10,999 miles
Backed by Federal Vehicle Title Data
Buy Now
2025 GMC Sierra 2500 AT4X – 6.6L Duramax Turbo-Diesel
6.6L Duramax Turbo-Diesel.
AT4X Crew Cab configuration.
Obsidian Rush interior.
Built for demanding towing and heavy-duty capability.
Key Highlights
13.4" GMC Infotainment System touchscreen
MultiPro Tailgate
Spray-On Bedliner
Premium Floor Liners
16-Way Power Front Bucket Seats
Heated and Ventilated Front Seats
HD Surround Vision
Integrated Trailer Brake Controller
The Experience
The Duramax diesel and Allison 10-speed automatic transmission deliver the kind of confident performance expected from GMC's heavy-duty lineup. Whether towing equipment, hauling cargo, or covering long distances, this configuration is engineered for serious work.
Inside, the cabin combines advanced connectivity with premium appointments. A large touchscreen interface, wireless smartphone integration, and a driver-focused layout create an intuitive environment that supports both daily driving and extended trips.
The AT4X stands apart by blending heavy-duty capability with elevated comfort, advanced safety technologies, and purposeful utility features designed for truck owners who demand more from their vehicle.
Factory Installed Packages & Options
MSRP (Vehicle & Options, Excluding Destination): $94,705
Factory Installed Packages & Options
DURAMAX 6.6L TURBO-DIESEL ENGINE — $9,990
Other Factory Options
Volcanic Red Tintcoat
Gooseneck / 5th Wheel Package
Stamped Bed Holes with Caps
7-Pin Trailer Harness
Hitch Package (Dealer Installed)
Rear Axle 3.42 Ratio
GVWR 11,350 lbs. (5148 kg)
Performance & Capability
Allison 10-Speed Automatic Transmission
2-Speed Autotrac Transfer Case
Traction Select System
Off-Road & Tow/Haul Mode
220-Amp Alternator
Heavy-Duty Air Cleaner
Stabilitrak with Trailer Sway Control
Hill Start Assist
Interior & Comfort
Dual-Zone Automatic Climate Control
Heated Rear Outboard Seats
60/40 Rear Folding Bench Seat
Driver Seat & Mirror Memory
Rear Seat Reminder
Keyless Open and Start
Premium GMC Interior Appointments
Technology & Connectivity
Google Built-In Compatibility
Bluetooth for Most Phones
Wireless Apple CarPlay
Wireless Android Auto
SiriusXM Audio Capability
Wi-Fi Hotspot Capability
Remote Keyless Entry
Exterior & Utility
Power Fold/Extend Heated Trailer Mirrors
LED Fog Lamps
LED Cargo Area Lighting
Red Front Recovery Hooks
Rear Window Defogger
CornerStep Rear Bumper
Animated LED Projector Headlamps
Safety & Driver Assistance
Automatic Emergency Braking
Front and Rear Park Assist
Forward Collision Alert
Following Distance Indicator
Lane Departure Warning
Safety Alert Seat
Rear Cross Traffic Alert
Trailer Side Blind Zone Alert
Why This Spec Matters
The AT4X paired with the Duramax diesel is one of the most desirable heavy-duty Sierra configurations. It combines off-road-focused AT4X capability, premium interior appointments, and the proven towing performance of the Duramax/Allison powertrain, creating a truck that is equally comfortable on the jobsite or on long-distance towing duties.
Properly equipped.
Diesel-powered capability.
A premium heavy-duty truck built to perform.
Services done by TX Auto Group Service: Vehicle Inspected, Oil & Filter Changed, all fluids checked & topped off if needed.
You can always find 50+ high quality photos and a detailed walk around video of each vehicle on our website. The video is conveniently located above the vehicle’s profile image for easy viewing.
At TX Auto Group, we are committed to delivering a superior level of customer service in the automotive industry. With years of experience in vehicle sourcing, buying, and selling, our team carefully selects high-quality vehicles from trusted partners.
Why choose TX Auto Group for your next vehicle?
Transparent, no-haggle pricing
Competitive financing solutions
Multiple extended warranty options at affordable rates
Verified 5-star reviews from satisfied customers
We also provide:
Complimentary CARFAX Vehicle
| Monday | 9:00 am - 7:00 pm |
| Tuesday | 9:00 am - 7:00 pm |
| Wednesday | 9:00 am - 7:00 pm |
| Thursday | 9:00 am - 7:00 pm |
| Friday | 9:00 am - 7:00 pm |
| Saturday | 9:00 am - 6:00 pm |
| Sunday | Closed |
Digitally connect with dealers to answer questions about the virtual buying process, available inventory, financing options and more!
Shop safe! Inspect the details, ask all your questions and experience the benefits of the dealership from a distance with video walkarounds.
Delivery to your doorstep! Find local dealers in your area who will bring your newly purchased and freshly cleaned vehicle directly to you.
Unless prohibited by applicable rules or regulations.
This vehicle may have an open safety recall. Head to the National Highway Traffic Safety Administration (NHTSA) website to perform a quick search.
Some vehicles may be subject to manufacturer safety recalls. See if there are any open safety recalls for this vehicle. This does not include non-safety recalls. Recently announced safety recalls may not yet be posted and there may be a delay between the time a repair is made and before it is reported or posted to the website. Before purchasing, be sure to ask the dealer for an up-to-date status on any recalls.
Check This Vehicle's History, For FREE
Shop confident with Free Vehicle History Reports showing over 70 critical title disclosures. Backed by government data through the NMVTIS, know before you buy with complete reports.
Report Powered by Carsforsale.com & NMVTIS
| Monday | 9:00 am - 7:00 pm |
| Tuesday | 9:00 am - 7:00 pm |
| Wednesday | 9:00 am - 7:00 pm |
| Thursday | 9:00 am - 7:00 pm |
| Friday | 9:00 am - 7:00 pm |
| Saturday | 9:00 am - 6:00 pm |
| Sunday | Closed |
10,999 miles
