2026 GMC Sierra 2500 AT4X
Specifications, live market data, colors, and factory features.
1,662 for sale right now
$75,335 – $112,345
Specifications
401
Horsepower
464
lb-ft Torque
5
Seats
$85k
Base MSRP
Performance
- Engine
- 6.6L V8 L5P
- Horsepower
- 401 hp
- Torque
- 464 lb-ft
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
Fuel & Efficiency
- Fuel
- Diesel
- MPG City
- 0 mpg
- MPG Highway
- 0 mpg
- Fuel Tank
- 36 gal
Dimensions
- Length
- 250.8″
- Width
- 81.9″
- Height
- 82.7″
- Wheelbase
- 159″
- Curb Weight
- 7,502 lbs
Body & Practicality
- Body Style
- Truck
- Doors
- 4
- Seating
- 5
- Base MSRP
- $85,200
Colors
Factory colors on 2026 GMC Sierra 2500 AT4Xs for sale now.
Exterior
- Onyx Black(black)46
- Summit White(white)36
- Sterling Metallic(gray)18
- Sterling(silver)15
- Coastal Dune(brown)12
- Dune(brown)12
- Volcanic Red Tintcoat(red)6
- Volcanic Red(red)6
- Titanium Rush Metallic(silver)6
- White3
Interior
- Obsidian Rush(black)172
- Obsidian Rush, Full Grain Leather Seat Trim(black)2
- Obsidian Rush Full Grain Leather Seat Trim(blue)2
- H9j(black)1
Live Market Data
Computed from active 2026 GMC Sierra 2500 AT4X listings nationwide, updated continuously.
For sale now1,662
Median price$93,030
Average price$93,397
Price range$75,335 – $112,345
Median vs. MSRP+$7,830
Avg. days on market30
Avg. mileage811 mi
New / Used465 / 35
Price Distribution
Price vs. Mileage
Latest AT4X Listings
The newest 2026 GMC Sierra 2500 AT4Xs on the market.
View New 2026 GMC Sierra 2500 listing
0 mi
New 2026 GMC Sierra 2500
AT4X
$98,960
Est. $1,424/mo*
2 days at this dealer
BlackObsidian Rush
Bob Brown Buick GMC
Ankeny, IA
View New 2026 GMC Sierra 2500 listing
0 mi
New 2026 GMC Sierra 2500
AT4X
$90,537
Est. $1,304/mo*
3 days at this dealer
RedObsidian Rush
Rivard Buick GMC
TAMPA, FL
View New 2026 GMC Sierra 2500 listing
3 mi
New 2026 GMC Sierra 2500
AT4X
$83,481
MSRP: $88,5255.7% off
Est. $1,203/mo*
4 days at this dealer
Black
Toliver Buick GMC
Mt Pleasant, TX
View New 2026 GMC Sierra 2500 listing
3 mi
New 2026 GMC Sierra 2500
AT4X
$99,639
Est. $1,433/mo*
4 days at this dealer
BlackBlue
Bishop GMC of Clare
Clare, MI
View New 2026 GMC Sierra 2500 listing
5 mi
New 2026 GMC Sierra 2500
AT4X
$80,710
MSRP: $89,4859.8% off
Est. $1,164/mo*
4 days at this dealer
WhiteBlack
Reliance Bay City
Bay City, TX
View New 2026 GMC Sierra 2500 listing
0 mi
New 2026 GMC Sierra 2500
AT4X
$91,574
MSRP: $99,3257.8% off
Est. $1,318/mo*
4 days at this dealer
BlackBlue
Howard Bentley Buick GMC
Albertville, AL
View New 2026 GMC Sierra 2500 listing
0 mi
New 2026 GMC Sierra 2500
AT4X
$91,574
MSRP: $99,3257.8% off
Est. $1,318/mo*
4 days at this dealer
BlackBlue
Howard Bentley Buick GMC
Albertville, AL
What's Yours
Worth?
The median 2026 GMC Sierra 2500 AT4X lists for $93,030 today.
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Factory Features
Standard equipment from the window sticker, reviewed for accuracy.
Comfort & Convenience
- Keyless Open and Start (push-button start)
- Remote vehicle starter system
- Universal Home Remote (3-channel)
- Power door locks with lockout protection
- Power windows with driver and front-passenger express-up/down; rear express-down
- Power sliding rear window with defogger
- Electric rear-window defogger
- 120-volt instrument-panel and bed-mounted power outlets
- Multiple USB data/charge ports (console, center console interior, rear of console)
- Compass and outside temperature display
- Rain-sensing wipers
- Power-retractable running boards
- 8 years OnStar Basics (terms apply)
Driver Assistance
- Adaptive Cruise Control with trailering capability
- HD Surround Vision with multiple selectable camera views
- HD Rear Vision Camera
- Hitch Guidance with Hitch View
- Bed View Camera with trailer camera provisions
- Rear Camera Mirror
- Front and rear park assist
- Trailer Side Blind Zone Alert
- Rear Cross Traffic Alert
- Lane Departure Warning
- Following Distance Indicator
- Automatic Emergency Braking and Front Pedestrian Braking
Entertainment
- 13.4 in diagonal Premium GMC Infotainment System with Google built-in (navigation and voice assistance apps)
- Multi-touch color display; AM/FM
- Wireless Apple CarPlay and Wireless Android Auto for compatible phones
- Bluetooth streaming audio and hands-free phone
- Bose Premium Series 12-speaker audio system
- SiriusXM with 360L trial subscription
- Wi-Fi hotspot capable (OnStar; terms apply)
- Voice-activated phone and system controls
- Steering-wheel-mounted audio controls
Exterior
- 18 in machined aluminum wheels with high-gloss black accents
- 35 in LT305/70R18 Goodyear Territory MT tires with matching spare
- Spare tire carrier lock
- Body-color front and rear bumpers with CornerStep rear bumper
- GMC MultiPro six-function tailgate with EZ Lift, power lock/release, and hitch-area lighting
- Spray-on bedliner with GMC logo
- Power-folding/extending heated auto-dimming vertical trailering mirrors with high-gloss black caps, turn signals, puddle lamps, and perimeter lighting
- Animated LED projector headlamps with LED turn signals and signature LED daytime running lamps
- Animated LED signature taillamps
- LED fog lamps
- LED cargo-area lighting
- Smoked amber LED roof marker lamps
- IntelliBeam auto high-beam assist
- Power sunroof (tilt/slide, express open/close)
- Black power-retractable assist steps with LED perimeter lighting
- Deep-tinted glass
- Rainsense automatic windshield wipers
- Rear wheelhouse liners
- Gloss-black header grille and grille insert bars with dark nickel inserts
- Black beltline moldings; AT4X exterior badging
- 12 fixed cargo bed tie-downs (500 lb per corner rating)
- Side bed steps (integrated forward bed steps)
Interior
- Obsidian Rush interior with full-grain leather seating, technical-grain leather accents, and authentic Vanta ash wood
- 16-way power heated and ventilated front bucket seats with power lumbar and massage
- Driver seat and outside-mirror memory
- Heated rear outboard seats
- 60/40 split-folding rear bench seat with underseat storage package
- Dual-zone automatic climate control with rear air vents
- Premium front and rear floor liners with removable carpet inserts
- Leather-wrapped heated steering wheel with audio/phone controls
- Manual tilt-and-telescoping steering column
- 12.3 in diagonal multicolor Driver Information Center
- 15 in multicolor Head-Up Display (includes off-road inclinometer)
- Inside rearview auto-dimming Rear Camera Mirror
- Floor-mounted center console with cupholders, phone storage, and power-cord management
- Carpeted floor covering color-keyed to interior
- Illuminated vanity mirrors; front and rear assist handles
- Wireless smartphone charging
Mechanical & Performance
- 6.6L V8 gasoline engine (401 hp / 464 lb-ft) — standard; Duramax 6.6L turbo-diesel optional
- Allison 10-speed automatic transmission
- 4WD only with Autotrac 2-speed transfer case (2HI / Auto / 4HI / 4LO)
- Factory-installed 1.5 in off-road suspension lift with Multimatic DSSV dampers
- Driver-selectable rear electronic-locking differential
- Traction Select System with Off-Road and Tow-Haul modes
- Hill Descent Control and Hill Start Assist
- StabiliTrak electronic stability control with Trailer Sway Control
- Digital Variable Steering Assist
- Trailering Package with 2.5 in receiver hitch platform (2 in insert), 4- and 7-pin connectors
- Integrated trailer brake controller
- In-vehicle Trailering App
- ProGrade trailering capability including Hitch Guidance with Hitch View
- Heavy-duty air cleaner
- 170-amp alternator (gas); heavy-duty battery
- 120-volt power outlets (instrument panel and cargo bed)
- Front aluminum skid plate and larger steel transfer-case skid plate
- Fully boxed high-strength steel frame; roll-formed high-strength steel bed
- 4-wheel antilock disc brakes with DuraLife rotors and brake-pad wear indicator
- Red front recovery hooks
- Available max trailering up to 18,500 lbs (properly equipped)
Safety & Security
- Sierra HD Pro Safety suite: Forward Collision Alert, Following Distance Indicator, Front Pedestrian Braking, IntelliBeam, Lane Departure Warning, Buckle to Drive, Automatic Emergency Braking
- 6 airbags (dual-stage front, front seat-mounted side-impact, head-curtain for outboard positions) with Passenger Sensing System
- StabiliTrak with traction control
- Safety Alert Seat
- Teen Driver mode
- Rear Cross Traffic Alert
- HD Surround Vision
- Ultrasonic front and rear park assist
- Trailer Side Blind Zone Alert
- Tire Pressure Monitoring System with Tire Fill Alert
- Unauthorized-entry theft-deterrent system / alarm
- Rear Seat Reminder
- OnStar safety and security services (Automatic Crash Response and related core services per plan)
Warranty
- Bumper-to-bumper limited warranty: 3 years / 36,000 miles (whichever comes first)
- Powertrain limited warranty: 5 years / 60,000 miles on gas (5 years / 100,000 miles when equipped with Duramax diesel)
- Roadside Assistance and Courtesy Transportation: 5 years / 60,000 miles on gas (5 years / 100,000 miles with Duramax diesel)
- First scheduled maintenance visit included
- Corrosion coverage: 3 years / 36,000 miles; rust-through 6 years / 100,000 miles (GM standard coverage)