2026 GMC Sierra 1500 AT4

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

3,981 for sale right now

$48,995 – $139,199

View Listings

Specifications

MPG Combined

Performance

Engine: 3.0L I6 LZ0
Transmission: Automatic
Drivetrain: 4WD

Fuel & Efficiency

Fuel: Diesel
MPG City: 19 mpg
MPG Highway: 20 mpg
MPG Combined: 19 mpg

Body & Practicality

Body Style: Truck
Doors: 4

Colors

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

Exterior

Summit White(white)92
Onyx Black(black)74
Sterling Metallic(silver)33
Coastal Dune(brown)27
Dune(brown)14
Sterling(silver)13
Black6
Gray(silver)4
White3
Tan(brown)2

Interior

Jet Black w/Kalahari Accents(black)161
Jet Black(brown)80
Jet Black With Kalahari Accents(black)15
Jet Black with Kalahari accents(black)7
Black3
Jet Blk With Kalahari Acc(black)2
Jet Black With Kalahari Accents, Perforated Leather Front Seat T(black)1
Jet Black with Kalahari accents, Perforated leather front seat t(black)1
Jet Black with Kalahari accents, Perforated leathe(brown)1
Jet Black With Kalahari A(black)1

Live Market Data

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

For sale now3,981

Median price$69,087

Average price$69,492

Price range$48,995 – $139,199

Avg. days on market20

Avg. mileage822 mi

New / Used458 / 42

Price Distribution

Price vs. Mileage

Latest AT4 Listings

The newest 2026 GMC Sierra 1500 AT4s on the market.

View all 3,981 →

New 2026 GMC Sierra 1500

AT4

$71,060

MSRP: $77,9348.8% off

5 mi

Est. $1,026/mo*

1 day on market

Black

Todd Wenzel Buick GMC

Grand Rapids, MI

New 2026 GMC Sierra 1500

AT4

$76,314

2 mi

Est. $1,101/mo*

1 day on market

SilverBlack

Kern Motor Company

Winchester, VA

New 2026 GMC Sierra 1500

AT4

$71,060

MSRP: $77,9348.8% off

5 mi

Est. $1,026/mo*

1 day on market

SilverBlack

Todd Wenzel Buick GMC

Grand Rapids, MI

New 2026 GMC Sierra 1500

AT4

$71,060

MSRP: $77,9348.8% off

5 mi

Est. $1,026/mo*

1 day on market

BlackBlack

Todd Wenzel Buick GMC

Grand Rapids, MI

New 2026 GMC Sierra 1500

AT4

$71,060

MSRP: $77,9348.8% off

5 mi

Est. $1,026/mo*

1 day on market

BlackBlack

Todd Wenzel Buick GMC

Grand Rapids, MI

New 2026 GMC Sierra 1500

AT4

$75,819

2 mi

Est. $1,094/mo*

1 day on market

WhiteBlack

Kern Motor Company

Winchester, VA

New 2026 GMC Sierra 1500

AT4

$71,060

MSRP: $77,9348.8% off

5 mi

Est. $1,026/mo*

1 day on market

SilverBlack

Todd Wenzel Buick GMC

Grand Rapids, MI

New 2026 GMC Sierra 1500

AT4

$76,049

0 mi

Est. $1,097/mo*

1 day on market

WhiteBlack

Vance Country Ford

Guthrie, OK

What's Yours

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The median 2026 GMC Sierra 1500 AT4 lists for $69,087 today.

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Factory Features

Standard equipment from the window sticker, reviewed for accuracy.

Comfort & Convenience

Keyless Open and remote start
Dual-zone climate control
Heated front and rear outboard seats
Ventilated front seats
Heated wrapped steering wheel
Power steering column
Driver seat and mirror memory
10-way power front seats
Premium floor liners
120V power outlets (cabin and bed)

Driver Assistance

Adaptive Cruise Control
Automatic Emergency Braking
Forward Collision Alert
Front Pedestrian Braking
Lane Keep Assist with Lane Departure Warning
Following Distance Indicator
IntelliBeam auto high-beam headlamps
Safety Alert Seat
Hill Descent Control
Trailer brake controller
Trailering Package

Entertainment

13.4-inch diagonal color touchscreen GMC Premium Infotainment System with Google built-in compatibility
Wireless Apple CarPlay for compatible phones
Wireless Android Auto for compatible phones
12.3-inch diagonal digital Driver Information Center
Bose premium sound system
SiriusXM radio capable (trial included; subscription sold separately)
OnStar Basics (8 years; see OnStar.com for terms)

Exterior

GMC MultiPro tailgate
Spray-on bedliner
LED cargo area lighting
LED fog lamps
Power-folding and heated outside mirrors
Rain-sensing wipers
Front recovery hooks
All-terrain tires
Dual exhaust with premium tips

Interior

Jet Black interior with Kalahari accents
Perforated front leather seating surfaces
10-way power front bucket seats
Heated front and rear outboard seats
Ventilated front seats
Rear 60/40 folding bench seat with storage package
Driver seat and outside-mirror memory
Power steering column
Wrapped and heated steering wheel
Dual-zone climate control
Premium floor liners

Mechanical & Performance

Duramax 3.0L turbo-diesel engine (standard on AT4; 6.2L V8 available)
10-speed automatic transmission
Crew Cab 4WD configuration
2-speed AutoTrac transfer case
Auto-locking rear differential
3.23 rear axle ratio (included)
Off-road suspension with 2-inch factory lift and monotube shocks
Skid plates
Hill Descent Control
All-terrain tires
StabiliTrak with Trailer Sway Control and Hill Start Assist
Trailering Package
Trailer brake controller
120V bed and instrument-panel power outlets
Dual exhaust with premium tips

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
Safety Alert Seat
Tire Pressure Monitoring System with Tire Fill Alert
StabiliTrak electronic stability control with Trailer Sway Control and Hill Start Assist
8 years of OnStar Basics (see OnStar.com for terms)

Warranty

3-year/36,000-mile bumper-to-bumper limited warranty (whichever comes first)
5-year/100,000-mile powertrain limited warranty (Duramax diesel; whichever comes first)
5-year/100,000-mile Roadside Assistance
5-year/100,000-mile Courtesy Transportation
First maintenance visit included (see gmc.com or dealer for terms, details, and limits)