2020 GMC Sierra 1500 AT4

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

407 for sale right now

$22,333 – $54,995

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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)62
Onyx Black(black)56
Satin Steel Metallic(gray)27
Dark Sky Metallic(gray)16
Red Quartz Tintcoat(red)11
Carbon Black Metallic(black)11
Pacific Blue Metallic(blue)10
White6
Black6
Red3

Interior

Jet Black w/Kalahari Accents(black)123
Jet Black(black)56
Jet Black With Kalahari Accents(black)17
Black8
Jet Black with Kalahari accents(black)7
BLACK1
Jet Black With Kalahari Accents, Perforated Leather-Appointed Fr(black)1
Dark Walnut(brown)1
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 now407

Median price$34,996

Average price$35,162

Price range$22,333 – $54,995

Avg. days on market137

Avg. mileage96,733 mi

New / Used0 / 407

Price Distribution

Price vs. Mileage

Latest AT4 Listings

The newest 2020 GMC Sierra 1500 AT4s on the market.

View all 407 →

Used 2020 GMC Sierra 1500

AT4

$41,925

68,670 mi

Est. $611/mo*

1 day at this dealer

GrayBlack

Southwest INFINITI

Houston, TX

Used 2020 GMC Sierra 1500

AT4

$43,678

43,171 mi

Est. $636/mo*

GrayBlack

Used 2020 GMC Sierra 1500

AT4

$38,873

164 mi

Est. $567/mo*

3 days at this dealer

BlueBlack

Leif Johnson Ford of Austin

Austin, TX

Used 2020 GMC Sierra 1500

AT4

$36,384

103,365 mi

Est. $532/mo*

3 days at this dealer

WhiteBlack

Stivers Ford Lincoln of Montgomery

Montgomery, AL

Used 2020 GMC Sierra 1500

AT4

$32,376

117,285 mi

Est. $475/mo*

3 days at this dealer

BlackBlack

Mid-Illini Auto Group

North Pekin, IL

Used 2020 GMC Sierra 1500

AT4

$36,404

97,746 mi

Est. $532/mo*

3 days at this dealer

BlackBlack

Group 1 Chrysler Dodge Jeep RAM Rockwall

Rockwall, TX

Used 2020 GMC Sierra 1500

AT4

$43,600

73,861 mi

Est. $635/mo*

3 days at this dealer

WhiteBlack

Mac Haik Ford Pasadena

Pasadena, TX

Used 2020 GMC Sierra 1500

AT4

$49,998

53,725 mi

Est. $726/mo*

3 days at this dealer

Summit WhiteBlack

Hi Line Motors

Plano, TX

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The median 2020 GMC Sierra 1500 AT4 lists for $34,996 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