Skip to main content
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed
Skip to Filters
  • Satin Steel Metallic 2020 GMC Sierra 1500 SLESatin Steel Metallic 2020 GMC Sierra 1500 SLE

    $16,781

    $700
    224,977 mi.
    Est. $315/mo

    Ross Downing CDJR

    4.8
    Check Availability
    Hammond, LA (803 mi)

    Quick view
  • 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

    $27,922

    67,012 mi.
    Est. $525/mo

    LaFontaine Chrysler Jeep Dodge RAM Fenton

    4.4
    Check Availability
    Fenton, MI (210 mi)

    Quick view
  • 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

    BMW of Tallahassee

    4.9
    Check Availability
    Tallahassee, FL (811 mi)
    Quick view
  • 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
    Check Availability
    Dalton, OH (318 mi)
    Quick view
  • 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
    122,304 mi.
    Est. $476/mo

    AutoNation Acura Colorado Springs

    4.6
    Check Availability
    Colorado Springs, CO (929 mi)
    Quick view
  • 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)
    Quick view
  • 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

    $31,901

    48,188 mi.
    Est. $600/mo

    Lake Chevrolet

    4.5
    Check Availability
    Devils Lake, ND (697 mi)
    Quick view
  • Quicksilver Metallic 2020 GMC Sierra 1500 SLE

    $37,876

    44,711 mi.
    Est. $712/mo

    Sapaugh GM Country

    4.8
    Check Availability
    Herculaneum, MO (291 mi)

    Quick view
  • 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

    $26,603

    $377
    120,218 mi.
    Est. $500/mo

    Bill Dodge GMC Buick

    4.5
    Check Availability
    Westbrook, ME (885 mi)
    Quick view
  • 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)
    Quick view
  • 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

    $28,995

    53,818 mi.
    Est. $545/mo

    Motor Cars Mitsubishi

    4.3
    Check Availability
    Aurora, IL (32 mi)
    Quick view
  • 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

    $27,614

    99,181 mi.
    Est. $519/mo

    Edwards Chevrolet Buick GMC

    4.7
    Check Availability
    Council Bluffs, IA (427 mi)
    Quick view
  • 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
    Check Availability
    Pompano Beach, FL (1,164 mi)
    Quick view
  • Dark Sky Metallic 2020 GMC Sierra 1500 SLEDark Sky Metallic 2020 GMC Sierra 1500 SLEDark Sky Metallic 2020 GMC Sierra 1500 SLEDark Sky Metallic 2020 GMC Sierra 1500 SLEDark Sky Metallic 2020 GMC Sierra 1500 SLEDark Sky Metallic 2020 GMC Sierra 1500 SLE

    $27,500

    74,088 mi.
    Est. $517/mo

    CarFive - Nashua, NH

    4.4
    Check Availability
    Nashua, NH (824 mi)
    Quick view
  • 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)
    Quick view
  • Black 2020 GMC Sierra 1500 SLEBlack 2020 GMC Sierra 1500 SLEBlack 2020 GMC Sierra 1500 SLEBlack 2020 GMC Sierra 1500 SLEBlack 2020 GMC Sierra 1500 SLEBlack 2020 GMC Sierra 1500 SLE

    $22,995

    168,000 mi.
    Est. $432/mo

    Avondale Auto Center

    Check Availability
    Avondale, AZ (1,466 mi)
    Quick view
  • 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)
    Quick view
  • 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

    Check Availability
    Tacoma, WA (1,740 mi)
    Quick view
  • 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

    Check Availability
    St Louis, MI (185 mi)
    Quick view
  • 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)
    Quick view
  • 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

    $32,052

    100,214 mi.
    Est. $602/mo

    Animas Hyundai

    Check Availability
    Farmington, NM (1,150 mi)
    Quick view
  • 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

    $33,586

    36,625 mi.
    Est. $631/mo

    Weathers Motors

    Check Availability
    Media, PA (651 mi)
    Quick view
  • 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)
    Quick view
  • 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

    $26,550

    91,423 mi.
    Est. $499/mo

    Paugh's Auto Sales

    Check Availability
    Binghamton, NY (604 mi)
    Quick view

GMC Sierra 1500 prices by year

Model year Average price Deals
2026 GMC Sierra 1500 SLE 8 Good deals
2025 GMC Sierra 1500 SLE $43,398 8 Great deals
2024 GMC Sierra 1500 SLE $39,663 41 Great deals
2023 GMC Sierra 1500 SLE $36,092 44 Great deals
2022 GMC Sierra 1500 SLE $33,790 12 Great deals
2021 GMC Sierra 1500 SLE $30,368 27 Great deals
2019 GMC Sierra 1500 SLE $25,716 36 Great deals
2018 GMC Sierra 1500 SLE $24,047 28 Great deals
2017 GMC Sierra 1500 SLE $20,541 26 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 $27,271, with pricing starting at $16,781.

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)
Skip to Listings
Best match Lowest price Highest price Lowest mileage Highest mileage Nearest location Best deal Newest year Oldest year Newest listed Oldest listed

GMC Sierra 1500 trims