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  • Dark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLEDark Sky Metallic 2021 GMC Sierra 1500 SLE

    $30,998

    $350
    74,166 mi.
    Est. $583/mo

    Walser Polar Chevrolet

    4.3
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    White Bear Lake, MN (349 mi)

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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $24,490

    82,287 mi.
    Est. $460/mo

    Bomnin Chrysler Dodge Jeep Ram

    4.8
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    Miami, FL (1,187 mi)

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  • Pacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLEPacific Blue Metallic 2021 GMC Sierra 1500 SLE

    $27,720

    $290
    80,368 mi.
    Est. $521/mo

    Hudson Nissan of Summerville

    4.5
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    Summerville, SC (735 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $29,229

    70,856 mi.
    Est. $549/mo

    Jim Norton's T-Town Chevrolet

    4.9
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    Tulsa, OK (597 mi)
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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $34,940

    41,645 mi.
    Est. $657/mo

    Andy Mohr Ford

    4.1
    Check Availability
    Plainfield, IN (164 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $27,423

    95,605 mi.
    Est. $515/mo

    Golling Chrysler Dodge Jeep RAM

    4.8
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    Bloomfield Hills, MI (228 mi)
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  • Onyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLE

    $32,888

    $2K
    21,966 mi.
    Est. $618/mo

    Conicelli Toyota of Springfield

    4.5
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    Springfield, PA (656 mi)
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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $28,441

    74,630 mi.
    Est. $535/mo

    Minnesota Motor Co

    4.5
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    Fergus Falls, MN (516 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $27,980

    86,291 mi.
    Est. $526/mo

    Dave Kehl Chevrolet

    4.2
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    Mechanicsburg, OH (247 mi)
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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $27,995

    $500
    88,926 mi.
    Est. $526/mo

    West Chevrolet

    4.4
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    Alcoa, TN (463 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $34,950

    40,752 mi.
    Est. $657/mo

    Sid Dillon Chevrolet Fremont

    4.8
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    Fremont, NE (457 mi)
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  • Gray 2021 GMC Sierra 1500 SLEGray 2021 GMC Sierra 1500 SLEGray 2021 GMC Sierra 1500 SLEGray 2021 GMC Sierra 1500 SLEGray 2021 GMC Sierra 1500 SLEGray 2021 GMC Sierra 1500 SLE

    $28,998

    97,725 mi.
    Est. $545/mo

    CarMax Arlington/Ft. Worth

    4.7
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    Fort Worth, TX (819 mi)
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  • Onyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLEOnyx Black 2021 GMC Sierra 1500 SLE

    $28,995

    92,964 mi.
    Est. $545/mo

    AutoNation USA Henderson

    4.0
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    Henderson, NV (1,519 mi)
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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $34,998

    58,668 mi.
    Est. $658/mo

    CarMax El Cajon

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    El Cajon, CA (1,719 mi)
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  • Brownstone Metallic 2021 GMC Sierra 1500 SLEBrownstone Metallic 2021 GMC Sierra 1500 SLEBrownstone Metallic 2021 GMC Sierra 1500 SLEBrownstone Metallic 2021 GMC Sierra 1500 SLEBrownstone Metallic 2021 GMC Sierra 1500 SLEBrownstone Metallic 2021 GMC Sierra 1500 SLE

    $30,000

    71,473 mi.
    Est. $564/mo

    LaFontaine Ford Lansing

    4.4
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    Lansing, MI (168 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $28,600

    $300
    75,062 mi.
    Est. $538/mo

    Tonkin Chevrolet GMC

    5.0
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    The Dalles, OR (1,683 mi)
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  • Red 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLERed 2021 GMC Sierra 1500 SLE

    $34,998

    47,080 mi.
    Est. $658/mo

    CarMax Mechanicsburg

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    Mechanicsburg, PA (564 mi)
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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $29,999

    73,351 mi.
    Est. $564/mo

    Brian Harris Used Cars

    4.6
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    Selah, WA (1,648 mi)
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  • Summit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLESummit White 2021 GMC Sierra 1500 SLE

    $33,294

    42,706 mi.
    Est. $626/mo

    Harbin Chevrolet

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    Scottsboro, AL (507 mi)
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  • Black 2021 GMC Sierra 1500 SLEBlack 2021 GMC Sierra 1500 SLEBlack 2021 GMC Sierra 1500 SLEBlack 2021 GMC Sierra 1500 SLEBlack 2021 GMC Sierra 1500 SLEBlack 2021 GMC Sierra 1500 SLE

    $27,000

    64,000 mi.
    Est. $508/mo

    Private seller: Mike

    Contact Seller
    Sterling Heights, MI (243 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $27,988

    $1K
    113,350 mi.
    Est. $526/mo

    Performance Auto Group

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    Caldwell, ID (1,470 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLEQuicksilver Metallic 2021 GMC Sierra 1500 SLE

    $24,850

    $4.6K
    121,178 mi.
    Est. $467/mo

    Dante Auto

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    Oshkosh, WI (155 mi)
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  • Cayenne Red Tintcoat 2021 GMC Sierra 1500 SLECayenne Red Tintcoat 2021 GMC Sierra 1500 SLECayenne Red Tintcoat 2021 GMC Sierra 1500 SLECayenne Red Tintcoat 2021 GMC Sierra 1500 SLECayenne Red Tintcoat 2021 GMC Sierra 1500 SLECayenne Red Tintcoat 2021 GMC Sierra 1500 SLE

    $29,583

    86,599 mi.
    Est. $556/mo

    Randy Wise Chrysler Dodge Jeep RAM

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    Durand, MI (200 mi)
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  • White 2021 GMC Sierra 1500 SLEWhite 2021 GMC Sierra 1500 SLEWhite 2021 GMC Sierra 1500 SLEWhite 2021 GMC Sierra 1500 SLEWhite 2021 GMC Sierra 1500 SLEWhite 2021 GMC Sierra 1500 SLE

    $32,975

    71,697 mi.
    Est. $620/mo

    Cecil Atkission Ford Del Rio

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    Del Rio, TX (1,137 mi)
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GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLE 4 Good deals
2025 GMC Sierra 1500 SLE $43,688 8 Great deals
2024 GMC Sierra 1500 SLE $39,742 37 Great deals
2023 GMC Sierra 1500 SLE $36,069 40 Great deals
2022 GMC Sierra 1500 SLE $33,049 11 Great deals
2020 GMC Sierra 1500 SLE $27,401 26 Great deals
2019 GMC Sierra 1500 SLE $25,632 27 Great deals
2018 GMC Sierra 1500 SLE $23,891 21 Great deals
2017 GMC Sierra 1500 SLE $20,789 21 Great deals

About the 2021 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 2021 GMC Sierra 1500 SLE
FAQs

How much does the 2021 GMC Sierra 1500 SLE cost?

The 2021 GMC Sierra 1500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 SLE is $30,153, with pricing starting at $16,699.

What is the MPG of the 2021 GMC Sierra 1500 SLE?

The 2021 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 2021 GMC Sierra 1500 SLE?

The 2021 GMC Sierra 1500 SLE compares to and/or competes against the following vehicles:


Is the 2021 GMC Sierra 1500 SLE reliable?

The 2021 GMC Sierra 1500 has an average reliability rating of 3.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 1500 owners.

Ratings (56 reviews)

60% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.2
Interior
4.2
Performance
3.8
Value
3.6
Exterior
4.3
Reliability
3.5
Trims

SLE (5 styles)

Style
4WD Crew Cab 147" SLE 4WD Crew Cab 157" SLE 2WD Double Cab 147" SLE 2WD Crew Cab 147" SLE 4WD Double Cab 147" SLE
Inventory price
Starting at $47,100 Starting at $47,400 Starting at $41,400 Starting at $43,800 Starting at $44,700
Combined MPG
19 19 21 21 19
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)
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GMC Sierra 1500 trims