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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

    $29,679

    131,281 mi.
    Est. $558/mo

    Toyota of Gastonia

    4.5
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    Gastonia, NC (579 mi)

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  • Cardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLT

    $37,592

    47,949 mi.
    Est. $707/mo

    Lenz Truck - Fond du Lac, WI

    4.5
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    Fond du Lac, WI (137 mi)

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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLT

    $30,372

    $307
    111,722 mi.
    Est. $571/mo

    Palmen Buick, GMC, Cadillac

    4.6
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    Kenosha, WI (50 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

    $32,995

    88,646 mi.
    Est. $620/mo

    Lexus of Jacksonville

    4.8
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    Jacksonville, FL (868 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

    $27,900

    107,261 mi.
    Est. $524/mo

    Sundance Chevrolet

    4.6
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    Grand Ledge, MI (161 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

    $31,194

    $1.6K
    100,048 mi.
    Est. $586/mo

    Brandon Hyundai

    4.4
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    Tampa, FL (1,008 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

    $36,995

    89,873 mi.
    Est. $695/mo

    Prestige Auto Mart of Westport

    4.6
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    Westport, MA (854 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLT

    $21,999

    190,767 mi.
    Est. $414/mo

    Lenz Truck - Minocqua, WI

    4.7
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    Minocqua, WI (292 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

    $33,595

    $405
    111,506 mi.
    Est. $631/mo

    Trent Cadillac Buick GMC

    4.9
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    New Bern, NC (742 mi)
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  • Cardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLTCardinal Red 2020 GMC Sierra 1500 SLT

    $33,990

    69,297 mi.
    Est. $639/mo

    David Scott Lee Buick GMC

    4.7
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    Crestview, FL (774 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

    $32,480

    $516
    67,814 mi.
    Est. $611/mo

    Wilde Toyota

    4.6
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    West Allis, WI (80 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

    $23,998

    168,299 mi.
    Est. $451/mo

    Lithia Chrysler Jeep Dodge of Medford

    4.7
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    Medford, OR (1,792 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

    $32,881

    $1.1K
    74,056 mi.
    Est. $618/mo

    Park Place Acura

    4.3
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    Plano, TX (791 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

    $37,393

    $299
    54,188 mi.
    Est. $703/mo

    Spitzer Chevrolet GMC Cadillac of Dubois

    4.6
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    DuBois, PA (462 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

    $31,795

    92,078 mi.
    Est. $598/mo

    Group 1 Buick GMC North

    4.4
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    Houston, TX (937 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

    $31,990

    118,270 mi.
    Est. $601/mo

    Stan McNabb Chevrolet Buick GMC Cadillac

    4.4
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    Tullahoma, TN (455 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLT

    $41,876

    45,592 mi.
    Est. $787/mo

    Jim Glover Dodge Chrysler Jeep Ram Fiat

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

    $42,999

    39,045 mi.
    Est. $808/mo

    Rairdon's Chrysler Dodge Jeep RAM of Kirkland

    4.2
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    Kirkland, WA (1,725 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

    $36,929

    78,851 mi.
    Est. $694/mo

    Cape Coral Chrysler Dodge Jeep Ram

    4.2
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    Cape Coral, FL (1,100 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

    $33,500

    $1.7K
    66,765 mi.
    Est. $630/mo

    Van Horn Ford of Lomira

    4.9
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    Lomira, WI (125 mi)

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  • Quicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLTQuicksilver Metallic 2020 GMC Sierra 1500 SLT

    $31,900

    103,451 mi.
    Est. $600/mo

    Arnie Bauer Buick GMC of Matteson

    4.4
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    Matteson, IL (27 mi)
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  • Black 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLTBlack 2020 GMC Sierra 1500 SLT

    $36,085

    80,201 mi.
    Est. $678/mo

    Estero Bay Chevrolet

    4.4
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    Estero, FL (1,119 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

    $33,800

    $190
    84,172 mi.
    Est. $635/mo

    Jarrett Gordon Ford Lincoln of Winter Haven

    4.9
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    Winter Haven, FL (1,012 mi)
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  • Yellow 2020 GMC Sierra 1500 SLTYellow 2020 GMC Sierra 1500 SLTYellow 2020 GMC Sierra 1500 SLTYellow 2020 GMC Sierra 1500 SLTYellow 2020 GMC Sierra 1500 SLTYellow 2020 GMC Sierra 1500 SLT

    $29,995

    102,312 mi.
    Est. $564/mo

    Bristol Auto Mall

    4.9
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    Levittown, PA (678 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

    $36,365

    $305
    66,032 mi.
    Est. $684/mo

    Winchester Mitsubishi

    4.3
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    Winchester, VA (532 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

    $38,995

    81,654 mi.
    Est. $733/mo

    Lithia Ford of Boise

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    Boise, ID (1,452 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

    $26,995

    133,011 mi.
    Est. $507/mo

    Group 1 Acura Southwest Houston

    4.8
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    Houston, TX (953 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. $535/mo

    Evans Toyota

    4.5
    Check Availability
    Fort Wayne, IN (140 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLT 45 Great deals
2025 GMC Sierra 1500 SLT $45,093 539 Great deals
2024 GMC Sierra 1500 SLT $45,774 145 Great deals
2023 GMC Sierra 1500 SLT $44,213 72 Great deals
2022 GMC Sierra 1500 SLT $40,875 48 Great deals
2021 GMC Sierra 1500 SLT $35,646 91 Great deals
2019 GMC Sierra 1500 SLT $32,503 17 Great deals
2018 GMC Sierra 1500 SLT $27,810 68 Great deals
2017 GMC Sierra 1500 SLT $25,062 45 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 $33,601, with pricing starting at $19,777.

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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2020 GMC Sierra 1500 SLT by popular city

GMC Sierra 1500 trims