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  • Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4

    $34,646

    85,450 mi.
    Est. $651/mo

    Luther Brookdale Chevrolet

    4.5
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    BROOKLYN CENTER, MN (361 mi)

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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $36,012

    $300
    82,611 mi.
    Est. $677/mo

    O'Brien Nissan of Bloomington

    4.9
    Check Availability
    Bloomington, IL (121 mi)

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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $35,125

    103,943 mi.
    Est. $660/mo

    Arnie Bauer Buick GMC of Matteson

    4.4
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    Matteson, IL (27 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $38,952

    74,154 mi.
    Est. $732/mo

    Ray Chevrolet

    4.6
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    Fox Lake, IL (46 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $33,500

    116,944 mi.
    Est. $630/mo

    Master Buick GMC

    4.8
    Check Availability
    Augusta, GA (653 mi)
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  • Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4

    $39,920

    $780
    52,706 mi.
    Est. $750/mo

    Ken Garff Honda Riverdale

    4.8
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    Riverdale, UT (1,257 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4

    $37,999

    98,512 mi.
    Est. $714/mo

    Shottenkirk Toyota of Granbury

    4.4
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    Granbury, TX (854 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $36,994

    $1K
    58,343 mi.
    Est. $695/mo

    CarHeroes Ford of Lenoir

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    Lenoir, NC (528 mi)

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  • Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4Black 2020 GMC Sierra 1500 AT4

    $40,950

    88,695 mi.
    Est. $770/mo

    Chevrolet of South Anchorage

    4.6
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    Anchorage, AK (2,849 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $38,207

    $470
    64,108 mi.
    Est. $718/mo

    Wilde East Towne Honda

    4.8
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    Madison, WI (121 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $39,947

    73,375 mi.
    Est. $751/mo

    Shottenkirk Chevrolet

    4.7
    Check Availability
    Waukee, IA (323 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4Dark Sky Metallic 2020 GMC Sierra 1500 AT4

    $45,000

    $1K
    69,101 mi.
    Est. $846/mo

    Beaver Toyota Cumming

    4.7
    Check Availability
    Cumming, GA (567 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4

    $32,296

    $2.8K
    108,213 mi.
    Est. $607/mo

    Hilton Head BMW

    4.9
    Check Availability
    Bluffton, SC (764 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $35,995

    121,059 mi.
    Est. $677/mo

    Discovery Auto Group

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    Grand Junction, CO (1,116 mi)

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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $40,999

    50,365 mi.
    Est. $771/mo

    Apple Ford Apple Valley

    4.4
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    Apple Valley, MN (343 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $37,001

    80,340 mi.
    Est. $695/mo

    Van Horn Chrysler Dodge Jeep Ram Fiat of Plymouth

    4.8
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    Plymouth, WI (130 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $40,170

    58,395 mi.
    Est. $755/mo

    Glendale Chrysler Dodge Jeep RAM

    4.4
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    St. Louis, MO (270 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $31,500

    $1.5K
    107,208 mi.
    Est. $592/mo

    Chevrolet Buick GMC of Murfreesboro

    4.1
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    Murfreesboro, TN (421 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $37,704

    $1.1K
    96,709 mi.
    Est. $709/mo

    Rick Hendrick Dodge Chrysler Jeep RAM Charleston

    4.2
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    Charleston, SC (755 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4Satin Steel Metallic 2020 GMC Sierra 1500 AT4

    $36,210

    104,952 mi.
    Est. $681/mo

    Mac Haik Madison Chevrolet

    4.9
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    Madison, MS (661 mi)

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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $41,998

    81,032 mi.
    Est. $789/mo

    Classic Chevrolet Beaumont

    4.5
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    Beaumont, TX (891 mi)
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  • Smokey Quartz Metallic 2020 GMC Sierra 1500 AT4Smokey Quartz Metallic 2020 GMC Sierra 1500 AT4Smokey Quartz Metallic 2020 GMC Sierra 1500 AT4Smokey Quartz Metallic 2020 GMC Sierra 1500 AT4Smokey Quartz Metallic 2020 GMC Sierra 1500 AT4Smokey Quartz Metallic 2020 GMC Sierra 1500 AT4

    $35,049

    103,632 mi.
    Est. $659/mo

    Sheehan Buick GMC

    4.7
    Check Availability
    Lighthouse Point, FL (1,161 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $32,999

    $1K
    92,810 mi.
    Est. $620/mo

    Mercedes-Benz of Fort Lauderdale

    4.0
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    Fort Lauderdale, FL (1,172 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $37,490

    $500
    67,243 mi.
    Est. $705/mo

    Bomnin Chevrolet Dadeland

    4.8
    Check Availability
    Miami, FL (1,195 mi)
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  • Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4Onyx Black 2020 GMC Sierra 1500 AT4

    $40,581

    87,818 mi.
    Est. $763/mo

    Thunder Chrysler Dodge Jeep Ram

    4.2
    Check Availability
    Bartow, FL (1,020 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4

    $43,963

    83,077 mi.
    Est. $826/mo

    Mitchell Buick GMC

    4.8
    Check Availability
    San Angelo, TX (1,012 mi)

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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $31,200

    147,000 mi.
    Est. $586/mo

    Auto Advantage by Discovery Auto Group

    4.3
    Check Availability
    Hendersonville, NC (527 mi)
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  • BLACK 2020 GMC Sierra 1500 AT4BLACK 2020 GMC Sierra 1500 AT4BLACK 2020 GMC Sierra 1500 AT4BLACK 2020 GMC Sierra 1500 AT4BLACK 2020 GMC Sierra 1500 AT4BLACK 2020 GMC Sierra 1500 AT4

    $39,689

    63,970 mi.
    Est. $746/mo

    Auto Factory

    4.2
    Check Availability
    Peabody, MA (852 mi)
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  • Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4Red Quartz Tintcoat 2020 GMC Sierra 1500 AT4

    $35,744

    78,884 mi.
    Est. $672/mo

    Auto Solutions

    4.5
    Check Availability
    Maryville, TN (468 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4Summit White 2020 GMC Sierra 1500 AT4

    $28,998

    138,912 mi.
    Est. $545/mo

    Jake Sweeney Buick GMC

    4.7
    Check Availability
    Lebanon, OH (247 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 AT4 32 Great deals
2025 GMC Sierra 1500 AT4 $59,606 106 Great deals
2024 GMC Sierra 1500 AT4 $55,422 109 Great deals
2023 GMC Sierra 1500 AT4 $50,573 139 Great deals
2022 GMC Sierra 1500 AT4 $45,397 102 Great deals
2021 GMC Sierra 1500 AT4 $38,290 147 Great deals
2019 GMC Sierra 1500 AT4 $33,885 45 Great deals

About the 2020 GMC Sierra 1500 AT4

Basics

AT4 shown.

Seating
5
Door count
4
Drivetrain
Four Wheel Drive
Combined MPG
18
Transmission
10-Speed A/T
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
Side view of the 2020 GMC Sierra 1500 AT4
FAQs

How much does the 2020 GMC Sierra 1500 AT4 cost?

The 2020 GMC Sierra 1500 AT4 price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 1500 AT4 is $36,548, with pricing starting at $22,900.

What is the MPG of the 2020 GMC Sierra 1500 AT4?

The 2020 GMC Sierra 1500 AT4 offers up to 16 MPG in city driving and 21 MPG on the highway for a combined rating of 18 MPG.

These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle options, driving conditions, driving habits, vehicle maintenance, and other factors.

What are some similar vehicles and competitors of the 2020 GMC Sierra 1500 AT4?

The 2020 GMC Sierra 1500 AT4 compares to and/or competes against the following vehicles:


Is the 2020 GMC Sierra 1500 AT4 reliable?

The 2020 GMC Sierra 1500 has an average reliability rating of 4.7 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 1500 owners.

Ratings (69 reviews)

91% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.8
Performance
4.8
Value
4.6
Exterior
4.9
Reliability
4.7
Trims

AT4 (3 styles)

Style
4WD Double Cab 147" AT4 4WD Crew Cab 157" AT4 4WD Crew Cab 147" AT4
Inventory price
Starting at $51,300 Starting at $54,000 Starting at $53,700
Combined MPG
18 18 18
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
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GMC Sierra 1500 trims