Meet the 2025 GMC Sierra 2500HD AT4, a heavy-duty truck engineered for those who demand capability without compromise. This Gray Duramax-powered vehicle combines rugged construction with refined comfort, making it an ideal choice for work, adventure, or daily responsibilities that require genuine strength and dependability.
- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 2-Speed Active Transfer Case
- AT4 Premium Plus Package with power sunroof and Technology Package
- Gooseneck/5th Wheel Prep Package with hitch platform and bed-mounted 7-pin trailer harness
- Power-retractable black assist steps with LED lighting
- Off-Road High Clearance Step and X31 Off-Road Package
- HD Surround Vision with Bed View Camera and trailer camera provisions
- Multicolor 15" Head-Up Display and wireless phone projection
- Premium Bose 7-speaker sound system with SiriusXM 360L
- Heated and ventilated front seats with 10-way power adjustment
- Heated second row outboard seats
- Power sunroof
- Spray-on pickup bedliner with GMC logo
The Duramax diesel engine delivers the torque and towing performance serious truck owners expect, backed by an engine block heater for reliable cold-weather starts. The 220-amp alternator and heavy-duty 80-amp battery ensure your truck powers through demanding applications. Equipped with a gooseneck and 5th wheel prep package, this Sierra is ready to handle your largest trailers with stamped bed holes and a removable caps system for easy connection.
Inside, the cab reflects GMC's commitment to driver-focused design. The AT4 Premium Plus Package brings genuine comfort with heated and ventilated front seats, a heated steering wheel, and a sunroof that opens up your driving experience. The Multicolor Head-Up Display keeps critical information at your line of sight, while the premium Bose audio system and SiriusXM keep you connected during every mile.
Advanced technology enhances both capability and safety. The In-Vehicle Trailering System App simplifies trailer management, while Hitch Guidance with Hitch View takes the guesswork out of backing up. Automatic emergency braking, lane departure warning, and rear cross traffic alert work together to keep you aware of your surroundings. The surround vision camera system provides visibility that transforms difficult situations into manageable ones.
The truck's exterior commands respect on any terrain. High-gloss black 20-inch aluminum wheels, a gloss black header grille, and LED smoked amber roof marker lamps establish striking presence. Power retractable assist steps with integrated LED lighting handle the truck's height while adding functional style. Off-road suspension and hill descent control prepare you for unpaved challenges without sacrificing highway composure.
This 2025 Sierra 2500HD AT4 represents the complete package for those who refuse to settle. It merges best-in-class diesel performance, modern safety systems, premium comfort features, and serious towing preparation into one capable machine. Contact us today to schedule a test drive and experience this truck's full potential firsthand.
Pre-Owned 2025 GMCSierra 2500HD AT4
- Diesel
- Exterior Color
- Thunderstorm Gray
- Interior Color
- Jet Black - Kalahari Accents
- Odometer
- 15,713 miles
- Body/Seating
- Truck Crew Cab/5 seats
- Seats
- 5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- 8
- VIN
- 1GT4UPEY0SF226150
- Stock Number
- X186618
Highlighted Features
- 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
Included Packages & Accessories
- THUNDERSTORM GRAY
- WHEELS 20" (50.8 CM) HIGH GLOSS BLACK ALUMINUM WHEELS 8 spokes (STD)
- REAR CAMERA MIRROR inside rearview auto-dimming with full camera display
- ALTERNATOR 220 AMP
- TIRES LT275/65R20 ALL-TERRAIN BLACKWALL (STD)
- TECHNOLOGY PACKAGE includes (DRZ) Rear Camera Mirror and (UV6) Multicolor 15" Diagonal Head-Up Display
- TRANSMISSION ALLISON 10-SPEED AUTOMATIC
- GVWR 11 350 LBS. (5148 KG)
- JET BLACK WITH KALAHARI ACCENTS PERFORATED FRONT LEATHER SEAT TRIM
- ENGINE DURAMAX 6.6L TURBO-DIESEL V8 B20-DIESEL COMPATIBLE (470 hp @ 2800 rpm 975 lb-ft of torque @ 1600 rpm) (Includes (K05) engine block heater.)
- GOOSENECK / 5TH WHEEL PREP PACKAGE -- HITCH PLATFORM TO ACCEPT GOOSENECK OR 5TH WHEEL HITCH. Includes hitch platform with tray to accept ball stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).
- WINTER GRILLE COVER
- UNIVERSAL HOME REMOTE
- ENGINE BLOCK HEATER
- AUDIO SYSTEM 13.4" DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM WITH GOOGLE BUILT IN APPS SUCH AS NAVIGATION AND VOICE ASSISTANCE includes color touch-screen multi-touch display AM/FM stereo Bluetooth streaming audio for music and most phones featuring wireless Android Auto and Apple CarPlay capability for compatible phones (STD)
- SUNROOF POWER
- SEATS FRONT BUCKET with center console (STD)
- AT4 PREFERRED EQUIPMENT GROUP includes standard equipment
- LICENSE PLATE KIT FRONT INCANDESCENT LIGHTING
- REAR AXLE 3.42 RATIO
- AT4 PREMIUM PLUS PACKAGE includes (PDO) AT4 Preferred Package (CF5) power sunroof (CWM) Technology Package and (VXW) AT4 high clearance step LPO
- EXHAUST BRAKE
- WINDOW POWER REAR SLIDING WITH REAR DEFOGGER
- AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote (A48) rear sliding power window and (U01) Roof Marker Lamps
- ASSIST STEPS POWER RETRACTABLE BLACK includes LED lighting
- MULTICOLOR 15" DIAGONAL HEAD-UP DISPLAY
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 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
- Block heater
- Compressor: intercooled turbo
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Horsepower: 470hp @ 2,800RPM
- 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
- 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
- Compression ratio: 16.00 to 1
- Curb weight: 3,733kg (8,229lbs)
- 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: 2,027mm (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")
- GVWR: 5,148kg (11,350lbs)
- Payload: 1,398kg (3,083lbs)
- 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: 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
- 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
Dealer Notes
KBB.com Consumer Reviews
Tax, title, license and dealer fees (unless itemized above) are extra. Not available with special finance or lease offers. MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the ?Fuel Economy? portion of the EPA?s website for details, including a MPG recalculation tool). The features and options listed are for the new 2020 GMC Sierra 1500 and may not apply to this specific vehicle. Tax, title, license (unless itemized above) are extra. Not available with special finance, lease and some other offers.