2026 GMC Sierra 1500 AT4

Specifications, live market data, colors, and factory features.

5,010 for sale right now

$55,222 – $112,223

View Listings

Specifications

305

Horsepower

495

lb-ft Torque

MPG Combined

Seats

$67k

Base MSRP

Performance

Engine: 6.2L 6.2L Ecotec3 V8 L87
Horsepower: 305 hp
Torque: 495 lb-ft
Drivetrain: 4WD

Fuel & Efficiency

Fuel: Gasoline
MPG City: 22 mpg
MPG Highway: 26 mpg
MPG Combined: 24 mpg
Fuel Tank: 24 gal

Dimensions

Length: 232.9″
Width: 81.2″
Height: 78.4″
Wheelbase: 148″
Curb Weight: 5,500 lbs

Body & Practicality

Body Style: Truck
Doors: 4
Seating: 5
Base MSRP: $67,000

Colors

Factory colors on 2026 GMC Sierra 1500 AT4s for sale now.

Exterior

Summit White(white)90
Onyx Black(black)76
Sterling Metallic(silver)46
Sterling(silver)31
Coastal Dune(brown)29
Dune(brown)29
Black11
White9
Tan(brown)6
Gray5

Interior

Jet Black w/Kalahari Accents(black)162
Jet Black(black)160
Jet Black With Kalahari Accents(black)19
Jet Black with Kalahari accents(black)5
Black2
Hvd(black)1
Jet Black with Kalahari accents, Perforated leathe(black)1

Live Market Data

Computed from active 2026 GMC Sierra 1500 AT4 listings nationwide, updated continuously.

For sale now5,010

Median price$68,482

Average price$68,451

Price range$55,222 – $112,223

Median vs. MSRP+$1,482

Avg. days on market30

Avg. mileage1,490 mi

New / Used440 / 60

Price Distribution

Price vs. Mileage

Latest AT4 Listings

The newest 2026 GMC Sierra 1500 AT4s on the market.

View all 5,010 →

Used 2026 GMC Sierra 1500

AT4

$65,995

1,794 mi

Est. $954/mo*

2 days at this dealer

Summit WhiteBlack

El Dorado Chevrolet

McKinney, TX

New 2026 GMC Sierra 1500

AT4

$71,388

MSRP: $77,4257.8% off

MSRP: $66,8002.4% off

7 mi

Est. $943/mo*

2 days at this dealer

Summit WhiteJet Black

Laura Buick GMC

Collinsville, IL

New 2026 GMC Sierra 1500

AT4

$65,650

MSRP: $66,8001.7% off

7 mi

Est. $949/mo*

2 days at this dealer

SterlingJet Black

Laura Buick GMC

Collinsville, IL

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The median 2026 GMC Sierra 1500 AT4 lists for $68,482 today.

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Factory Features

Standard equipment from the window sticker, reviewed for accuracy.

Comfort & Convenience

Keyless Open and Start with remote keyless entry
Remote vehicle starter system
Power door locks
Power windows: driver and front passenger express up/down; rear express down
Rear-window electric defogger
Wireless phone charging
Interior 120-volt power outlet
Bed-mounted 120-volt power outlet
USB charge/data ports in center console
Additional USB ports on console
Rear charge-only USB ports

Driver Assistance

Automatic Emergency Braking
Front Pedestrian Braking
Forward Collision Alert
Following Distance Indicator
Lane Keep Assist with Lane Departure Warning
IntelliBeam automatic high beams
Adaptive Cruise Control
Front and Rear Park Assist (ultrasonic)
HD Surround Vision with front camera washer
Rear Cross Traffic Braking
Rear Pedestrian Alert
Safety Alert Seat
Trailer Side Blind Zone Alert
Hitch Guidance and Hitch View

Entertainment

13.4-inch diagonal Premium GMC Infotainment System with Google built-in (navigation and voice assistance), multicolor multi-touch display, AM/FM
12.3-inch enhanced reconfigurable multicolor Driver Information Center
Bose premium 7-speaker sound system with Richbass woofer
Wireless Apple CarPlay and Wireless Android Auto
Bluetooth phone and audio streaming
Steering wheel audio controls
Wi-Fi hotspot capable
SiriusXM with 360L trial subscription

Exterior

Crew Cab 4WD configuration (short or standard bed)
Body-color front and rear bumpers
CornerStep rear bumper
Body-color door handles
High-gloss black mirror caps
AT4 grille with high-gloss black accents
LED projector headlamps with fade-on/fade-off animation, LED turn signals, and LED daytime running lamps
IntelliBeam automatic high-beam headlamps
LED signature taillamps with LED stop/turn/reverse and fade-on/fade-off animation
LED fog lamps
Perimeter lighting
Heated, power-adjustable, power-folding outside mirrors with driver-side auto-dimming, puddle lamps, side perimeter lighting, and memory
Deep-tinted glass
Front rain-sensing wipers
GMC MultiPro six-function tailgate
Tailgate EZ Lift with power lock and release; hitch-area light
Tailgate and bed-rail top protection caps
Spray-on bedliner with GMC logo
LED cargo-area bed lighting
Cab-mounted cargo-area lamps integrated with center high-mount stop lamp
Rear wheelhouse liners
20-inch x 9-inch machined aluminum wheels with Carbon Grey Metallic accents
275/60R20SL all-terrain blackwall tires
17-inch full-size steel spare wheel
255/80R17SL all-season blackwall spare tire
Keyed spare tire carrier lock

Interior

Jet Black interior with Kalahari accents
Perforated leather front seat trim
Front bucket seats with floor-mounted center console
10-way power driver and front-passenger seats including power lumbar
Heated driver and front outboard passenger seats
Ventilated driver and front passenger seats
Heated second-row outboard seats
Up-level rear seat with Storage Package: 60/40 folding bench, seatback storage, center fold-out armrest with cupholders, full-width under-seat storage
Driver memory for power driver seat and outside mirrors
Heated wrapped steering wheel
Power rake-and-telescoping steering column
Dual-zone automatic climate control
Rear air vents
Auto-dimming inside rearview mirror
Color-keyed carpeting
Premium front and rear floor liners with removable carpet inserts
Center console with cup holders, phone storage, power-cord management, and hanging-file capability
Assist handles (front A-pillar and rear B-pillar)
Exterior temperature display
Compass in instrument cluster

Mechanical & Performance

Duramax 3.0L Turbo-Diesel I6 (305 hp / 495 lb-ft) standard engine
10-speed automatic transmission with Electronic Precision Shift and steering-column paddle shifters
Four-wheel drive
Two-speed electronic Autotrac transfer case with push-button control
Off-road suspension with 2-inch factory-installed lift and Rancho monotube shocks
Auto-locking rear differential
Hill Descent Control
Underbody skid plates
Heavy-duty air filter
Trailering Package (trailer hitch, 7-pin and 4-pin connectors, Hitch Guidance)
Integrated trailer brake controller
In-Vehicle Trailering App (checklist, maintenance reminders, security alerts, mileage, tow/haul reminder, electrical diagnostics)
Hitch View (pan/zoom/tilt image adjustment)
Trailer camera provisions and trailer viewing software
4-wheel antilock disc brakes with Duralife rotors
Electric power-assisted rack-and-pinion steering
Automatic Stop/Start
Push-button start
Heavy-duty 850-CCA / 95 Amp-hr battery with rundown protection and retained accessory power
220-amp alternator
Capless fuel fill
Brake lining wear indicator
Dual exhaust system; aluminized stainless-steel muffler and tailpipe
Fully boxed frame with hydroformed front section
Fixed cargo tie-downs
3.23 rear axle ratio
Red front recovery hooks

Safety & Security

GMC Pro Safety suite
Dual-stage frontal airbags (driver and front outboard passenger)
Seat-mounted side-impact airbags (driver and front outboard passenger)
Head-curtain airbags for front and rear outboard seating positions
Front outboard passenger sensing system
StabiliTrak electronic stability control with Proactive Roll Avoidance and traction control
Electronic trailer sway control
Hill start assist
Tire Pressure Monitoring System with auto-learn and Tire Fill Alert
Rear Seat Belt Indicator
Rear Seat Reminder
Buckle to Drive
Seat belt adjustable guide loops (front row)
Theft-deterrent system (unauthorized entry)
Electrical steering column lock
OnStar services capable; OnStar Basics (remote commands, built-in voice assistance, real-time traffic/navigation, Automatic Crash Response)

Warranty

Basic limited warranty: 3 years / 36,000 miles
Powertrain (drivetrain) limited warranty: 5 years / 60,000 miles
Corrosion warranty: 3 years / 100,000 miles
Roadside Assistance: 5 years / 60,000 miles