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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

    $29,900

    $877
    120,015 mi.
    Est. $562/mo

    Bill Kay Downers Grove Nissan

    4.6
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    Downers Grove, IL (21 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

    $36,429

    $500
    78,851 mi.
    Est. $685/mo

    Cape Coral Chrysler Dodge Jeep Ram

    4.2
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    Cape Coral, FL (1,100 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

    $29,555

    112,884 mi.
    Est. $556/mo

    Bob Brown Chevrolet

    4.4
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    Urbandale, IA (317 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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  • 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

    $36,671

    94,443 mi.
    Est. $689/mo

    Darrell Waltrip Buick GMC

    4.8
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    Franklin, TN (415 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

    $35,985

    $100
    80,201 mi.
    Est. $676/mo

    Estero Bay Chevrolet

    4.4
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    Estero, FL (1,119 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

    $34,481

    82,179 mi.
    Est. $648/mo

    Jim Norton's T-Town Chevrolet

    4.9
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    Tulsa, OK (597 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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  • 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

    $27,000

    150,265 mi.
    Est. $508/mo

    Kirksville Motor Company

    4.9
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    Kirksville, MO (282 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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  • 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

    $34,999

    $1K
    69,291 mi.
    Est. $658/mo

    Folsom Lake Toyota

    4.6
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    Folsom, CA (1,773 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

    $35,097

    $700
    88,068 mi.
    Est. $660/mo

    Bob Howard Chrysler Dodge Jeep RAM

    4.6
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    Oklahoma City, OK (686 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

    $33,987

    92,131 mi.
    Est. $639/mo

    Holz Motors

    4.7
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    Hales Corners, WI (76 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

    $39,200

    70,000 mi.
    Est. $737/mo

    Southern Chrysler Dodge Jeep Ram Greenbrier

    4.3
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    Chesapeake, VA (703 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

    $32,495

    99,839 mi.
    Est. $611/mo

    Lakeside Chevrolet of Warsaw

    4.3
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    Warsaw, IN (102 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

    $45,995

    30,035 mi.
    Est. $865/mo

    Automotive Avenues

    4.8
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    Wall Township, NJ (713 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

    $26,395

    $600
    133,011 mi.
    Est. $496/mo

    Group 1 Acura Southwest Houston

    4.9
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    Houston, TX (953 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

    $33,789

    97,077 mi.
    Est. $635/mo

    Phil Long Hyundai of Motor City

    4.5
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    Colorado Springs, CO (929 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

    $39,354

    63,563 mi.
    Est. $740/mo

    AutoNation Chrysler Dodge Jeep Ram

    4.0
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    Phoenix, AZ (1,447 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

    $33,977

    92,856 mi.
    Est. $639/mo

    Covert Buick GMC Bee Cave

    4.6
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    Austin, TX (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

    $32,999

    99,181 mi.
    Est. $620/mo

    Napleton's Auto Park Of Urbana

    4.5
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    Urbana, IL (124 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
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    Fort Wayne, IN (140 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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  • 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

    $31,995

    $1K
    88,646 mi.
    Est. $601/mo

    Lexus of Jacksonville

    4.8
    Check Availability
    Jacksonville, FL (868 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

    $34,995

    $789
    56,859 mi.
    Est. $658/mo

    Greenway Kia West

    4.3
    Check Availability
    Orlando, FL (985 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLT 47 Great deals
2025 GMC Sierra 1500 SLT $45,168 546 Great deals
2024 GMC Sierra 1500 SLT $45,838 167 Great deals
2023 GMC Sierra 1500 SLT $44,242 71 Great deals
2022 GMC Sierra 1500 SLT $40,795 50 Great deals
2021 GMC Sierra 1500 SLT $35,741 100 Great deals
2019 GMC Sierra 1500 SLT $32,483 20 Great deals
2018 GMC Sierra 1500 SLT $27,859 70 Great deals
2017 GMC Sierra 1500 SLT $24,956 46 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 $33,507, 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