2020 GMC Sierra 1500 AT4

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

363 for sale right now

$22,898 – $58,890

View Listings

Specifications

MPG Combined

Performance

Engine: 6.2L V-Shaped L87 - DI DFM, ALUM, GEN 5
Transmission: Automatic
Drivetrain: 4WD

Fuel & Efficiency

Fuel: Gasoline
MPG City: 15 mpg
MPG Highway: 19 mpg
MPG Combined: 17 mpg

Body & Practicality

Body Style: Truck
Doors: 4

Colors

Factory colors on 2020 GMC Sierra 1500 AT4s for sale now.

Exterior

Summit White(white)45
Onyx Black(black)45
Satin Steel Metallic(gray)24
White14
Dark Sky Metallic(gray)13
Pacific Blue Metallic(blue)10
Red Quartz Tintcoat(red)7
Carbon Black Metallic(black)6
Black4
Smokey Quartz Metallic3

Interior

Jet Black w/Kalahari Accents(black)100
Jet Black(black)45
Jet Black With Kalahari Accents(black)14
Black7
Jet Black with Kalahari accents(black)6
Jet Black With Kalahari Accents, Perforated Leather-Appointed Fr(black)1
Dark Walnut(brown)1
BLACK1
Matte Black(black)1
Jet Black with Kalahari accents, Perforated leathe(black)1

Live Market Data

Computed from active 2020 GMC Sierra 1500 AT4 listings nationwide, updated continuously.

For sale now363

Median price$35,687

Average price$35,818

Price range$22,898 – $58,890

Avg. days on market47

Avg. mileage95,314 mi

New / Used0 / 363

Price Distribution

Price vs. Mileage

Latest AT4 Listings

The newest 2020 GMC Sierra 1500 AT4s on the market.

View all 363 →

Used 2020 GMC Sierra 1500

AT4

$40,368

57,354 mi

Est. $589/mo*

1 day on market

BlackBlack

Brickell Chrysler Dodge Jeep RAM

Miami, FL

Used 2020 GMC Sierra 1500

AT4

$35,686

92,596 mi

Est. $522/mo*

1 day on market

WhiteBlack

Dan Cummins Chevrolet Buick of Paris

Paris, KY

Used 2020 GMC Sierra 1500

AT4

$36,676

97,615 mi

Est. $536/mo*

1 day on market

BlueBlack

Gwatney Chevrolet

Jacksonville, AR

Used 2020 GMC Sierra 1500

AT4

$39,180

98,050 mi

Est. $572/mo*

1 day on market

BlackBlack

Gregg Young Buick GMC

Indianola, IA

Used 2020 GMC Sierra 1500

AT4

$43,875

73,212 mi

Est. $639/mo*

1 day on market

Octane GMC of Santa Fe

Santa Fe, NM

Used 2020 GMC Sierra 1500

AT4

$39,689

98,603 mi

Est. $579/mo*

1 day on market

BlackBlack

Mark Dodge

Lake Charles, LA

Used 2020 GMC Sierra 1500

AT4

$33,993

100,751 mi

Est. $498/mo*

1 day on market

BlackBlack

Bill Harris Chrysler Jeep Dodge

Ashland, OH

Used 2020 GMC Sierra 1500

AT4

$32,937

154,409 mi

Est. $483/mo*

1 day on market

GrayBlack

Hendrick Chevrolet Hoover

Hoover, AL

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The median 2020 GMC Sierra 1500 AT4 lists for $35,687 today.

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Factory Features

Standard equipment from the window sticker, reviewed for accuracy.

Comfort & Convenience

Dual-zone automatic climate control
Remote vehicle starter system; Keyless Open and Start
Heated and ventilated front seats
Power windows and locks; rear defogger
Universal Home Remote, rear sliding power window, wireless charging, and Bose are AT4 Preferred Package, not base

Driver Assistance

HD Rear Vision Camera; Hitch Guidance
Hill Descent Control
Electronic cruise control (Adaptive Cruise Control is Driver Alert Package II, not base)
Forward Collision Alert, Lane Keep Assist, Automatic Emergency Braking, and IntelliBeam are Driver Alert Package II, not AT4 base

Entertainment

Premium GMC Infotainment 8-inch color touchscreen with multi-touch, AM/FM, Bluetooth (navigation 8-inch is Preferred Package)
Apple CarPlay and Android Auto
6-speaker audio (Bose is Preferred Package)
SiriusXM trial; USB ports; Wi-Fi hotspot capable

Exterior

18-inch wheels with Dark Grey accents; 265/65R18SL all-season (Goodyear DuraTrac MT is AT4 Premium/package)
Black-chrome exterior accents; red vertical recovery hooks
LED signature daytime running lamps; LED headlamps as AT4 content
GMC MultiPro six-function tailgate
Spray-on bedliner with AT4 logo
Integrated dual exhaust
6-inch assist steps are AT4 Preferred/Premium package, not base

Interior

Jet Black leather-appointed seating with exclusive Kalahari accents
Heated and ventilated front seats; heated rear outboard seats on Crew Cab
Dual-zone automatic climate control
4.2-inch diagonal color Driver Information Center (8-inch DIC is Technology package)
Leather-wrapped / heated steering wheel as AT4 content
Push-button start

Mechanical & Performance

5.3L EcoTec3 V8 standard (355 hp @ 5,600 rpm / 383 lb-ft @ 4,100 rpm); 6.2L V8 or 3.0L Duramax available
10-speed automatic electronically controlled with Tow/Haul (standard with 5.3L on AT4)
4WD standard; 2-speed Autotrac transfer case with low range
2-inch factory suspension lift; Rancho monotube shocks; automatic locking rear differential; metal skid plates
Hill Descent Control; Traction Select with Off-Road mode
Trailering Package: hitch, 7-pin and 4-pin, Hitch Guidance
4-wheel antilock disc brakes; StabiliTrak with trailer sway control

Safety & Security

StabiliTrak with Proactive Roll Avoidance and traction control; electronic trailer sway control
6 airbags; Passenger Sensing System
HD Rear Vision Camera; Hitch Guidance
Tire Pressure Monitoring System with Tire Fill Alert
Teen Driver; OnStar capable
Driver Alert Package I/II (blind-spot, AEB, LKA) are packages, not AT4 base — omitted as standard

Warranty

3-year/36,000-mile Bumper-to-Bumper Limited Warranty
5-year/60,000-mile Powertrain Limited Warranty
3-year/36,000-mile cosmetic corrosion; 6-year/100,000-mile rust-through
5-year/60,000-mile 24/7 Roadside Assistance and Courtesy Transportation