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  • Onyx Black 2025 GMC Sierra 3500 DenaliOnyx Black 2025 GMC Sierra 3500 DenaliOnyx Black 2025 GMC Sierra 3500 DenaliOnyx Black 2025 GMC Sierra 3500 DenaliOnyx Black 2025 GMC Sierra 3500 DenaliOnyx Black 2025 GMC Sierra 3500 Denali

    $81,413

    $5.7K
    23,090 mi.
    Est. $1,446/mo

    Al Piemonte Buick GMC

    4.5
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    Elmhurst, IL (17 mi)

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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $52,999

    $1.9K
    68,424 mi.
    Est. $941/mo

    Starling Buick GMC Stuart

    4.9
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    Stuart, FL (1,095 mi)

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  • White 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 Denali

    $43,999

    249,766 mi.
    Est. $781/mo

    CRM Motors Pelham

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    Pelham, AL (594 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $50,345

    108,384 mi.
    Est. $894/mo

    Inver Grove Toyota

    4.8
    Check Availability
    Inver Grove Heights, MN (344 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $51,391

    $300
    100,022 mi.
    Est. $912/mo

    Hyundai of Columbia

    4.8
    Check Availability
    Columbia, TN (433 mi)
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  • Cayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 DenaliCayenne Red Tintcoat 2021 GMC Sierra 3500 Denali

    $57,066

    $2.9K
    81,844 mi.
    Est. $1,013/mo

    Tom Bell Chevrolet

    4.3
    Check Availability
    Redlands, CA (1,689 mi)
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  • Summit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 Denali

    $58,749

    $700
    87,847 mi.
    Est. $1,043/mo

    Larry H. Miller Dodge RAM Peoria

    4.7
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    Peoria, AZ (1,454 mi)
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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $56,490

    $500
    62,000 mi.
    Est. $1,003/mo

    Bomnin Chevrolet West Kendall

    4.9
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    Miami, FL (1,197 mi)

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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $54,685

    125,924 mi.
    Est. $971/mo

    Loveland Ford Lincoln

    4.3
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    Loveland, CO (909 mi)
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  • Pacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 DenaliPacific Blue Metallic 2021 GMC Sierra 3500 Denali

    $46,125

    $500
    130,402 mi.
    Est. $819/mo

    Steve Padgett's Honda of Lake Murray

    4.9
    Check Availability
    Irmo, SC (643 mi)
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  • Black 2021 GMC Sierra 3500 DenaliBlack 2021 GMC Sierra 3500 DenaliBlack 2021 GMC Sierra 3500 DenaliBlack 2021 GMC Sierra 3500 DenaliBlack 2021 GMC Sierra 3500 DenaliBlack 2021 GMC Sierra 3500 Denali

    $53,773

    95,057 mi.
    Est. $955/mo

    Modern Chevrolet

    4.3
    Check Availability
    Winston Salem, NC (558 mi)
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  • Summit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 Denali

    $65,500

    $400
    66,068 mi.
    Est. $1,163/mo

    Elk Grove Buick GMC

    4.4
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    Elk Grove, CA (1,788 mi)
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  • White Frost 2021 GMC Sierra 3500 DenaliWhite Frost 2021 GMC Sierra 3500 DenaliWhite Frost 2021 GMC Sierra 3500 DenaliWhite Frost 2021 GMC Sierra 3500 DenaliWhite Frost 2021 GMC Sierra 3500 DenaliWhite Frost 2021 GMC Sierra 3500 Denali

    $48,199

    114,786 mi.
    Est. $856/mo

    Van Horn Chrysler Dodge Jeep Ram of Stoughton

    4.4
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    Stoughton, WI (110 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 Denali

    $57,990

    $500
    48,311 mi.
    Est. $1,030/mo

    Unlimited Motors

    4.5
    Check Availability
    Westfield, IN (148 mi)

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  • Quicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 Denali

    $38,980

    218,533 mi.
    Est. $692/mo

    Dave Kehl Chevrolet

    4.3
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    Mechanicsburg, OH (247 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $60,011

    70,513 mi.
    Est. $1,066/mo

    Anderson of Abingdon

    4.7
    Check Availability
    Abingdon, MD (616 mi)
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  • White 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 DenaliWhite 2021 GMC Sierra 3500 Denali

    $63,998

    37,929 mi.
    Est. $1,136/mo

    CarMax Fredericksburg

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    Fredericksburg, VA (592 mi)
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  • Quicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 DenaliQuicksilver Metallic 2021 GMC Sierra 3500 Denali

    $81,127

    42,377 mi.
    Est. $1,440/mo

    Dale Earnhardt Jr. Buick GMC Cadillac

    4.6
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    Tallahassee, FL (811 mi)
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  • Summit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 DenaliSummit White 2021 GMC Sierra 3500 Denali

    $53,989

    127,184 mi.
    Est. $959/mo

    Quality Chevrolet of Englewood

    4.1
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    Englewood, NJ (711 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $52,997

    89,445 mi.
    Est. $941/mo

    ClearShift - Loveland

    4.7
    Check Availability
    Loveland, CO (911 mi)

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  • White Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 Denali

    $47,169

    $1.5K
    120,769 mi.
    Est. $838/mo

    Certified AutoBrokers Inc

    4.8
    Check Availability
    Grand Island, NY (450 mi)
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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $51,890

    96,420 mi.
    Est. $921/mo

    Orange Park Chrysler Jeep Dodge Ram

    4.7
    Check Availability
    Orange Park, FL (874 mi)
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  • Onyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 DenaliOnyx Black 2021 GMC Sierra 3500 Denali

    $48,955

    $1K
    109,961 mi.
    Est. $869/mo

    Neil Huffman Honda

    4.6
    Check Availability
    Clarksville, IN (266 mi)
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  • Ebony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 DenaliEbony Twilight Metallic 2021 GMC Sierra 3500 Denali

    $53,500

    $1.5K
    90,199 mi.
    Est. $950/mo

    H. M. Brown Automotive

    5.0
    Check Availability
    Centennial, CO (913 mi)
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  • White Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 DenaliWhite Frost Tricoat 2021 GMC Sierra 3500 Denali

    $56,794

    $333
    70,136 mi.
    Est. $1,008/mo

    Land Rover Scarborough

    4.6
    Check Availability
    Scarborough, ME (884 mi)
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GMC Sierra 3500 prices by year

Model year Average price Deals
2026 GMC Sierra 3500 Denali 13 Great deals
2025 GMC Sierra 3500 Denali $80,927 31 Great deals
2024 GMC Sierra 3500 Denali $75,380 39 Great deals
2023 GMC Sierra 3500 Denali $62,973 5 Great deals
2022 GMC Sierra 3500 Denali $60,328 18 Great deals
2020 GMC Sierra 3500 Denali $54,521 8 Great deals
2019 GMC Sierra 3500 Denali $45,520 8 Great deals
2018 GMC Sierra 3500 Denali $45,825 7 Great deals
2017 GMC Sierra 3500 Denali $44,766 3 Good deals

About the 2021 GMC Sierra 3500 Denali

Basics

Denali shown.

Seating
5
Door count
4
Drivetrain
Four 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 3500 Denali
FAQs

How much does the 2021 GMC Sierra 3500 Denali cost?

The 2021 GMC Sierra 3500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 3500 Denali is $54,273, with pricing starting at $32,600.

What are some similar vehicles and competitors of the 2021 GMC Sierra 3500 Denali?

The 2021 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:


Is the 2021 GMC Sierra 3500 Denali reliable?

The 2021 GMC Sierra 3500 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 3500 owners.

Ratings (2 reviews)

100% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.5
Interior
4.5
Performance
5.0
Value
4.0
Exterior
4.5
Reliability
4.0
Trims

Denali (2 styles)

Style
4WD Crew Cab 159" Denali 4WD Crew Cab 172" Denali
Inventory price
Starting at $66,700 Starting at $66,900
Combined MPG
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)
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