Home / New vehicles / GMC / Sierra 2500HD
2026 GMC Sierra 2500HD AT4
VIN 1GT4UPEY9TF337555 · Stock TF337555
Details
- Engine
- 6.6L V8 diesel
- Transmission
- 10-speed automatic
- Drivetrain
- 4WD
- Engine
- Duramax 6.6L V8 Turbodiesel
- Body
- 4D Crew Cab
- Exterior
- Sterling Metallic
- Interior
- Jet Black With Kalahari Accents
- Fuel
- Diesel
Equipment 153
Packages
- AT4 Preferred Package
- AT4 Premium Plus Package
- Black Badging Package
- Gooseneck/5th Wheel Prep Package
3 more
- Preferred Equipment Group 4SB
- Technology Package
- X31 Off-Road Package
Safety
- Emergency communication system: OnStar
- Lane Departure Warning System
- Security system
- Unauthorized Entry Theft-Deterrent System
21 more
- Automatic Emergency Braking
- Buckle to Drive
- Following Distance Indicator
- Forward Collision Alert
- Front Pedestrian Braking
- HD Surround Vision
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Rear Cross Traffic Alert
- Ultrasonic Front and Rear Park Assist
- Safety Alert Seat
- Traction control
- 4-Wheel Disc Brakes
- ABS brakes
- Dual front impact airbags
- Dual front side impact airbags
- Low tire pressure warning
- Occupant sensing airbag
- Overhead airbag
- Brake assist
- Electronic Stability Control
- Panic alarm
Technology
- 3 Years SiriusXM
- 7 Speakers
- AM/FM radio: SiriusXM with 360L
- Bose Premium 7-Speaker Sound System
15 more
- 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
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- 2 Charge-Only Rear USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- 2 USB Ports
- Apple CarPlay/Android Auto
- Multicolor 15" Diagonal Head-Up Display
- OnStar Services Capable
- Wireless Charging
- Wireless Phone Projection
- Steering wheel mounted audio controls
Interior
- Automatic temperature control
- Electric Rear-Window Defogger
- Front dual zone A/C
- Rear window defroster
50 more
- Driver Memory
- Memory seat
- Power driver seat
- Push Button Start
- Remote Vehicle Starter System
- Universal Home Remote
- Manual Tilt-Wheel/Telescoping Steering Column
- Keyless Open and Start
- Power Sunroof
- LED Cargo Area Lighting
- Auto-dimming Rear-View mirror
- Floor-Mounted Center Console
- Front Premium Floor Liners with Removable Carpet Insert
- Heated steering wheel
- Rear Premium Floor Liners with Removable Carpet Insert
- Rear reading lights
- Rear seat center armrest
- Voltmeter
- 10-Way Power Driver Seat Adjuster with Lumbar
- 10-Way Power Passenger Seat Adjuster with Lumbar
- 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
- Ventilated Driver and Front Passenger Seats
- Ventilated front seats
- Power Front Passenger Windows with Express Up/Down
- Power Sliding Rear Window with Defogger
- Air Conditioning
- Power windows
- Remote keyless entry
- Speed control
- Compass
- Driver door bin
- Driver vanity mirror
- Front reading lights
- Illuminated entry
- Outside temperature display
- Overhead console
- Passenger vanity mirror
- Tachometer
- Telescoping steering wheel
- Tilt steering wheel
- Trip computer
- Front Bucket Seats
- Split folding rear seat
- Passenger door bin
Exterior
- Pickup Box
- Auto High-beam Headlights
- Front fog lights
- Auto-dimming door mirrors
27 more
- Black GMC Emblems
- Black Sierra Nameplates
- Body Color Wheel Arch Moldings
- Bumpers: body-color
- Front License Plate Kit
- Gloss Black Header Grille and Grille Insert Bars
- GMC MultiPro Tailgate Step Lights
- IntelliBeam Automatic High Beam on/Off
- LED Smoked Amber Roof Marker Lamps
- Off-Road High Clearance Step
- Rear step bumper
- Rear Wheelhouse Liners
- Spray-on Pickup Bedliner with GMC Logo
- Turn signal indicator mirrors
- Winter Grille Cover
- Hard Folding Truck Bed Cover
- Black Lug Nut & Wheel Lock Kit
- Wheels: 20" High Gloss Black 8 Spokes Aluminum
- Deep-Tinted Glass
- Front Rain-Sensing Wipers
- Rain sensing wipers
- Delay-off headlights
- Fully automatic headlights
- Heated door mirrors
- Power door mirrors
- Alloy wheels
- Variably intermittent wipers
Mechanical
- Off-Road Suspension
- Speed-sensing steering
- Front wheel independent suspension
- Hill Descent Control
13 more
- 2-Speed Active Transfer Case
- 220-Amp Alternator
- Engine Block Heater
- Exhaust Brake
- Heavy-Duty 80 Amp Battery
- Bed View Camera with Two Trailer Camera Provisions
- Trailer Cam Provisions and Trailer Viewing Software
- Trailer Side Blind Zone Alert
- Upfitter Switch Kit (5)
- Hitch Guidance with Hitch View
- in-Vehicle Trailering System App
- Power steering
- Front anti-roll bar
From the store
Call us at 512-954-9290
This 2026 GMC Sierra 2500HD AT4 in Sterling Metallic Gray represents serious capability with refined comfort. The Duramax 6.6L V8 Turbodiesel engine delivers 470 horsepower and 975 lb-ft of torque, paired with a 10-speed automatic transmission and 4WD to handle demanding work and challenging terrain.
- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft torque
- Gooseneck/5th Wheel Prep Package for towing flexibility
- AT4 Premium Plus Package with power sunroof
- Hard Folding Truck Bed Cover by RealTruck Advantage
- 220-Amp Alternator and Engine Block Heater
- Off-Road Suspension with 2-Speed Active Transfer Case
- Multicolor 15" Head-Up Display
- Bed View Camera with Trailer Camera Provisions
- HD Surround Vision with Rear Cross Traffic Alert
- Heated and Ventilated Front Seats with Leather Trim
- Power Sunroof
- Bose Premium 7-Speaker Sound System with SiriusXM
- Wireless Phone Projection and Wireless Charging
- GMC MultiPro Tailgate Step Lights
- Black Badging Package with Gloss Black Grille
The AT4 Premium Plus Package elevates this truck with a power sunroof, advanced Technology Package features, and the iconic AT4 high clearance step. The exterior includes body-color wheel arch moldings, black GMC emblems, and black Sierra nameplates for a cohesive, premium appearance. A hard folding bed cover protects your cargo while maintaining the truck's sleek profile.
Inside, the cabin balances work capability with passenger comfort. The perforated leather-appointed front seats heat and ventilate for year-round comfort, while the heated steering wheel adds another layer of refinement. A floor-mounted center console with wireless charging and dual USB charging ports keeps your devices ready. The multicolor head-up display projects essential driving information directly into your sightline for enhanced awareness on and off the road.
Trailering becomes intuitive with the bed view camera system, trailer camera provisions, hitch guidance with hitch view, and the in-vehicle trailering app. Ultrasonic front and rear park assist, hill descent control, and automatic emergency braking provide confidence during complex maneuvers. The gooseneck or 5th wheel prep package includes a hitch platform and bed-mounted 7-pin trailer harness for serious towing applications.
This Sierra includes three years of SiriusXM satellite radio service with the 360L trial subscription, OnStar services capability, and an emergency communication system. The upfitter switch kit provides configurable electrical circuits for aftermarket accessories, supporting whatever specialized equipment your work demands.
With its powerful turbodiesel engine, comprehensive technology suite, and purposeful design, this 2026 Sierra 2500HD AT4 stands ready for work and weekend adventures alike. Contact our team to schedule a test drive and experience this truck's commanding presence and refined capability firsthand.
Call us at 512-954-9290 Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026 $2500 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026
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