2026 GMC Sierra 1500 AT4X

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

2,231 for sale right now

$66,835 – $94,276

View Listings

Specifications

305

Horsepower

495

lb-ft Torque

MPG Combined

Seats

$80k

Base MSRP

Performance

Engine: 3.0L Duramax 3.0L Turbo-Diesel LZ0
Horsepower: 305 hp
Torque: 495 lb-ft
Transmission: 10-Speed Automatic
Drivetrain: 4WD

Fuel & Efficiency

Fuel: Diesel
MPG City: 19 mpg
MPG Highway: 20 mpg
MPG Combined: 19 mpg
Fuel Tank: 24 gal

Dimensions

Length: 232.9″
Width: 81.2″
Height: 78.7″
Wheelbase: 148″
Curb Weight: 5,890 lbs

Body & Practicality

Body Style: Truck
Doors: 4
Seating: 5
Base MSRP: $79,600

Colors

Factory colors on 2026 GMC Sierra 1500 AT4Xs for sale now.

Exterior

Onyx Black(black)81
Summit White(white)72
Sterling(silver)35
Dune(brown)26
Sterling Metallic(silver)25
Coastal Dune(brown)24
White7
Black7
Gray(silver)6
Tan(brown)5

Interior

Obsidian Rush(brown)292
Obsidian Rush Full Grain Leather Front Seat Trim(brown)6
Black (Obsidian Rush)(black)1
Obsidian Rush, Full Grain Leather Front Seat Trim(brown)1

Live Market Data

Computed from active 2026 GMC Sierra 1500 AT4X listings nationwide, updated continuously.

For sale now2,231

Median price$77,308

Average price$78,282

Price range$66,835 – $94,276

Median vs. MSRP−$2,292

Avg. days on market35

Avg. mileage501 mi

New / Used466 / 34

Price Distribution

Price vs. Mileage

Latest AT4X Listings

The newest 2026 GMC Sierra 1500 AT4Xs on the market.

View all 2,231 →

New 2026 GMC Sierra 1500

AT4X

$78,003

MSRP: $84,2907.5% off

10 mi

Est. $1,125/mo*

1 day on market

White

Eynon GMC

Archbald, PA

New 2026 GMC Sierra 1500

AT4X

$78,464

MSRP: $84,7857.5% off

10 mi

Est. $1,132/mo*

1 day on market

Black

Eynon GMC

Archbald, PA

New 2026 GMC Sierra 1500

AT4X

$79,108

MSRP: $84,8506.8% off

3 mi

Est. $1,141/mo*

1 day on market

BlackBlack

Balise Chevrolet GMC

Springfield, MA

New 2026 GMC Sierra 1500

AT4X

$77,535

MSRP: $84,7858.6% off

3 mi

Est. $1,118/mo*

1 day on market

Black

Castle Rock Chevrolet GMC

Castle Rock, CO

New 2026 GMC Sierra 1500

AT4X

$77,296

MSRP: $85,6809.8% off

5 mi

Est. $1,115/mo*

1 day on market

BlackBlack

Mike Maroone Chevrolet Buick GMC Longmont

Longmont, CO

New 2026 GMC Sierra 1500

AT4X

$79,108

MSRP: $84,8506.8% off

3 mi

Est. $1,141/mo*

1 day on market

Black

Balise Chevrolet GMC

Springfield, MA

Used 2026 GMC Sierra 1500

AT4X

$78,187

6,119 mi

Est. $1,128/mo*

1 day on market

RedBlack

Swickard Anchorage

Anchorage, AK

New 2026 GMC Sierra 1500

AT4X

$82,644

MSRP: $85,8943.8% off

0 mi

Est. $1,191/mo*

1 day on market

SilverBrown

Champion Chevrolet GMC,Inc.

Mc Minnville, TN

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The median 2026 GMC Sierra 1500 AT4X lists for $77,308 today.

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Factory Features

Standard equipment from the window sticker, reviewed for accuracy.

Comfort & Convenience

Keyless Open and Remote Start
Wireless phone charging
Dual-zone automatic climate control
Power sunroof
Premium floor liners
MultiPro Tailgate
8 years of OnStar Basics
First scheduled maintenance visit included

Driver Assistance

Adaptive Cruise Control
15" diagonal Head-Up Display
Rear Camera Mirror
HD Surround Vision multi-camera system
In-vehicle Trailering App

Entertainment

13.4" diagonal GMC Premium Infotainment System color touchscreen with Google built-in compatibility
Wireless Apple CarPlay and wireless Android Auto for compatible phones
12-speaker Bose Premium Series audio system
12.3" diagonal digital multicolor Driver Information Center
SiriusXM-capable radio (trial included; subscription sold separately)

Exterior

AEV stamped-steel front bumper with front winch capability
18" painted aluminum wheels with dark painted pockets
33" Goodyear Wrangler Territory mud-terrain tires
GMC MultiPro multi-function tailgate
Spray-on bedliner with GMC logo (high-strength steel cargo bed)
Power-folding, heated outside mirrors
LED cargo area lighting
LED daytime running lamps

Interior

Full-grain leather seating (Obsidian Rush)
16-way power heated and ventilated front seats with massage
Heated front and rear outboard seats
Ventilated front seats
Driver seat and outside mirror memory
Rear 60/40 folding bench seat with storage package
Heated leather-wrapped steering wheel
Power tilt and telescoping steering column
Power sunroof
Dual-zone automatic climate control
Premium floor liners

Mechanical & Performance

Duramax 3.0L Turbo-Diesel engine (standard; 6.2L V8 optional)
10-speed automatic transmission
Crew Cab short box 4WD only
Two-speed Autotrac transfer case
Off-road suspension with factory-installed 2" lift and Multimatic DSSV dampers
Front and rear electronic locking differentials
Underbody skid plates, including AEV stamped boron steel front approach skid plate
Hill Descent Control
StabiliTrak electronic stability control with Trailer Sway Control and Hill Start Assist
Trailering Package
Trailer brake controller
120V bed-mounted power outlet

Safety & Security

GMC Pro Safety suite
Automatic Emergency Braking
Forward Collision Alert
Front Pedestrian Braking
Lane Keep Assist with Lane Departure Warning
Following Distance Indicator
IntelliBeam auto high-beam headlamps
Front and Rear Park Assist
Trailer Side Blind Zone Alert
Rear Cross Traffic Braking
Rear Pedestrian Alert
Safety Alert Seat
HD Surround Vision
Tire Pressure Monitoring System with Tire Fill Alert

Warranty

3-year/36,000-mile bumper-to-bumper limited warranty
5-year/100,000-mile powertrain limited warranty
Roadside Assistance and Courtesy Transportation (5 years/100,000 miles)
First maintenance visit included
8 years OnStar Basics (see OnStar terms)