Vehicle Details
Discover the capability and refinement of this 2026 GMC Sierra 2500 AT4X, a heavy-duty pickup built for drivers who demand strength, premium comfort, and advanced technology. Powered by a V8, 6.6L Diesel engine and equipped with 4WD, this GMC Sierra 2500 AT4X is engineered to handle demanding jobs, towing needs, and off-road confidence with ease. Its bold exterior design, rugged stance, and AT4X-exclusive details make a strong impression wherever the road leads. Inside, this GMC delivers a thoughtfully designed cabin with upscale comfort and modern convenience. Enjoy the Heated Steering Wheel on colder mornings, along with Hands Free Bluetooth for seamless connectivity on the go. Lane Departure Warning adds an extra layer of confidence during highway driving, while Cross-Traffic Alert helps increase awareness in busy parking lots and crowded areas. With Android Auto, you can access your favorite apps, navigation, music, and messages with ease. Whether you need a dependable work truck or a premium truck for everyday driving, the 2026 GMC Sierra 2500 AT4X offers impressive capability and advanced features in one refined package. Visit us today to explore this exceptional heavy-duty truck located in Breaux Bridge, LA, and experience the power, technology, and comfort that make the GMC Sierra 2500 AT4X stand out.
Equipment
Keep your hands warm all winter with a heated steering wheel in this vehicle . An off-road package is equipped on the vehicle. This 3/4 ton pickup offers Android Auto for seamless smartphone integration. The leather seats in this unit are a must for buyers looking for comfort, durability, and style. This unit offers Apple CarPlay for seamless connectivity. This 2026 GMC Sierra 2500's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. Never get into a cold vehicle again with the remote start feature on this 3/4 ton pickup. Protect this 2026 GMC Sierra 2500 from unwanted accidents with a cutting edge backup camera system. This 2026 GMC Sierra 2500 features a hands-free Bluetooth phone system. This vehicle has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. The vehicle's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing.
New 2026 GMCSierra 2500 HD AT4X
- Diesel
- Exterior Color
- Tan
- Interior Color
- Obsidian Rush
- Body/Seating
- Truck Crew Cab/5 seats
- Seats
- 5 seats
- Transmission
- 10-speed automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4UZEY3TF440479
- Stock Number
- 26GB5389
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Power moonroof
- Premium audio system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
Included Packages & Accessories
- Federal Emissions Requirements
- 3.42 Axle Ratio
- GVWR: 11,350 lbs
- Engine: Duramax 6.6L Turbo-Diesel V8
- Capped Fuel Fill
- 220-Amp Alternator
- Dual Heavy-Duty 70 Amp Battery
- Winter Grille Cover
- Exhaust Brake
- Engine Block Heater
- Transmission: 10-Speed Automatic
- Hitch Package
- Rear Underseat Storage
- Gooseneck/5th Wheel Prep Package
Detailed Specifications
- 1-touch down
- 1-touch up
- Adaptive Cruise Control
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: OnStar
- Front beverage holders
- Front dual zone A/C
- Garage door transmitter
- Heated steering wheel
- Illuminated entry
- Memory seat
- Moonroof sunshade: manual
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power moonroof
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start
- Remote keyless entry
- Speed control
- Surround View Monitor: HD Surround Vision w/Hitch View yes
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front tires: 305/70RR18.0E
- Front wheel independent suspension
- Power steering
- Rear tires: 305/70RR18.0E
- Single rear wheels
- Speed-sensing steering
- Wheel size: 18"
- 1st row LCD monitors: 2
- AM/FM radio: SiriusXM with 360L
- Premium audio system: Premium GMC Infotainment System
- Primary LCD size: 13.4"
- Satellite radio trial duration with new vehicle purchase (months): 3
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose Performance Series
- Speakers: 12
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless Phone Charger: front
- Wireless phone connectivity: Bluetooth
- Basic warranty: 36 months/36,000miles
- Corrosion perforation warranty: 72 months/100,000miles
- Diesel engine warranty: 60 months/100,000miles
- Maintenance warranty: 12 months/ unlimited distance
- Powertrain warranty: 60 months/60,000miles
- Roadside assistance coverage: 60 months/60,000miles
- Front center armrest
- Front seats: bucket
- Heated front seats
- Heated rear seats
- Leather steering wheel
- Leather upholstery
- Max seating capacity: 5
- Power 4-way driver lumbar support
- Power 4-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: V-8
- Drive type: four-wheel
- Electric motor 1 torque: none
- Electric motor horsepower: none
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Horsepower: 470hp @ 2,800RPM
- Hybrid electric powertrain type: none
- Hybrid system combined power torque: none
- Hybrid system net power: none
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Number of valves: 32
- Rear locking differential
- Recommended fuel: Diesel
- Standard fuel economy fuel type: diesel
- Torque: 975 lb.-ft. @ 1,600RPM
- Transmission: 10 speed automatic
- Variable valve control
- Approach angle: 32 deg
- Departure angle: 26 deg
- Ground clearance (min): 295mm (11.6")
- Ramp breakover angle: 21 deg
- Auto-dimming door mirrors
- Bedliner
- Heated door mirrors
- Hitch Class: IV
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch
- Trailer sway control
- Turn signal indicator mirrors
- Compression ratio: 16.00 to 1
- Curb weight: 3,717kg (8,195lbs)
- Engine bore x stroke: 103.0mm x 99.0mm (4.06" x 3.90")
- Engine displacement: 6.6 L
- Engine torque: 975 lb.-ft. @ 1,600RPM
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,100mm (82.7")
- Exterior length: 6,369mm (250.8")
- Front headroom: 1,013mm (39.9")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- GVWR: 5,148kg (11,350lbs)
- Payload: 1,411kg (3,111lbs)
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Towing capacity: 8,391kg (18,500lbs)
- Turning radius: 7.9m (25.9')
- Wheelbase: 4,039mm (159.0")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: Trailer Side Blind Zone Alert warning
- Compass
- Configurable
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Heads up display
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic front and rear
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Tracker system: Stolen Vehicle Assistance
- Traction control
Dealer Notes
KBB.com Consumer Reviews
