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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $24,985

    107,274 mi.
    Est. $470/mo

    Quality Buick GMC Cadillac

    4.1
    Check Availability
    Alton, IL (245 mi)

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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $29,984

    60,988 mi.
    Est. $564/mo

    Muller Honda

    4.9
    Check Availability
    Highland Park, IL (22 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLE

    $25,500

    80,751 mi.
    Est. $479/mo

    Sarchione Chrysler Dodge Jeep Ram

    4.2
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    Dalton, OH (318 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLE

    $25,310

    $385
    122,289 mi.
    Est. $476/mo

    AutoNation Acura Colorado Springs

    4.6
    Check Availability
    Colorado Springs, CO (929 mi)
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  • Gray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLE

    $28,998

    71,779 mi.
    Est. $545/mo

    CarMax Schaumburg

    4.5
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    Schaumburg, IL (26 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLE

    $21,990

    141,995 mi.
    Est. $413/mo

    Princeton Auto Center

    4.9
    Check Availability
    Princeton, MN (391 mi)
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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $24,999

    100,374 mi.
    Est. $470/mo

    Car Buy

    4.1
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    Pompano Beach, FL (1,164 mi)
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  • White 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLE

    $25,491

    90,227 mi.
    Est. $479/mo

    Runde Chevrolet-Buick-GMC

    4.7
    Check Availability
    Platteville, WI (159 mi)
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  • White 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLEWhite 2020 GMC Sierra 1500 SLE

    $34,998

    $1K
    36,381 mi.
    Est. $658/mo

    CarMax Bristol

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    Bristol, TN (465 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLE

    $24,494

    $500
    109,651 mi.
    Est. $460/mo

    Grace Auto Group

    4.7
    Check Availability
    Morrisville, PA (678 mi)
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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $27,900

    90,929 mi.
    Est. $524/mo

    Ford of Latham

    4.1
    Check Availability
    Latham, NY (710 mi)
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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $29,500

    78,582 mi.
    Est. $555/mo

    Rogers GMC of Hermiston

    4.9
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    Hermiston, OR (1,590 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLEQuicksilver Metallic 2020 GMC Sierra 1500 SLE

    $30,998

    74,970 mi.
    Est. $583/mo

    Leskovar Mitsubishi

    4.0
    Check Availability
    Kennewick, WA (1,584 mi)
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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $27,988

    67,012 mi.
    Est. $526/mo

    LaFontaine Chrysler Jeep Dodge RAM Fenton

    4.4
    Check Availability
    Fenton, MI (210 mi)
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  • Onyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLE

    $27,995

    $496
    94,181 mi.
    Est. $526/mo

    Land Rover Tallahassee

    5.0
    Check Availability
    Tallahassee, FL (810 mi)
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  • Gray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLE

    $29,495

    79,953 mi.
    Est. $554/mo

    Miller Auto Sales

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    St Louis, MI (185 mi)
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  • Onyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLE

    $33,297

    $289
    36,625 mi.
    Est. $626/mo

    Weathers Motors

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    Media, PA (651 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLE

    $19,900

    105,571 mi.
    Est. $374/mo

    Top End Auto

    Check Availability
    North Attleborough, MA (838 mi)
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  • 2020 GMC Sierra 1500 SLE2020 GMC Sierra 1500 SLE2020 GMC Sierra 1500 SLE2020 GMC Sierra 1500 SLE2020 GMC Sierra 1500 SLE2020 GMC Sierra 1500 SLE

    $17,490

    148,103 mi.
    Est. $329/mo

    Luxurious Auto Sales Inc

    Check Availability
    Plainfield, NJ (690 mi)
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  • Gray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLEGray 2020 GMC Sierra 1500 SLE

    $31,990

    82,643 mi.
    Est. $601/mo

    Sabeti Motors

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    Tacoma, WA (1,740 mi)
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  • Smokey Quartz Metallic 2020 GMC Sierra 1500 SLESmokey Quartz Metallic 2020 GMC Sierra 1500 SLESmokey Quartz Metallic 2020 GMC Sierra 1500 SLESmokey Quartz Metallic 2020 GMC Sierra 1500 SLESmokey Quartz Metallic 2020 GMC Sierra 1500 SLESmokey Quartz Metallic 2020 GMC Sierra 1500 SLE

    $28,733

    $1.2K
    71,849 mi.
    Est. $540/mo

    John Howerton Honda

    Check Availability
    Beckley, WV (443 mi)
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  • Summit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLESummit White 2020 GMC Sierra 1500 SLE

    $29,999

    119,950 mi.
    Est. $564/mo

    Macova Auto Group Inc

    Check Availability
    El Paso, TX (1,248 mi)
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  • Onyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLEOnyx Black 2020 GMC Sierra 1500 SLE

    $22,500

    110,901 mi.
    Est. $423/mo

    Suntrup Buick GMC

    3.9
    Check Availability
    Saint Peters, MO (264 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLE 10 Good deals
2025 GMC Sierra 1500 SLE $44,011 8 Great deals
2024 GMC Sierra 1500 SLE $39,569 33 Great deals
2023 GMC Sierra 1500 SLE $36,096 36 Great deals
2022 GMC Sierra 1500 SLE $34,069 15 Great deals
2021 GMC Sierra 1500 SLE $30,008 30 Great deals
2019 GMC Sierra 1500 SLE $25,857 31 Great deals
2018 GMC Sierra 1500 SLE $24,820 21 Great deals
2017 GMC Sierra 1500 SLE $20,921 34 Great deals

About the 2020 GMC Sierra 1500 SLE

Basics

SLE shown.

Seating
6
Door count
4
Drivetrain
Rear Wheel Drive
Combined MPG
21
Transmission
10-Speed A/T
Engine
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel)
Side view of the 2020 GMC Sierra 1500 SLE
FAQs

How much does the 2020 GMC Sierra 1500 SLE cost?

The 2020 GMC Sierra 1500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 1500 SLE is $27,525, with pricing starting at $17,490.

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

The 2020 GMC Sierra 1500 SLE offers up to 20 MPG in city driving and 23 MPG on the highway for a combined rating of 21 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 SLE?

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


Is the 2020 GMC Sierra 1500 SLE 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

SLE (6 styles)

Style
2WD Crew Cab 157" SLE 2WD Double Cab 147" SLE 4WD Double Cab 147" SLE 2WD Crew Cab 147" SLE 4WD Crew Cab 157" SLE 4WD Crew Cab 147" SLE
Inventory price
Starting at $40,700 Starting at $38,000 Starting at $41,300 Starting at $40,400 Starting at $44,000 Starting at $43,700
Combined MPG
21 21 20 20 20 20
Engine
310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel)
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GMC Sierra 1500 trims