Stock number26G2298
Mileage12 miles
BodyPickup
Engine6.6L V8 turbo
Cylinders8
Displacement6.6L
TransmissionAutomatic
Drivetrain4WD
FuelDiesel
ExteriorOnyx Black
Towing18500

Vehicle description

This 2026 GMC Sierra 2500HD AT4 is offered to you for sale by Legacy Buick GMC. This GMC includes: GOOSENECK / 5TH WHEEL PREP PACKAGE LPO, HARD FOLDING TRUCK BED COVER BY REALTRUCK ADVANTAGE Pickup Bed Tonneau Cover ALTERNATORS, DUAL, 220-AMPS PRIMARY, 170-AMPS AUXILIARY TRANSMISSION, 10-SPEED AUTOMATIC A/T 10-Speed A/T LPO, 22" Aluminum Wheels ONYX BLACK GVWR, 11,350 LBS ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE Diesel Fuel 8 Cylinder Engine Turbocharged AT4 PREMIUM PLUS PACKAGE Generic Sun/Moonroof Sun/Moonroof Running Boards/Side Steps *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 AT4 that you won't find in your average vehicle. Taking the road less traveled has never been more fun than with this 4WD. With improved performance, mileage and acceleration, this 2026 4WD GMC Sierra 2500HD AT4 is king of the off-road. You could keep looking, but why? You've found the perfect vehicle right here. 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
  • Auto Dimming Mirror
  • 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
  • Premium Sound System
  • Wi-Fi Hotspot capable
  • May require additional optional equipment
  • SiriusXM with 360L Trial Subscription
  • 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
  • Wireless phone projection
  • For Apple CarPlay and Android Auto
  • Place and receive hands-free phone calls
  • SiriusXM Trial Subscription
  • Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
  • Cargo tie-downs
  • 12-fixed rated at 500 lbs. per corner
  • Cargo bed LED lighting
  • Provides light to find cargo in the bed
  • CornerStep rear bumper
  • Located at each end of the rear bumper
  • Textured step pads to help provide secure footing
  • Body-color door handles
  • LED fog lamps
  • Rear wheelhouse liners
  • Deep-tinted glass
  • Provides added protection from sun and glare
  • Body-color rear bumper
  • With integrated CornerSteps
  • Grille (Gloss Black header and grille insert bars with Black Chrome accents.)
  • Spare tire carrier lock
  • Helps keep spare tire secure
  • Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
  • LED taillamps with LED stop lights and animation
  • Tailgate and bed rail protection caps
  • Cab-mounted cargo area lamps
  • Activated by switch located on center switch bank
  • Illuminates the cargo bed area
  • Side Bed Step
  • Black textured step pads help provide secure footing
  • Black beltline moldings
  • High gloss Black mirror caps
  • 18" LT275/70R18 all-terrain, blackwall spare tire
  • GMC MultiPro Tailgate
  • Hitch area lighting
  • Power lock and release
  • Rainsense automatic wipers
  • Spray-on bedliner
  • Includes GMC logo on all trims except PRO
  • Tailgate with EZ Lift assist, power lock & release
  • Body-color front bumper
  • 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
  • IntelliBeam
  • 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
  • 22" LT265/60R22E all-terrain blackwall tires
  • 22" Transit steel, painted Black wheels
  • Winter Grille Cover
  • 22" Gloss Black aluminum wheels
  • Power sunroof
  • Retracts into the roof
  • Offers tilt and slide features with express-open and -close
  • Smoked Amber LED roof marker lamps
  • Roof-mounted lamps near the front of the cab
  • Hard Folding Truck Bed Cover by RealTruck Advantage
  • Onyx Black
  • Heated driver and front outboard passenger seats
  • Individually controlled
  • Rear Seat Reminder
  • Keyless Open and Start
  • Lockout protection helps you avoid locking keys in the vehicle
  • Rear air vents
  • Provides cabin comfort for rear occupants
  • 120-volt box-mounted power outlet
  • 3-prong auxiliary household-style outlet
  • Located in the pickup bed
  • 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)
  • Driver memory
  • Inside rearview auto-dimming mirror
  • USB ports
  • (2) Charge ports located on rear of console
  • Heated rear outboard seats
  • Passengers can manage heat settings with their own controls
  • Power windows with rear express-down
  • 12.3" diagonal color Driver Information Center
  • High definition display provides crisp, premium appearance
  • (2) Data/charge ports located inside center console
  • Dual-zone automatic climate control
  • Allows individual climate settings for both driver and front passenger
  • Outside temperature display
  • Located in infotainment display
  • 120-volt power outlet
  • Located on the instrument panel
  • Power door locks
  • Ventilated driver and front passenger seats
  • Cooling feature includes both seatbacks and cushions
  • Steering-wheel mounted controls
  • Manual tilt and telescoping steering column
  • Rear window defogger
  • Premium rear floor liners with removable carpet insert
  • Carpeted floor covering
  • Color-keyed to match the interior
  • Premium front floor liners with removable carpet insert
  • Seat trim, Perforated front Leather
  • You can always override the feature and take control
  • Front center console
  • Front bucket seats
  • 10-way power front passenger seat
  • Includes 8-way power front passenger seat
  • Includes a 2-way power lumbar control
  • Compass
  • Located in instrument cluster
  • 10-way power driver seat with power lumbar
  • Includes 8-way power driver seat
  • (2) First row, located on console
  • Wrapped steering wheel
  • Theft-deterrent unauthorized entry system
  • Helps deter unauthorized entry, helping to protect your vehicle
  • Power windows with driver and front passenger express-up/down
  • If obstruction is detected, the anti-pinch feature will auto-reverse
  • Assist handles
  • Front A-pillar mounted for Driver and Passenger
  • Rear B-pillar mounted
  • Wireless Charging
  • Uses induction technology for select portable electronic devices
  • Convenient charging location
  • Power windows with driver express-up/down
  • Head-Up Display
  • Multi-color 15" diagonal Head-Up Display
  • Adjustable vertical position and brightness of the display
  • Universal Home Remote
  • 3-channel programmable
  • Jet Black with Kalahari accents, Perforated Front Leather seat trim
  • Rear Camera Mirror
  • The feature also allows brightness, vertical tilt and zoom adjustments
  • Power sliding rear window with rear defogger
  • Heavy-Duty Air Filter
  • Automatic locking rear differential
  • 4-wheel antilock disc brakes
  • Digital Variable Steering Assist
  • Hill Descent Control
  • Uses antilock braking to help provide a smooth, controlled descent
  • Activates by pushing a button below the instrument panel
  • Four wheel drive
  • Integrated trailer brake controller
  • Integrated with the antilock brake system (ABS)
  • Red vertical recovery hooks
  • Two front frame-mounted
  • 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
  • Brake pad wear indicator
  • Fully boxed frame
  • Hydroformed front section
  • High-strength steel
  • Off-Road suspension
  • In-Vehicle Trailering App
  • Checklist
  • Trailer maintenance reminders
  • Trailer security alerts
  • Trailer mileage
  • Tow/haul reminder
  • Trailer electrical diagnostics
  • Skid plates
  • Help protect the front underbody, oil pan and transfer case
  • Emissions, Federal requirements
  • 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
  • Gooseneck / 5th Wheel Prep Package
  • Hitch platform to accept Gooseneck or 5th wheel hitch
  • Box mounted 7-pin trailer harness
  • AT4 Preferred Equipment Group includes standard equipment
  • AT4 Preferred Package
  • Rear sliding power window
  • LED roof marker lamps
  • AT4 Premium Plus Package
  • Technology Package
  • AT4 high clearance step
  • AT4 Preferred Package on AT4
  • Option/package discount
  • Signature LED Daytime Running Lamps
  • LED Daytime Running Lamps
  • Safety Alert Seat
  • You can also switch to beeping crash avoidance alerts
  • Trailer Side Blind Zone Alert
  • Rear Cross Traffic Alert
  • Front and Rear Park Assist
  • These can help you park and avoid collisions
  • Trailering Information Label
  • Buckle to Drive
  • HD Surround Vision
  • Can help you park or avoid vehicles and objects
  • Trailering camera provisions
  • Includes connector for accessory wiring harness
  • Hitch View
  • Shows a close-up view of the trailer hitch
  • Hitch Guidance
  • Can help you line up the hitch to your trailer
  • OnStar services capable
  • Teen Driver
  • Following Distance Indicator
  • Designed to help you maintain a safe following distance
  • 6 airbags
  • Dual-stage frontal airbags for driver and front outboard passenger
  • Head-curtain airbags for outboard seating positions
  • Tire Pressure Monitoring System with Tire Fill Alert
  • Rear Seat Belt Indicator

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$81,135Dealer asking price · 12 mi
Market value$77,596Market value · based on 93 comparable cars
vs. market Fair price+4.6%Fair price · based on 93 comparable cars

Where this price sits

Among the highest-priced · 10% of 93 similar listings ask more than this car.

$71,931lowest$84,130highest
Middle 50% of asking pricesMarket valueThis car

Price vs. market value

+4.6%
−25%Market value+25%
Fair price$3,539 above the market value of $77,596

Price range

$81,135
$71,931$84,130
84th lowest price of 94 similar listings nationwideTick marks the market value · range of 93 similar listings

AutosXchange Insights

  • Compared with 93 new 2026 GMC Sierra 2500 4-Wheel AT4 listings nationwide.
  • Priced $3,539 above the market value of 93 comparable cars — compare options, condition and history.
  • 84th lowest price of 94 similar listings nationwide.
  • About 12 miles per year of age (U.S. average is roughly 12,000–14,000).
  • Stock # 26G2298 — 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 ($81,135).0 price changes at this dealership: $81,135 → $81,135.

$80.9k$81.0k$81.1k$81.2k$81.3k$81.4kNov 6Nov 7Nov 8Nov 9Nov 10Nov 11

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 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 4-Wheel AT4 · new · nationwide. Showing the 12 nearest of 93 comparable cars for sale, nearest first.

2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT48 miles · Legacy GMC · Slidell, LA · 0 mi away$77,085$4,050 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT48 miles · Legacy GMC · Slidell, LA · 0 mi away$77,085$4,050 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT49 miles · Legacy GMC · Slidell, LA · 0 mi away$77,580$3,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT44 miles · Legacy GMC · Slidell, LA · 0 mi away$77,580$3,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT48 miles · Legacy GMC · Slidell, LA · 0 mi away$77,580$3,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT48 miles · Legacy GMC · Slidell, LA · 0 mi away$77,580$3,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT44 miles · Legacy GMC · Slidell, LA · 0 mi away$77,580$3,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT44 miles · Legacy GMC · Slidell, LA · 0 mi away$78,085$3,050 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT47 miles · Legacy GMC · Slidell, LA · 0 mi away$78,580$2,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT46 miles · Legacy GMC · Slidell, LA · 0 mi away$78,580$2,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Standard Box 4-Wheel Drive AT44 miles · Legacy GMC · Slidell, LA · 0 mi away$78,580$2,555 less than this car2026 GMC Sierra 2500 HD Crew Cab Long Box 4-Wheel Drive AT4 vehicle photo2026 GMC Sierra 2500 HD Crew Cab Long Box 4-Wheel Drive AT46 miles · Legacy GMC · Slidell, LA · 0 mi away$78,980$2,155 less than this car

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