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  • Quicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLE

    $46,985

    $240
    48,847 mi.
    Est. $883/mo

    Bob Johnson Used

    4.0
    Check Availability
    Rochester, NY (519 mi)

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  • Pacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLE

    $43,486

    69,874 mi.
    Est. $817/mo

    Summit Automotive Chrysler Dodge Jeep RAM

    4.7
    Check Availability
    Fond Du Lac, WI (137 mi)

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  • Quicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLE

    $46,985

    $240
    48,847 mi.
    Est. $883/mo

    Jessica Chevrolet

    4.8
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    Honeoye Falls, NY (517 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $40,552

    76,252 mi.
    Est. $762/mo

    Heiser Chevrolet GMC of Sturgeon Bay

    4.3
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    Sturgeon Bay, WI (204 mi)
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  • Onyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLE

    $44,388

    42,095 mi.
    Est. $834/mo

    Van Horn Ford of Sheboygan

    4.8
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    Sheboygan, WI (130 mi)
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  • Cardinal Red 2021 GMC Sierra 2500 SLECardinal Red 2021 GMC Sierra 2500 SLECardinal Red 2021 GMC Sierra 2500 SLECardinal Red 2021 GMC Sierra 2500 SLECardinal Red 2021 GMC Sierra 2500 SLECardinal Red 2021 GMC Sierra 2500 SLE

    $43,585

    $906
    63,176 mi.
    Est. $819/mo

    Dena Motors

    4.2
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    Conyers, GA (603 mi)
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  • Black 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLE

    $34,277

    $1.6K
    116,589 mi.
    Est. $644/mo

    Dunning Motor Sales Chevy

    4.7
    Check Availability
    Cambridge, OH (343 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $52,688

    26,917 mi.
    Est. $990/mo

    Matt Blatt Nissan

    4.8
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    Egg Harbor Township, NJ (703 mi)
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  • Silver 2021 GMC Sierra 2500 SLESilver 2021 GMC Sierra 2500 SLESilver 2021 GMC Sierra 2500 SLESilver 2021 GMC Sierra 2500 SLESilver 2021 GMC Sierra 2500 SLESilver 2021 GMC Sierra 2500 SLE

    $42,990

    69,566 mi.
    Est. $808/mo

    Runde Ford Chrysler Dodge Jeep RAM

    4.7
    Check Availability
    Manchester, IA (202 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLE

    $34,600

    $398
    78,205 mi.
    Est. $650/mo

    Berkenkotter Motors Parker

    4.7
    Check Availability
    Parker, CO (911 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $34,999

    97,493 mi.
    Est. $658/mo

    Red's Auto & Truck

    4.0
    Check Availability
    Longmont, CO (913 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLE

    $39,850

    $1K
    85,444 mi.
    Est. $749/mo

    Cook Chevrolet Inc

    4.2
    Check Availability
    Vassar, MI (230 mi)
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  • Onyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLE

    $46,400

    70,783 mi.
    Est. $872/mo

    Edw. J. Schwarz, Inc.

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    Honesdale, PA (639 mi)
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  • Black 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLE

    $52,977

    58,222 mi.
    Est. $996/mo

    Fairfield Chevrolet - PA

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    Lewisburg, PA (560 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLEPacific Blue Metallic 2021 GMC Sierra 2500 SLE

    $44,795

    91,838 mi.
    Est. $842/mo

    Continental Auto Sales of Maryland Heights

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    Maryland Heights, MO (265 mi)
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  • Black 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLEBlack 2021 GMC Sierra 2500 SLE

    $33,957

    $2.3K
    87,466 mi.
    Est. $638/mo

    Auto Mart USA

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    Aurora, CO (913 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $38,998

    86,036 mi.
    Est. $733/mo

    Widrick Auto Sales

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    Watertown, NY (610 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $35,900

    94,334 mi.
    Est. $675/mo

    BM Motorcars

    3.5
    Check Availability
    Linden, NJ (700 mi)
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  • Blue 2021 GMC Sierra 2500 SLEBlue 2021 GMC Sierra 2500 SLEBlue 2021 GMC Sierra 2500 SLEBlue 2021 GMC Sierra 2500 SLEBlue 2021 GMC Sierra 2500 SLEBlue 2021 GMC Sierra 2500 SLE

    $36,995

    83,700 mi.
    Est. $695/mo

    John Watson Chevrolet

    3.9
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    Ogden, UT (1,256 mi)
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  • Onyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLEOnyx Black 2021 GMC Sierra 2500 SLE

    $53,598

    $200
    26,229 mi.
    Est. $1,007/mo

    Dave Smith Coeur d'Alene

    3.6
    Check Availability
    Coeur d'Alene, ID (1,475 mi)
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  • Gray 2021 GMC Sierra 2500 SLEGray 2021 GMC Sierra 2500 SLEGray 2021 GMC Sierra 2500 SLEGray 2021 GMC Sierra 2500 SLEGray 2021 GMC Sierra 2500 SLEGray 2021 GMC Sierra 2500 SLE

    $37,966

    69,340 mi.
    Est. $714/mo

    Snyder Motors Inc

    5.0
    Check Availability
    Bozeman, MT (1,195 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLE

    $40,614

    $357
    87,560 mi.
    Est. $763/mo

    Frank Leta Buick GMC

    4.1
    Check Availability
    Cape Girardeau, MO (334 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLEQuicksilver Metallic 2021 GMC Sierra 2500 SLE

    $51,499

    $460
    30,799 mi.
    Est. $968/mo

    Romeo Chevrolet Buick GMC

    4.3
    Check Availability
    Lake Katrine, NY (701 mi)
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  • Summit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLESummit White 2021 GMC Sierra 2500 SLE

    $43,701

    $924
    93,574 mi.
    Est. $821/mo

    Keim Chevrolet

    4.6
    Check Availability
    Paradise, PA (615 mi)
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GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 SLE 3 Good deals
2025 GMC Sierra 2500 SLE $59,986 27 Great deals
2024 GMC Sierra 2500 SLE $51,143 22 Great deals
2023 GMC Sierra 2500 SLE $45,397 9 Great deals
2022 GMC Sierra 2500 SLE $43,063 11 Great deals
2017 GMC Sierra 2500 SLE $29,493 5 Great deals

About the 2021 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 2021 GMC Sierra 2500 SLE
FAQs

How much does the 2021 GMC Sierra 2500 SLE cost?

The 2021 GMC Sierra 2500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 2500 SLE is $42,710, with pricing starting at $33,245.

What are some similar vehicles and competitors of the 2021 GMC Sierra 2500 SLE?

The 2021 GMC Sierra 2500 SLE compares to and/or competes against the following vehicles:


Is the 2021 GMC Sierra 2500 SLE reliable?

The 2021 GMC Sierra 2500 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 2500 owners.

Ratings (29 reviews)

75% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.7
Interior
4.6
Performance
4.3
Value
3.9
Exterior
4.6
Reliability
4.0
Trims

SLE (10 styles)

Style
4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 2WD Crew Cab 172" SLE 4WD Crew Cab 159" SLE 2WD Crew Cab 159" SLE 4WD Crew Cab 172" SLE 2WD Double Cab 162" SLE 2WD Double Cab 149" SLE 4WD Double Cab 149" SLE 4WD Double Cab 162" SLE
Inventory price
Starting at $44,400 Starting at $41,600 Starting at $45,600 Starting at $48,200 Starting at $45,400 Starting at $48,400 Starting at $43,800 Starting at $43,600 Starting at $46,400 Starting at $46,600
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