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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $31,591

    $332
    100,048 mi.
    Est. $561/mo

    Brandon Hyundai

    4.4
    Check Availability
    Tampa, FL (1,008 mi)

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  • Deep Mahogany Metallic 2020 GMC Sierra 1500 SLTDeep Mahogany Metallic 2020 GMC Sierra 1500 SLTDeep Mahogany Metallic 2020 GMC Sierra 1500 SLTDeep Mahogany Metallic 2020 GMC Sierra 1500 SLTDeep Mahogany Metallic 2020 GMC Sierra 1500 SLTDeep Mahogany Metallic 2020 GMC Sierra 1500 SLT

    $36,621

    73,934 mi.
    Est. $650/mo

    Richardson Buick GMC - Midland

    4.8
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    Midland, MI (211 mi)

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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $32,892

    82,490 mi.
    Est. $584/mo

    Holler Honda

    4.7
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    Orlando, FL (986 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $28,441

    $837
    60,403 mi.
    Est. $505/mo

    Dan Deery Toyota

    4.9
    Check Availability
    Cedar Falls, IA (250 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLT

    $39,590

    50,777 mi.
    Est. $703/mo

    Trophy Nissan

    4.6
    Check Availability
    Mesquite, TX (796 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLT

    $28,477

    95,825 mi.
    Est. $506/mo

    Evans Toyota

    4.5
    Check Availability
    Fort Wayne, IN (140 mi)
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  • Pacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLTPacific Blue Metallic 2020 GMC Sierra 1500 SLT

    $39,581

    56,663 mi.
    Est. $703/mo

    Jim Glover Dodge Chrysler Jeep Ram Fiat

    4.5
    Check Availability
    Owasso, OK (584 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLT

    $33,598

    $400
    88,994 mi.
    Est. $597/mo

    Husker Auto Group

    4.8
    Check Availability
    Lincoln, NE (474 mi)

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  • Carbon Black Metallic 2020 GMC Sierra 1500 SLTCarbon Black Metallic 2020 GMC Sierra 1500 SLTCarbon Black Metallic 2020 GMC Sierra 1500 SLTCarbon Black Metallic 2020 GMC Sierra 1500 SLTCarbon Black Metallic 2020 GMC Sierra 1500 SLTCarbon Black Metallic 2020 GMC Sierra 1500 SLT

    $29,995

    114,613 mi.
    Est. $533/mo

    Lucas Jeep Chrysler Dodge RAM

    4.7
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    Lumberton, NJ (683 mi)
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  • Red Quartz Tintcoat 2020 GMC Sierra 1500 SLTRed Quartz Tintcoat 2020 GMC Sierra 1500 SLTRed Quartz Tintcoat 2020 GMC Sierra 1500 SLTRed Quartz Tintcoat 2020 GMC Sierra 1500 SLTRed Quartz Tintcoat 2020 GMC Sierra 1500 SLTRed Quartz Tintcoat 2020 GMC Sierra 1500 SLT

    $41,180

    47,719 mi.
    Est. $731/mo

    Joyce Koons Honda Buick GMC

    4.7
    Check Availability
    Manassas, VA (574 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $38,454

    64,919 mi.
    Est. $683/mo

    Bob Howard Honda

    4.8
    Check Availability
    Oklahoma City, OK (686 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $35,816

    89,768 mi.
    Est. $636/mo

    Kenny Ross Subaru

    4.7
    Check Availability
    North Huntingdon, PA (426 mi)
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  • Onyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLT

    $43,023

    43,383 mi.
    Est. $764/mo

    Town & Country Ford

    4.7
    Check Availability
    Bessemer, AL (590 mi)
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  • Gray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLT

    $28,848

    125,142 mi.
    Est. $512/mo

    Ralph Sellers Chevrolet

    4.6
    Check Availability
    Baton Rouge, LA (811 mi)

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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $38,849

    $1.1K
    52,590 mi.
    Est. $690/mo

    Walser Polar Mazda

    4.8
    Check Availability
    White Bear Lake, MN (349 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $37,276

    $400
    90,851 mi.
    Est. $662/mo

    Hendrick Chevrolet Shawnee Mission

    4.7
    Check Availability
    Merriam, KS (420 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $35,024

    86,439 mi.
    Est. $622/mo

    Clay Cooley Nissan

    4.5
    Check Availability
    Dallas, TX (815 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $29,955

    133,528 mi.
    Est. $532/mo

    McDavid Ford

    4.6
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    Fort Worth, TX (830 mi)
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  • White Frost Tricoat 2020 GMC Sierra 1500 SLTWhite Frost Tricoat 2020 GMC Sierra 1500 SLTWhite Frost Tricoat 2020 GMC Sierra 1500 SLTWhite Frost Tricoat 2020 GMC Sierra 1500 SLTWhite Frost Tricoat 2020 GMC Sierra 1500 SLTWhite Frost Tricoat 2020 GMC Sierra 1500 SLT

    $35,999

    89,051 mi.
    Est. $639/mo

    AutoNation Hyundai Columbia

    4.5
    Check Availability
    Columbia, SC (650 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $38,921

    $1.2K
    61,994 mi.
    Est. $691/mo

    Woodland Motors

    4.7
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    Woodland, CA (1,799 mi)

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  • Onyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLT

    $32,346

    $500
    94,602 mi.
    Est. $574/mo

    Luther North Country Ford

    4.7
    Check Availability
    Minneapolis, MN (363 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $35,480

    87,023 mi.
    Est. $630/mo

    Herlong Ford

    4.7
    Check Availability
    Edgefield, SC (642 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $33,903

    $1.6K
    85,433 mi.
    Est. $602/mo

    Principle Toyota in Memphis

    4.7
    Check Availability
    Memphis, TN (487 mi)
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  • Satin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLTSatin Steel Metallic 2020 GMC Sierra 1500 SLT

    $31,997

    90,043 mi.
    Est. $568/mo

    Courtesy Mitsubishi

    4.4
    Check Availability
    Attleboro, MA (836 mi)
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  • White Frost Tri-Coat 2020 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2020 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2020 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2020 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2020 GMC Sierra 1500 SLTWhite Frost Tri-Coat 2020 GMC Sierra 1500 SLT

    $29,587

    143,906 mi.
    Est. $525/mo

    Cable Dahmer Kia of Lawrence

    4.3
    Check Availability
    Lawrence, KS (448 mi)
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  • Onyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLTOnyx Black 2020 GMC Sierra 1500 SLT

    $37,990

    $435
    43,537 mi.
    Est. $675/mo

    Frederick Chevrolet

    Check Availability
    Lebanon, PA (594 mi)

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  • Gray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLTGray 2020 GMC Sierra 1500 SLT

    $32,842

    $1.9K
    91,115 mi.
    Est. $583/mo

    City Kia

    4.5
    Check Availability
    Orlando, FL (994 mi)
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  • Summit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLTSummit White 2020 GMC Sierra 1500 SLT

    $34,680

    72,555 mi.
    Est. $616/mo

    Auto City

    4.4
    Check Availability
    El Cajon, CA (1,719 mi)
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  • Dark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLTDark Sky Metallic 2020 GMC Sierra 1500 SLT

    $30,225

    $3.7K
    73,239 mi.
    Est. $537/mo

    Group 1 Toyota Hub City

    4.7
    Check Availability
    Lubbock, TX (968 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLT 54 Great deals
2025 GMC Sierra 1500 SLT $45,768 106 Great deals
2024 GMC Sierra 1500 SLT $46,352 73 Great deals
2023 GMC Sierra 1500 SLT $44,452 61 Great deals
2022 GMC Sierra 1500 SLT $40,602 65 Great deals
2021 GMC Sierra 1500 SLT $35,687 64 Great deals
2019 GMC Sierra 1500 SLT $32,727 27 Great deals
2018 GMC Sierra 1500 SLT $27,941 60 Great deals
2017 GMC Sierra 1500 SLT $25,060 26 Great deals

About the 2020 GMC Sierra 1500 SLT

Basics

SLT shown.

Seating
5
Door count
4
Drivetrain
Rear Wheel Drive
Combined MPG
19
Transmission
10-Speed A/T
Engine
355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel)
Side view of the 2020 GMC Sierra 1500 SLT
FAQs

How much does the 2020 GMC Sierra 1500 SLT cost?

The 2020 GMC Sierra 1500 SLT price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 1500 SLT is $33,945, with pricing starting at $17,723.

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

The 2020 GMC Sierra 1500 SLT offers up to 17 MPG in city driving and 23 MPG on the highway for a combined rating of 19 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 SLT?

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


Is the 2020 GMC Sierra 1500 SLT 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

SLT (6 styles)

Style
4WD Crew Cab 147" SLT 2WD Crew Cab 147" SLT 4WD Crew Cab 157" SLT 4WD Double Cab 147" SLT 2WD Double Cab 147" SLT 2WD Crew Cab 157" SLT
Inventory price
Starting at $50,400 Starting at $46,900 Starting at $50,700 Starting at $48,000 Starting at $44,500 Starting at $47,200
Combined MPG
18 19 18 18 19 19
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-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) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel)
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GMC Sierra 1500 trims