2025 GMC Sierra 2500HD AT4



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Vehicle Information

VIN: 1GT4UPEY0SF360088
Stock #: 19G12601A
Model Code: TK20743
  • Body Style 4D Crew Cab
  • Exterior Color Onyx Black
  • Interior Color Jet Black With Kalahari Accents
  • Mileage 24,337
  • Engine 8 Cyl - 6.6 L
  • Transmission 10-Speed Automatic
  • Fuel Type Diesel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

Meet the 2025 GMC Sierra 2500HD AT4, a commanding diesel pickup engineered for serious work and premium comfort. This one-owner truck arrives with a clean Carfax and rolls on authentic GMC capability with the legendary Duramax 6.6L V8 Turbodiesel and 4WD prowess. With just over 24,000 miles, this black beauty delivers the power, technology, and refinement you expect from GMC's professional-grade lineup.

- Back Up Camera
- Heated and Cooled Seats
- Leather Interior
- Sunroof/Moonroof
- Gooseneck/5th Wheel Prep Package
- Engine Block Heater
- 220-Amp Alternator
- SiriusXM with 360L Trial Subscription
- Power Sunroof
- Wireless Phone Projection

This AT4 is outfitted with the AT4 Premium Plus Package and premium appointments throughout, including a Bose 7-speaker sound system, heated steering wheel, and available trailer camera provisions with integrated trailering software. The bed features spray-on bedliner protection and cargo area LED lighting. Advanced safety technology includes automatic emergency braking, rear cross traffic alert, and lane departure warning. Climate control spans dual-zone auto temperature, ventilated front seats, and heated rear outboard seating for year-round comfort.

The off-road-ready suspension, hill descent control, and 2-speed active transfer case position this Sierra for adventure, while the multicolor head-up display and intuitive GMC infotainment keep you connected and in command. Inside, you'll find memory seating with 10-way power adjustment and lumbar support, wireless charging, and multiple USB and 120-volt power outlets. Alloy wheels, rain-sensing wipers, and fully automatic headlights complete the package.

Visit our showroom to experience this premium Sierra 2500HD AT4 and discover why it's the truck for those who demand excellence.

All Features

  • AT4 Preferred Package
  • AT4 Premium Plus Package
  • Gooseneck/5th Wheel Prep Package
  • Preferred Equipment Group 4SB
  • Technology Package
  • X31 Off-Road Package
  • 7 Speakers
  • AM/FM radio: SiriusXM with 360L
  • Bose Premium 7-Speaker Sound System
  • Radio: AM/FM w/Premium GMC Infotainment System
  • SiriusXM w/360L Trial Subscription
  • Steering Wheel Audio Controls
  • Air Conditioning
  • Automatic temperature control
  • Electric Rear-Window Defogger
  • Front dual zone A/C
  • Rear window defroster
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel Power Outlet
  • Driver Memory
  • Memory seat
  • Power driver seat
  • Power steering
  • Power windows
  • Push Button Start
  • Remote keyless entry
  • Remote Vehicle Starter System
  • Steering wheel mounted audio controls
  • Universal Home Remote
  • Manual Tilt-Wheel/Telescoping Steering Column
  • Off-Road Suspension
  • Speed-sensing steering
  • Traction control
  • 4-Wheel Disc Brakes
  • ABS brakes
  • Dual front impact airbags
  • Dual front side impact airbags
  • Emergency communication system: OnStar
  • Front anti-roll bar
  • Front wheel independent suspension
  • Keyless Open & Start
  • Low tire pressure warning
  • Occupant sensing airbag
  • Overhead airbag
  • Power Sunroof
  • Pickup Box
  • Brake assist
  • Electronic Stability Control
  • Lane Departure Warning System
  • Hill Descent Control
  • Auto High-beam Headlights
  • Delay-off headlights
  • Front fog lights
  • Fully automatic headlights
  • Panic alarm
  • Security system
  • Unauthorized Entry Theft-Deterrent System
  • Speed control
  • 2-Speed Active Transfer Case
  • 220-Amp Alternator
  • Engine Block Heater
  • Exhaust Brake
  • Heavy-Duty 80 Amp Battery
  • Auto-dimming door mirrors
  • Bumpers: body-color
  • Gloss Black Header Grille & Grille Insert Bars
  • Heated door mirrors
  • IntelliBeam Automatic High Beam On/Off
  • LED Cargo Area Lighting
  • LED Smoked Amber Roof Marker Lamps
  • Off-Road High Clearance Step (LPO)
  • Power door mirrors
  • Rear step bumper
  • Rear Wheelhouse Liners
  • Spray-On Pickup Bedliner w/GMC Logo
  • Turn signal indicator mirrors
  • Winter Grille Cover
  • 2 Charge-Only Rear USB Ports
  • 2 Charge/Data USB Ports Inside Center Console
  • 2 USB Ports
  • Apple CarPlay/Android Auto
  • Auto-dimming Rear-View mirror
  • Automatic Emergency Braking
  • Bed View Camera w/2 Trailer Camera Provisions
  • Buckle to Drive
  • Compass
  • Driver door bin
  • Driver vanity mirror
  • Floor-Mounted Center Console
  • Following Distance Indicator
  • Forward Collision Alert
  • Front Pedestrian Braking
  • Front Prem Floor Liners w/Removable Carpet Insert
  • Front reading lights
  • HD Surround Vision
  • Heated steering wheel
  • Illuminated entry
  • Inside Rearview Auto-Dimming Rear Camera Mirror
  • Multicolor 15" Diagonal Head-Up Display
  • OnStar Services Capable
  • Outside temperature display
  • Overhead console
  • Passenger vanity mirror
  • Rear Cross Traffic Alert
  • Rear Prem Floor Liners w/Removable Carpet Insert
  • Rear reading lights
  • Rear seat center armrest
  • Tachometer
  • Telescoping steering wheel
  • Tilt steering wheel
  • Trailer Cam Provisions & Trailer Viewing Software
  • Trailer Side Blind Zone Alert
  • Trip computer
  • Ultrasonic Front & Rear Park Assist
  • Voltmeter
  • Wireless Charging
  • Wireless Phone Projection
  • 10-Way Power Driver Seat Adjuster w/Lumbar
  • 10-Way Power Passenger Seat Adjuster w/Lumbar
  • Front Bucket Seats
  • Front Center Armrest
  • Heated 2nd Row Outboard Seats
  • Heated Driver & Front Outboard Passenger Seats
  • Heated front seats
  • Heated rear seats
  • Perforated Leather-Appointed Front Seat Trim
  • Power passenger seat
  • Safety Alert Seat
  • Split folding rear seat
  • Ventilated Driver & Front Passenger Seats
  • Ventilated front seats
  • Passenger door bin
  • Hitch Guidance w/Hitch View
  • In-Vehicle Trailering System App
  • Alloy wheels
  • Wheels: 20" High Gloss Black 8 Spokes Aluminum
  • Deep-Tinted Glass
  • Front Rain-Sensing Wipers
  • Power Front Passenger Windows w/Express Up/Down
  • Power Sliding Rear Window w/Defogger
  • Rain sensing wipers
  • Variably intermittent wipers
  • 1 OWNER!**
  • CLEAN CARFAX!**
  • BACK UP CAMERA **
  • LEATHER **
  • SUNROOF / MOONROOF **
  • HEATED AND COOLED SEATS **
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Price does not include licensing costs or registration fees. Out-of-state buyers are responsible for taxes and registration fees in their home state. Prices reflect all rebates and incentives available to all purchasers, including any applicable Ford Certification Fees and the $899 dealer administration fee. Incentives and rebates are based on the dealer’s location and may vary for out-of-state buyers. Other Incentives may be available for qualified and applicable buyers. Vehicle inventory and offers are updated frequently and vehicles may be in transit, subject to prior sale or change without notice. Please confirm availability with the dealer. We make every effort to ensure accurate listings but are not responsible for errors or omissions. CONSENT TO CONTACT By submitting your contact information, you agree to be contacted by phone regarding vehicle purchases or financing. Clicking "Submit" serves as your electronic signature. You may withdraw consent by visiting the link to our privacy policy and request to be removed by submitting a personal data request.