2026 GMC Sierra 2500 HD AT4

Used
Diesel

$70,995Price

$71,695Corwin Price

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Location Details

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Stock Number: 2266192
Engine: V-8 cyl
Transmission: 10-Speed Automatic
Drivetrain: 4x4
VIN: 1GT4UPEY5TF266192

Odometer: 18,369 miles
Exterior Color: Onyx Black
Interior Color: Jet Black
Body/Seating: Truck Crew Cab/5 seats

Lane departure
Leather upholstery
Automatic temperature control
Emergency communication system
Premium audio 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

Included Options

Preferred Equipment Group 4SB
X31 Off-Road Package
7 Speakers

AM/FM radio: SiriusXM with 360L
Bose Premium 7-Speaker Sound System
Premium audio system: Premium GMC Infotainment System
Radio: AM/FM Stereo with Premium GMC Infotainment System
SiriusXM with 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
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 and Start
Low tire pressure warning
Occupant sensing airbag
Overhead airbag
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
Front License Plate Kit
Gloss Black Header Grille and Grille Insert Bars
Heated door mirrors
IntelliBeam Automatic High Beam on/Off
LED Cargo Area Lighting
Power door mirrors
Rear step bumper
Rear Wheelhouse Liners
Spray-on Pickup Bedliner with 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 with Two 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 Premium Floor Liners with Removable Carpet Insert
Front reading lights
HD Surround Vision
Heated steering wheel
Illuminated entry
OnStar Services Capable
Outside temperature display
Overhead console
Passenger vanity mirror
Rear Cross Traffic Alert
Rear Premium Floor Liners with Removable Carpet Insert
Rear reading lights
Rear seat center armrest
Tachometer
Telescoping steering wheel
Tilt steering wheel
Trailer Cam Provisions and Trailer Viewing Software
Trailer Side Blind Zone Alert
Trip computer
Ultrasonic Front and Rear Park Assist
Voltmeter
Wireless Charging
Wireless Phone Projection
10-Way Power Driver Seat Adjuster with Lumbar
10-Way Power Passenger Seat Adjuster with Lumbar
Front Bucket Seats
Front Center Armrest
Heated 2nd Row Outboard Seats
Heated Driver and 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 and Front Passenger Seats
Ventilated front seats
Passenger door bin
Hitch Guidance with 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 with Express Up/Down
Rain sensing wipers
Variably intermittent wipers

Convenience Features

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

Suspension/Handling

Alloy wheels
Front anti-roll bar
Front wheel independent suspension
Power steering
Single rear wheels
Speed-sensing steering
Tires: all-terrain

Entertainment Features

1st row LCD monitors: 2
Premium audio system: Premium GMC Infotainment System
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

Seats and Trim

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

Powertrain

Cylinder configuration: V-8
Drive type: four-wheel
Electric motor 1 torque: none
Electric motor horsepower: none
Engine liters: 6.6L
Engine location: front
Fuel tank capacity: 36.0gal.
Hybrid electric powertrain type: none
Hybrid system combined power torque: none
Hybrid system net power: none
Hybrid traction battery type: none
Manual-shift auto
Mode select transmission
Rear locking differential
Transmission: 10 speed automatic
Variable valve control

Off-Road Capability

Ground clearance (min): 257mm (10.1")

Body Exterior

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

Specs and Dimensions

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 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")

Lighting, Visibility and Instrumentation

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

Safety and Security

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

7.2 KW Onboard Power

The 2026 GMC Sierra 2500HD AT4 combines rugged capability with premium comfort in a powerful Crew Cab format. This black diesel pickup delivers the performance and technology you expect from the Sierra name, finished in Jet Black with Kalahari Accents leather seating. With moderate mileage, this 4WD truck is ready for work or weekend adventures.

- Duramax 6.6L V8 Turbodiesel engine with 10-Speed Automatic transmission
- 2-Speed Active Transfer Case with X31 Off-Road Package
- Bose Premium 7-Speaker Sound System with SiriusXM and Wireless Phone Projection
- LED Cargo Area Lighting with Spray-on Bedliner and Bed View Camera
- Heated and Ventilated Front Seats with 10-Way Power Adjusters
- Push Button Start with Remote Vehicle Starter and Keyless Open/Start
- Ultrasonic Park Assist with Rear Cross Traffic Alert and Surround Vision
- Heated Rear Window with Front Rain-Sensing Wipers
- Wireless Charging with Engine Block Heater and 220-Amp Alternator
- Preferred Equipment Group 4SB with premium floor liners and multiple USB charging ports

This AT4 is equipped for serious capability and refined daily driving. From its advanced safety suite with automatic emergency braking to its practical bed-mounted and interior power outlets, every detail supports the way you work and live. Get behind the wheel today and experience the confidence that comes with a premium diesel truck.

*Picture may not represent actual vehicle. Price varies based on Trim Levels and Options. See Dealer for in-stock inventory & actual selling price. All prices plus tax, title & registration fees with approved credit. MSRP includes delivery, processing, and handling fees. Dealer documentation fee not included; fee amount varies by location. Instant savings in the form of dealer discounts. Please contact the dealer directly to confirm that the information provided on this page is accurate. Not all original features are included.