
2025 GMC Sierra 2500HD AT4
- Used
- Diesel
The overview
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black
- Odometer
- 24,681 miles
- Body/Seating
- Crew Cab Short Bed Truck/5 seats
- Seats
- 5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- 6.6L V8 32V DDI OHV Turbo Diesel
- VIN
- 1GT4UPEY6SF256107
- Stock Number
- P256107
The highlights
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
- Front dual zone A/C
- Auto high-beam headlights
The full 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
- Heated steering wheel
- Illuminated entry
- Memory seat
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- 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 wheel independent suspension
- Power steering
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- Primary LCD size: 13.4"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose
- Speakers: 7
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless Phone Charger: front
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Heated front seats
- Heated rear seats
- Leather upholstery
- Max seating capacity: 5
- Power 2-way driver lumbar support
- Power 2-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
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- 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
- Engine displacement: 6.6 L
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,027mm (79.8")
- Exterior length: 6,369mm (250.8")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- 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")
- Turning radius: 8.0m (26.3')
- 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
- 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
- Traction control
Notes from the dealer
2025 GMC Sierra 2500HD AT4 4WD Duramax Diesel X31 Off-Road One Owner Take on any challenge in luxury with this 2025 GMC Sierra 2500HD AT4. Powered by the legendary 6.6L Duramax Turbo Diesel and paired with the Allisonà 10-speed automatic transmission, this premium heavy-duty truck delivers exceptional towing capability, advanced off-road performance, and first-class comfort. Finished in stunning Onyx Black, this Sierra AT4 is built to stand out both on and off the pavement. Premier Certified 2025 GMC Sierra 2500HD AT4 4WD is powered by the 6.6L Duramax V8 Turbo Diesel and paired with the Allisonà 10-speed automatic transmission, offering incredible torque, heavy-duty capability, and refined performance. Finished in Onyx Black, this CARFAX One-Owner Sierra is loaded with the AT4 Preferred Equipment Group 4SB, X31 Off-Road Package, premium technology, luxury interior appointments, and advanced trailering features. Key Features Premier Certified CARFAX One-Owner 6.6L Duramax Turbo Diesel V8 Allisonà 10-Speed Automatic Transmission 4WD AT4 Premium Off-Road Package X31 Off-Road Package Preferred Equipment Group 4SB Bose Premium 7-Speaker Audio System HD Surround Vision Camera System Bed View Camera with Trailer Camera Provisions Trailer Viewing Software In-Vehicle Trailering System App Hitch Guidance with Hitch View Trailer Side Blind Zone Alert Wireless Apple CarPlay & Android Auto Wireless Phone Charging Heated & Ventilated Front Seats Heated Rear Outboard Seats Perforated Leather-Appointed Seating with Kalahari Accents Remote Vehicle Start Spray-On GMC Bedliner LED Cargo Area Lighting Rear Cross Traffic Alert Safety Alert Seat Front & Rear Park Assist Rain-Sensing Windshield Wipers 120-Volt Bed Power Outlet 120-Volt Interior Power Outlet 20 High Gloss Black Aluminum Wheels Gloss Black AT4 Grille Push Button Start Performance & Capability Allisonà 10-Speed Automatic Transmission Legendary 6.6L Duramax Turbo Diesel 2-Speed Active Transfer Case X31 Off-Road Suspension Hill Descent Control 3.42 Rear Axle Ratio Integrated Advanced Trailering Technology HD Surround Vision with Trailer Camera Compatibility Heavy-Duty Towing & Payload Capability Built for Towing, Ranching, Construction, and Off-Road Adventures Why Buyers Love It The 2025 GMC Sierra 2500HD AT4 combines heavy-duty diesel capability with premium luxury and advanced technology. The proven 6.6L Duramax Diesel and Allisonà 10-speed transmission provide exceptional towing confidence, while the AT4 and X31 Off-Road Package deliver superior
Disclaimer:
The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
1Dealer Discount applied to everyone
1Dealer Discount applied to everyone