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  • Onyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLE

    $36,341

    106,268 mi.
    Est. $683/mo

    John Hirsch's Cambridge Motors

    4.7
    Check Availability
    Cambridge, MN (378 mi)

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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $26,499

    $1.5K
    168,740 mi.
    Est. $498/mo

    Group 1 Kia Hub City

    4.7
    Check Availability
    Lubbock, TX (968 mi)
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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $34,988

    117,253 mi.
    Est. $658/mo

    Jeff Schmitt Chevrolet South

    4.5
    Check Availability
    Miamisburg, OH (236 mi)
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  • Brownstone Metallic 2020 GMC Sierra 2500 SLEBrownstone Metallic 2020 GMC Sierra 2500 SLEBrownstone Metallic 2020 GMC Sierra 2500 SLEBrownstone Metallic 2020 GMC Sierra 2500 SLEBrownstone Metallic 2020 GMC Sierra 2500 SLEBrownstone Metallic 2020 GMC Sierra 2500 SLE

    $36,738

    $363
    101,482 mi.
    Est. $691/mo

    Green Ford - NC

    4.3
    Check Availability
    Greensboro, NC (579 mi)
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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $44,500

    76,496 mi.
    Est. $836/mo

    Seelye Select on 9th

    5.0
    Check Availability
    Kalamazoo, MI (104 mi)
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  • Onyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLE

    $43,999

    100,699 mi.
    Est. $827/mo

    Phil Long Ford of Chapel Hills

    4.5
    Check Availability
    Colorado Springs, CO (924 mi)
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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $41,369

    57,130 mi.
    Est. $778/mo

    Noller Automotive Supercenter

    4.3
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    Kalispell, MT (1,365 mi)
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  • White 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLE

    $41,995

    86,740 mi.
    Est. $789/mo

    United Auto Sales

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    Anchorage, AK (2,849 mi)
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  • Onyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLE

    $39,899

    67,146 mi.
    Est. $750/mo

    HoneyCar

    3.5
    Check Availability
    Winchester, VA (532 mi)
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  • White 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLEWhite 2020 GMC Sierra 2500 SLE

    $40,199

    84,024 mi.
    Est. $756/mo

    Bud Clary Subaru

    4.7
    Check Availability
    Longview, WA (1,764 mi)
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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $44,990

    68,542 mi.
    Est. $846/mo

    Ressler Chevrolet

    4.6
    Check Availability
    Bozeman, MT (1,197 mi)
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  • Red Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLERed Quartz Tintcoat 2020 GMC Sierra 2500 SLE

    $41,527

    71,813 mi.
    Est. $781/mo

    Weirs Motor Sales, Inc.

    4.3
    Check Availability
    Arundel, ME (876 mi)
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  • Onyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLEOnyx Black 2020 GMC Sierra 2500 SLE

    $40,000

    73,539 mi.
    Est. $752/mo

    Choice Auto Sales

    3.1
    Check Availability
    Murrysville, PA (426 mi)
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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $36,705

    80,605 mi.
    Est. $690/mo

    Seth Wadley Ford Lincoln

    3.7
    Check Availability
    Pauls Valley, OK (718 mi)
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  • BLACK 2020 GMC Sierra 2500 SLEBLACK 2020 GMC Sierra 2500 SLEBLACK 2020 GMC Sierra 2500 SLEBLACK 2020 GMC Sierra 2500 SLEBLACK 2020 GMC Sierra 2500 SLEBLACK 2020 GMC Sierra 2500 SLE

    $42,999

    72,737 mi.
    Est. $808/mo

    Comodo Motors

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    Caledonia, MI (127 mi)
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  • Quicksilver Metallic 2020 GMC Sierra 2500 SLEQuicksilver Metallic 2020 GMC Sierra 2500 SLEQuicksilver Metallic 2020 GMC Sierra 2500 SLEQuicksilver Metallic 2020 GMC Sierra 2500 SLEQuicksilver Metallic 2020 GMC Sierra 2500 SLEQuicksilver Metallic 2020 GMC Sierra 2500 SLE

    $36,480

    100,555 mi.
    Est. $686/mo

    Banner Coulson Chevrolet

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    Higginsville, MO (379 mi)
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  • Summit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLESummit White 2020 GMC Sierra 2500 SLE

    $35,335

    $325
    140,855 mi.
    Est. $664/mo

    Lakeside Chevrolet of Warsaw

    4.3
    Check Availability
    Warsaw, IN (102 mi)
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GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 SLE 5 Great deals
2025 GMC Sierra 2500 SLE $59,601 16 Great deals
2024 GMC Sierra 2500 SLE $52,621 18 Great deals
2023 GMC Sierra 2500 SLE $46,127 14 Great deals
2022 GMC Sierra 2500 SLE $41,936 18 Great deals
2021 GMC Sierra 2500 SLE $42,423 6 Great deals

About the 2020 GMC Sierra 2500 SLE

Basics

SLE shown.

Seating
3
Door count
2
Drivetrain
Rear Wheel Drive
Combined MPG
0
Transmission
6-Speed A/T
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Side view of the 2020 GMC Sierra 2500 SLE
FAQs

How much does the 2020 GMC Sierra 2500 SLE cost?

The 2020 GMC Sierra 2500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 2500 SLE is $39,092, with pricing starting at $26,499.

What are some similar vehicles and competitors of the 2020 GMC Sierra 2500 SLE?

The 2020 GMC Sierra 2500 SLE compares to and/or competes against the following vehicles:


Is the 2020 GMC Sierra 2500 SLE reliable?

The 2020 GMC Sierra 2500 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 2500 owners.

Ratings (23 reviews)

91% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.9
Performance
4.8
Value
4.5
Exterior
4.9
Reliability
4.7
Trims

SLE (10 styles)

Style
4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 2WD Crew Cab 172" SLE 2WD Crew Cab 159" SLE 4WD Double Cab 162" SLE 4WD Crew Cab 159" SLE 2WD Double Cab 162" SLE 4WD Double Cab 149" SLE 2WD Double Cab 149" SLE 4WD Crew Cab 172" SLE
Inventory price
Starting at $43,200 Starting at $40,400 Starting at $44,400 Starting at $44,200 Starting at $45,400 Starting at $47,000 Starting at $42,600 Starting at $45,200 Starting at $42,400 Starting at $47,200
Combined MPG
0 0 0 0 0 0 0 0 0 0
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
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GMC Sierra 2500 trims