2025 GMC SIERRA 2500HD AT4X AEV EDITION 6.6L DURAMAX DIESEL AEV GOOSENECK PREP SUNROOF ONYX BLACK LANCASTER PA
If you're looking for one of the most capable heavy-duty trucks GMC has ever built, this 2025 GMC Sierra 2500HD AT4X AEV Edition is in a league of its own.
Finished in Onyx Black and powered by the legendary 6.6L Duramax Turbo Diesel, this truck combines luxury, serious towing capability, and factory-engineered off-road performance into one incredible package.
Built in partnership with American Expedition Vehicles (AEV), the AT4X AEV Edition is designed for truck owners who demand more. High-approach stamped steel AEV front bumper, stamped steel AEV rear bumper, gloss black AEV wheels, AEV floor liners, and aggressive factory styling make this one of the most sought-after HD trucks on the market.
Under the hood is GM's proven 6.6L Duramax Turbo Diesel, paired with the Allison-inspired 10-speed automatic transmission. With massive torque, exceptional towing capability, and outstanding long-term reliability, it's ready for everything from fifth wheels and horse trailers to campers, equipment, and long-distance travel.
The premium interior is every bit as impressive.
Full-grain Obsidian Rush leather seating.
Heated and ventilated front seats.
Heated rear outboard seats.
Power sunroof.
Premium Bose 12-speaker sound system.
15-inch Head-Up Display.
Rear Camera Mirror.
Wireless charging.
This truck delivers first-class comfort whether you're on the highway or miles from the pavement.
When it comes to towing, it's fully equipped.
Factory Gooseneck/5th Wheel Prep Package.
Trailer Camera Provisions.
Trailer Viewing Software.
Trailer Side Blind Zone Alert.
Trailer Tire Pressure Monitoring.
HD Surround Vision.
Bed View Camera.
Everything you need for confident towing is already built in.
Off-road capability is where the AT4X AEV truly separates itself from the competition. Hill Descent Control, two-speed transfer case, AEV armor, premium suspension tuning, and factory heavy-duty protection allow this truck to confidently tackle trails while remaining comfortable on the highway.
Additional highlights include LED cargo lighting, spray-on bedliner, roof marker lamps, rain-sensing wipers, rear wheelhouse liners, remote start, front and rear park assist, Safety Alert Seat, and wireless Apple CarPlay and Android Auto.
If you're searching for a 2025 GMC Sierra 2500HD AT4X AEV Edition for sale in Pennsylvania, a Duramax diesel truck near Lancaster, Ephrata, Lititz, Harrisburg, York, Reading, Lebanon, Allentown, Philadelphia, Baltimore, Maryland, New Jersey, or Delaware, this truck deserves a serious look.
Finding a 2025 Sierra 2500HD AT4X AEV Edition equipped with the 6.6L Duramax Diesel, Gooseneck Prep Package, Head-Up Display, Bose Premium Audio, HD Surround Vision, factory AEV equipment, and premium full-grain leather is exceptionally rare.
Available now at Mark Martin Motors in Ephrata, PA, proudly serving Lancaster County and customers nationwide.
Call or message Mark Martin Motors today before this incredible Sierra 2500HD AT4X AEV Edition is gone.
2025 GMC Sierra 2500HD AT4X
- Used
- Diesel
Mark Martin Motors
Call 888-726-1782
We’re here to help
The overview
- Exterior Color
- Onyx Black
- Interior Color
- Obsidian Rush
- Odometer
- 19,346 miles
- Body/Seating
- Truck/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- VIN
- 1GT4UZEY6SF192789
- Stock Number
- 12617FM
The highlights
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Power moonroof
- 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
Notes from the dealer
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
- 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
- Primary LCD size: 13.4"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: brand
- 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
- 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
- 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
- Departure angle: 26 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
- Engine displacement: 6.6 L
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,100mm (82.7")
- 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: 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
- Traction control
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