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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

    $36,092

    $282
    89,832 mi.
    Est. $641/mo

    Sunland Park Chrysler Dodge Jeep Ram

    4.9
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    El Paso, TX (1,252 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

    $34,505

    $1.4K
    121,059 mi.
    Est. $613/mo

    Discovery Auto Group

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    Grand Junction, CO (1,116 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

    $39,097

    63,376 mi.
    Est. $694/mo

    Colonial South Chevrolet

    4.7
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    North Dartmouth, MA (857 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

    $37,654

    98,512 mi.
    Est. $669/mo

    Shottenkirk Toyota of Granbury

    4.4
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    Granbury, TX (854 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

    $43,216

    41,586 mi.
    Est. $767/mo

    Gay Family Auto

    4.8
    Check Availability
    Dickinson, TX (954 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

    $41,247

    54,000 mi.
    Est. $732/mo

    Auto Park Ford LaPorte

    4.8
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    La Porte, IN (53 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

    $39,643

    $304
    73,375 mi.
    Est. $704/mo

    Shottenkirk Chevrolet

    4.7
    Check Availability
    Waukee, IA (323 mi)
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  • Summit White 2020 GMC Sierra 1500 AT4

    $43,963

    83,077 mi.
    Est. $781/mo

    Mitchell Buick GMC

    4.8
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    San Angelo, TX (1,012 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. $624/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

    $36,635

    $366
    80,340 mi.
    Est. $650/mo

    Van Horn Chrysler Dodge Jeep Ram Fiat of Plymouth

    4.7
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    Plymouth, WI (130 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

    $39,490

    $430
    52,706 mi.
    Est. $701/mo

    Ken Garff Honda Riverdale

    4.8
    Check Availability
    Riverdale, UT (1,257 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. $727/mo

    Chevrolet of South Anchorage

    4.6
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    Anchorage, AK (2,849 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

    $37,628

    85,169 mi.
    Est. $668/mo

    Kunes Chevrolet Cadillac of Delavan

    4.2
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    Delavan, WI (73 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

    $39,953

    63,712 mi.
    Est. $709/mo

    Hardy Superstore

    4.8
    Check Availability
    Dallas, GA (572 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

    $41,349

    50,365 mi.
    Est. $734/mo

    Apple Ford Apple Valley

    4.4
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    Apple Valley, MN (343 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

    $37,105

    $483
    92,835 mi.
    Est. $659/mo

    Modern Subaru of Boone

    4.9
    Check Availability
    Boone, NC (506 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

    $35,000

    95,201 mi.
    Est. $621/mo

    Beaver Toyota Cumming

    4.7
    Check Availability
    Cumming, GA (567 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

    $34,974

    $190
    120,119 mi.
    Est. $621/mo

    Shottenkirk Toyota of Weatherford

    4.8
    Check Availability
    Weatherford, TX (838 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

    $29,000

    $799
    154,953 mi.
    Est. $515/mo

    Corwin Toyota of Bellevue

    4.5
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    Bellevue, NE (433 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

    $59,995

    39,343 mi.
    Est. $1,065/mo

    Granbury Nissan

    3.6
    Check Availability
    Granbury, TX (854 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

    58,452 mi.
    Est. $713/mo

    Glendale Chrysler Dodge Jeep RAM

    4.3
    Check Availability
    St. Louis, MO (270 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

    $36,911

    $793
    96,709 mi.
    Est. $655/mo

    Rick Hendrick Dodge Chrysler Jeep RAM Charleston

    4.2
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    Charleston, SC (755 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

    $34,058

    $170
    141,260 mi.
    Est. $605/mo

    Honda of Newnan

    4.8
    Check Availability
    Newnan, GA (608 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

    92,810 mi.
    Est. $586/mo

    Mercedes-Benz of Fort Lauderdale

    4.0
    Check Availability
    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

    $35,000

    $1K
    118,291 mi.
    Est. $621/mo

    Baxter Toyota Lincoln

    4.9
    Check Availability
    Lincoln, NE (476 mi)
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  • Cardinal Red 2020 GMC Sierra 1500 AT4Cardinal Red 2020 GMC Sierra 1500 AT4Cardinal Red 2020 GMC Sierra 1500 AT4Cardinal Red 2020 GMC Sierra 1500 AT4Cardinal Red 2020 GMC Sierra 1500 AT4Cardinal Red 2020 GMC Sierra 1500 AT4

    $43,850

    29,980 mi.
    Est. $779/mo

    GMC of Rochester

    4.4
    Check Availability
    Rochester, MN (289 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

    $46,950

    1,344 mi.
    Est. $834/mo

    Ocean Honda Santa Cruz

    4.4
    Check Availability
    Soquel, CA (1,851 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. $746/mo

    Classic Chevrolet Beaumont

    4.5
    Check Availability
    Beaumont, TX (891 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. $721/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 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. $678/mo

    Wilde East Towne Honda

    4.8
    Check Availability
    Madison, WI (121 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 AT4 40 Great deals
2025 GMC Sierra 1500 AT4 $59,348 117 Great deals
2024 GMC Sierra 1500 AT4 $55,210 118 Great deals
2023 GMC Sierra 1500 AT4 $50,286 159 Great deals
2022 GMC Sierra 1500 AT4 $45,206 118 Great deals
2021 GMC Sierra 1500 AT4 $38,303 155 Great deals
2019 GMC Sierra 1500 AT4 $34,086 43 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 $36,620, with pricing starting at $24,633.

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