2026 GMC Sierra 2500HD AT4X 4-Door Truck
Exterior Color:
Onyx Black
Interior Color:
Obsidian Rush
Stock Number:
C6663
Mileage:
2,978
Engine:
Duramax 6.6L Biodiesel Turbo V8 470hp 975ft. lbs.
Fuel:
Diesel
Transmission:
Automatic
Title:
Clear
VIN:
1GT4UZEY6TF175105
CARFAX:
Internet Price:
$104,900
Vehicle Description
Motorcars International is pleased to present this 2026 GMC Sierra 2500 AT4X Duramax — Fully Custom | No Expense Spared
This 2026 GMC Sierra 2500 AT4X isn’t just optioned — it’s purpose-built. Finished in Onyx Black, this truck blends factory AT4X capability with high-end aftermarket upgrades to create a commanding, one-of-one build that stands apart from anything else on the road.
At its core is the legendary Duramax diesel, delivering immense torque and proven reliability, wrapped in GMC’s most aggressive heavy-duty off-road platform. From there, this build was elevated with premium components chosen for durability, performance, and visual impact.
Highlights & Custom Upgrades
Factory AT4X Package – Multimatic DSSV dampers, locking differentials, and off-road-tuned suspension
Duramax Turbo-Diesel Power – Effortless towing, long-haul confidence, and unmatched torque
Fab Fours Grille Guard – Heavy-duty front protection with aggressive styling
Warn Winch – Trusted recovery power for real-world off-road capability
Rigid Industries LED Lighting – Exceptional forward visibility with premium-grade illumination
SmartCap EVO Topper – Modular, expedition-ready topper built for strength and versatility
37” All-Terrain Tires – Massive footprint that delivers both stance and traction
Denali Ultimate Wheels – Luxury-grade contrast that elevates the truck’s presence
ICON Rocklear Coating (15-Year Protection) – Industry-leading protection for lasting gloss and durability
GMC Illuminated Front Grille Logo – Subtle, premium detail that completes the custom look
Why This Truck Is Different
This isn’t a bolt-on build — it’s a carefully curated custom truck designed to perform as aggressively as it looks. Every component was selected to complement the AT4X platform, maintaining factory-level refinement while dramatically increasing capability and presence.
Whether parked curbside, hauling serious weight, or heading deep off the grid, this Sierra AT4X delivers confidence, exclusivity, and authority.
If you’re looking for a heavy-duty truck that no one else has — and few can replicate — this is it.
This 2026 GMC Sierra 2500 AT4X isn’t just optioned — it’s purpose-built. Finished in Onyx Black, this truck blends factory AT4X capability with high-end aftermarket upgrades to create a commanding, one-of-one build that stands apart from anything else on the road.
At its core is the legendary Duramax diesel, delivering immense torque and proven reliability, wrapped in GMC’s most aggressive heavy-duty off-road platform. From there, this build was elevated with premium components chosen for durability, performance, and visual impact.
Highlights & Custom Upgrades
Factory AT4X Package – Multimatic DSSV dampers, locking differentials, and off-road-tuned suspension
Duramax Turbo-Diesel Power – Effortless towing, long-haul confidence, and unmatched torque
Fab Fours Grille Guard – Heavy-duty front protection with aggressive styling
Warn Winch – Trusted recovery power for real-world off-road capability
Rigid Industries LED Lighting – Exceptional forward visibility with premium-grade illumination
SmartCap EVO Topper – Modular, expedition-ready topper built for strength and versatility
37” All-Terrain Tires – Massive footprint that delivers both stance and traction
Denali Ultimate Wheels – Luxury-grade contrast that elevates the truck’s presence
ICON Rocklear Coating (15-Year Protection) – Industry-leading protection for lasting gloss and durability
GMC Illuminated Front Grille Logo – Subtle, premium detail that completes the custom look
Why This Truck Is Different
This isn’t a bolt-on build — it’s a carefully curated custom truck designed to perform as aggressively as it looks. Every component was selected to complement the AT4X platform, maintaining factory-level refinement while dramatically increasing capability and presence.
Whether parked curbside, hauling serious weight, or heading deep off the grid, this Sierra AT4X delivers confidence, exclusivity, and authority.
If you’re looking for a heavy-duty truck that no one else has — and few can replicate — this is it.
Additional Photos
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Contact Information
Vehicle Features & Options
Standard Features
Air Conditioning
- Air filtration
- Front air conditioning: automatic climate control
- Front air conditioning zones: dual
- Rear vents: second row
Airbags
- Airbag deactivation: occupant sensing passenger
- Front airbags: dual
- Side airbags: front
- Side curtain airbags: front, rear
Audio System
- Antenna type: diversity, mast
- Auxiliary audio input: Bluetooth, iPod/iPhone, USB
- Premium brand: Bose
- Radio: AM/FM, touch screen display, voice operated
- Radio data system
- Rear audio: pickup bed
- Satellite radio: SiriusXM
- Speed sensitive volume control
- Subwoofer: 1
- Total speakers: 11
Brakes
- ABS: 4-wheel
- Braking assist
- Electronic brakeforce distribution
- Electronic parking brake: auto off
- Front brake type: ventilated disc
- Power brakes
- Rear brake type: ventilated disc
Comfort Features
- Armrests: rear center with cupholders, rear folding
- Center console trim: leather
- Floor mat material: rubber/vinyl
- Floor material: carpet
- Floor mats: front, rear
- Heated steering wheel
- Steering wheel trim: leather
Convenience Features
- Adaptive cruise control
- Adaptive stop and go cruise control: semi-automatic
- Assist handle: front, rear
- Capless fuel filler system
- Center console: front console with armrest and storage
- Cupholders: front
- Memorized settings: 2 driver, driver seat, side mirrors
- Multi-function remote: panic alarm, proximity entry system
- One-touch windows: 4
- Overhead console: front
- Power outlet(s): 115V cargo area, 115V front, USB front, USB rear, USB-C front, USB-C rear
- Power steering: variable/speed-proportional
- Power windows: lockout button
- Push-button start
- Reading lights: front, rear
- Rearview mirror: auto-dimming, camera-based
- Remote engine start
- Steering wheel: tilt and telescopic
- Steering wheel mounted controls: audio, cruise control, multi-function, phone, voice control
- Storage: door pockets, in seat cushion
- Sun visors
- Universal remote transmitter: Homelink - garage door opener
- Vanity mirrors: dual illuminating
- Wireless charging station: front
Exterior Features
- Bumper detail: rear integrated corner step
- Door handle color: body-color
- Exhaust tip color: stainless steel
- Fender lip moldings: black
- Front bumper color: black
- Grille color: black, black surround
- Hood scoop
- Mirror color: black
- Mudguards: front, rear
- Pickup bed light: LED
- Pickup bed liner: spray-on
- Rear bumper color: black
- Running board color: black
- Running boards: illuminated, power retractable
- Skid plate(s): front, powertrain
- Tailgate: lift assist, multi-function split-folding, power locking, power open, removable, step
- Window trim: black
In Car Entertainment
- Connected in-car apps: app marketplace integration, Google Assistant, Google POIs, Google search
- Infotainment: GMC Infotainment System, Google Built-In
- Infotainment screen size: 13.4 in.
- Smartphone integration: wireless Android Auto, wireless Apple CarPlay
Instrumentation
- Clock
- Compass
- Customizable instrument cluster
- Digital odometer
- External temperature display
- Fuel economy display: MPG, range
- Gauge: oil pressure, tachometer
- Head-up display
- Instrument cluster screen size: 12.3 in.
- Multi-function display
- Powertrain hour meter
- Trip odometer
- Warnings and reminders: coolant temperature warning, lamp failure, low battery, low fuel level, low oil pressure, maintenance due
Lights
- Daytime running lights: LED
- Exterior entry lights: approach lamps, puddle lamps
- Front fog lights: LED
- Headlights: auto delay off, auto high beam dimmer, auto on/off, LED, wiper activated
- Roof-mounted lights
- Taillights: LED
Mirrors
- Side mirror adjustments: power, power folding, power telescoping, reverse gear tilt
- Side mirrors: auto-dimming, heated, integrated turn signals
- Towing mirrors
Powertrain
- 4WD selector: electronic hi-lo
- 4WD type: part time w/ on demand setting
- Alternator: 170 amps
- Auxiliary oil cooler
- Auxiliary transmission fluid cooler
- Battery: heavy duty, maintenance-free
- Battery rating: 720 CCA
- Battery saver
- Locking differential: rear
Roof
- Moonroof / Sunroof: anti-trapping, one-touch open/close, power glass, sliding sunshade, tilt/slide
Safety
- Automatic emergency braking: front, front pedestrian
- Blind spot safety: sensor/alert, trailer coverage
- Camera system: cargo area, surround view, trailer rearview
- Camera system washer: front
- Check rear seat reminder
- Child safety door locks
- Child seat anchors: LATCH system
- Cross traffic alert: rear
- Lane deviation sensors
- Parking sensors: front, rear
- Pre-collision warning system: audible warning, pedestrian detection, vibrating driver seat, visual warning
- Programmable safety key
- Rearview monitor: in dash
Seatbelts
- Emergency locking retractors: front
- Front seatbelts: 3-point
- Rear seatbelts: 3-point
- Seatbelt pretensioners: front
- Seatbelt warning sensor: front
Seats
- Driver seat: heated, massaging, ventilated
- Driver seat power adjustments: 16, height, lumbar, reclining
- Front headrests: 2, adjustable
- Front seat type: bucket
- Passenger seat: heated, massaging, ventilated
- Passenger seat power adjustments: 16, height, lumbar, reclining
- Rear headrests: 3, adjustable
- Rear seat: heated
- Rear seat folding: folds up
- Rear seat type: 60-40 split bench
- Upholstery: leather
Security
- Anti-theft system: alarm, vehicle immobilizer
- Power door locks: anti-lockout, auto-locking
Stability and Traction
- Hill holder control
- Off-road driving assist: hill descent
- Roll stability control
- Stability control
- Traction control
- Trailer stability control
Suspension
- Front shock type: spool valve
- Front spring type: torsion bars
- Front stabilizer bar: diameter 35 mm
- Front suspension classification: independent
- Front suspension type: upper and lower control arms
- Rear shock type: spool valve
- Rear spring type: leaf
- Rear suspension classification: solid live axle
- Rear suspension type: multi-leaf
- Tuned suspension: off-road
Telematics
- Driver assistance app: roadside assistance
- Electronic messaging assistance: voice operated, with read function
- Hands-free phone call integration: voice operated
- Navigation data: real time traffic
- Navigation system: touch screen display, voice operated
- Satellite communications: OnStar, voice guided directions
- Smart device app compatibility: Amazon Alexa, myGMC with Connected Access
- Smart device app function: engine start, horn/light operation, lock operation, maintenance status, vehicle location
- Wi-Fi: hotspot
- Wireless data link: Bluetooth
Towing and Hauling
- Pickup bed cargo management: tie-down anchors
- Tow hooks: front
- Tow/Haul mode
- Trailer brake controller
- Trailer hitch
- Trailer wiring: 4-pin, 7-pin
Wheels and Tires
- Spare tire mount location: underbody
- Spare tire size: full-size
- Spare wheel type: steel
- Tire Pressure Monitoring System: trailer ready
- Wheels: aluminum alloy with painted accents
Windows
- Front wipers: rain sensing, variable intermittent
- Pickup sliding rear window: power horizontal
- Power windows: safety reverse
- Tinted glass
- Window defogger: rear
Installed Options
Exterior Features
- Icon Rocklear Coating
- Onyx Black Paint
Lights
- LED Front Logo
- Rigid LED Lighting
other
- Fab Four Grill Guard
- Smart/EVO Topper
Tires and Rims
- 37" Tires and Denali Ultimate Wheels
Towing and Hauling
- Gooseneck / 5th Wheel Prep PackageIncludes hitch platform w/ tray to accept ball and drilled box holes with caps installed and box mounted 7-pin trailer harness.
- Warn Winch
Vehicle Condition & History
.
Shipping Information
We recommend ShipMyVehicle.com for vehicle shipping.
Dealership Information
Contact Us
Name:
Main Phone:
Alt. Phone:
Email:
Business Hours
| Mon: | 9-5 |
|---|---|
| Tue: | 9-5 |
| Wed: | 9-5 |
| Thu: | 9-5 |
| Fri: | 9-5 |
| Sat: | By Appointment |
| Sun: | Closed |
Location
2841 E Industrial Dr
Springfield, MO 65802
Springfield, MO 65802
