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
  • 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
    Check Availability
    Elmhurst, IL (17 mi)

    Quick view
  • Summit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 Denali

    $57,340

    58,980 mi.
    Est. $1,018/mo

    Luther Burnsville Hyundai

    4.5
    Check Availability
    Burnsville, MN (346 mi)

    Quick view
  • Pacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 Denali

    $52,026

    68,244 mi.
    Est. $924/mo

    White's Toyota

    4.6
    Check Availability
    Lima, OH (196 mi)
    Quick view
  • Quicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 Denali

    $43,995

    $500
    122,558 mi.
    Est. $781/mo

    Auto Boutique Jacksonville

    4.6
    Check Availability
    Jacksonville, FL (870 mi)
    Quick view
  • Red Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 Denali

    $54,194

    78,421 mi.
    Est. $962/mo

    Sundance Chevrolet

    4.6
    Check Availability
    Grand Ledge, MI (161 mi)
    Quick view
  • Red Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 Denali

    $65,799

    55,055 mi.
    Est. $1,168/mo

    Stevenson-Hendrick Honda Wilmington

    5.0
    Check Availability
    Wilmington, NC (749 mi)
    Quick view
  • White Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 Denali

    $58,988

    51,386 mi.
    Est. $1,047/mo

    Jake Sweeney Chevrolet

    4.3
    Check Availability
    Cincinnati, OH (245 mi)
    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $55,346

    $2K
    50,545 mi.
    Est. $983/mo

    Luther Brookdale Chevrolet

    4.5
    Check Availability
    BROOKLYN CENTER, MN (361 mi)

    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $58,991

    $1.2K
    53,421 mi.
    Est. $1,047/mo

    AutoNation Ford Fort Worth

    4.4
    Check Availability
    Fort Worth, TX (832 mi)
    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $83,432

    21,336 mi.
    Est. $1,481/mo

    Zeigler Honda of Racine

    4.6
    Check Availability
    Mt Pleasant, WI (60 mi)
    Quick view
  • White Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 Denali

    $42,750

    $150
    149,205 mi.
    Est. $759/mo

    Serpentini Chevrolet - Strongsville

    4.4
    Check Availability
    Strongsville, OH (304 mi)
    Quick view
  • Red Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 DenaliRed Quartz Tintcoat 2020 GMC Sierra 3500 Denali

    $60,177

    36,216 mi.
    Est. $1,068/mo

    Rairdons Honda of Burien

    4.6
    Check Availability
    Burien, WA (1,733 mi)
    Quick view
  • White Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 DenaliWhite Frost Tri-Coat 2020 GMC Sierra 3500 Denali

    $49,681

    91,553 mi.
    Est. $882/mo

    Smedley's Chevrolet

    4.5
    Check Availability
    Vandalia, OH (226 mi)
    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $60,788

    $100
    51,343 mi.
    Est. $1,079/mo

    East Dallas Volkswagen

    Check Availability
    Garland, TX (796 mi)

    Quick view
  • Black 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 DenaliBlack 2020 GMC Sierra 3500 Denali

    $58,998

    49,149 mi.
    Est. $1,048/mo

    CarMax Tulsa

    4.6
    Check Availability
    Tulsa, OK (600 mi)
    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $50,573

    $110
    100,129 mi.
    Est. $898/mo

    Anderson of Hunt Valley

    4.9
    Check Availability
    Cockeysville, MD (600 mi)
    Quick view
  • White Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 Denali

    $56,014

    $408
    58,162 mi.
    Est. $995/mo

    Atwater Chevrolet

    4.6
    Check Availability
    Aitkin, MN (440 mi)
    Quick view
  • Carbon Black Metallic 2020 GMC Sierra 3500 DenaliCarbon Black Metallic 2020 GMC Sierra 3500 DenaliCarbon Black Metallic 2020 GMC Sierra 3500 DenaliCarbon Black Metallic 2020 GMC Sierra 3500 DenaliCarbon Black Metallic 2020 GMC Sierra 3500 DenaliCarbon Black Metallic 2020 GMC Sierra 3500 Denali

    $46,945

    $1.2K
    111,631 mi.
    Est. $834/mo

    VanGuard GMC

    4.9
    Check Availability
    Sherman, TX (749 mi)
    Quick view
  • Summit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 Denali

    $53,087

    79,857 mi.
    Est. $943/mo

    Jack Madden Ford

    4.3
    Check Availability
    Norwood, MA (844 mi)
    Quick view
  • White Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 DenaliWhite Frost Tricoat 2020 GMC Sierra 3500 Denali

    $45,400

    $100
    127,897 mi.
    Est. $806/mo

    Bud Weiser Motors

    4.7
    Check Availability
    Beloit, WI (83 mi)

    Quick view
  • Summit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 DenaliSummit White 2020 GMC Sierra 3500 Denali

    $61,500

    34,641 mi.
    Est. $1,092/mo

    McSweeney Chevrolet GMC Clanton

    4.4
    Check Availability
    Clanton, AL (624 mi)
    Quick view
  • Pacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 DenaliPacific Blue Metallic 2020 GMC Sierra 3500 Denali

    $50,983

    98,371 mi.
    Est. $905/mo

    My Volkswagen of North Grand Rapids

    4.3
    Check Availability
    Grand Rapids, MI (131 mi)
    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $51,495

    80,288 mi.
    Est. $914/mo

    Cole Chevrolet, Inc.

    4.2
    Check Availability
    Pocatello, ID (1,264 mi)
    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $40,475

    161,163 mi.
    Est. $719/mo

    Minnesota Motor Co

    4.6
    Check Availability
    Fergus Falls, MN (516 mi)
    Quick view
  • White 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 DenaliWhite 2020 GMC Sierra 3500 Denali

    $41,600

    $398
    133,048 mi.
    Est. $739/mo

    Berkenkotter Motors Parker

    4.7
    Check Availability
    Parker, CO (911 mi)
    Quick view
  • Quicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 DenaliQuicksilver Metallic 2020 GMC Sierra 3500 Denali

    $55,915

    $1K
    39,900 mi.
    Est. $993/mo

    Music City Autoplex

    4.8
    Check Availability
    Madison, TN (389 mi)

    Quick view
  • Onyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 DenaliOnyx Black 2020 GMC Sierra 3500 Denali

    $60,877

    $483
    48,042 mi.
    Est. $1,081/mo

    McGee Chevrolet of Middlebury

    4.9
    Check Availability
    Middlebury, VT (747 mi)
    Quick view
  • black 2020 GMC Sierra 3500 Denaliblack 2020 GMC Sierra 3500 Denaliblack 2020 GMC Sierra 3500 Denaliblack 2020 GMC Sierra 3500 Denaliblack 2020 GMC Sierra 3500 Denaliblack 2020 GMC Sierra 3500 Denali

    $60,576

    59,685 mi.
    Est. $1,076/mo

    Unique Ford

    Check Availability
    Goffstown, NH (824 mi)
    Quick view

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
2021 GMC Sierra 3500 Denali $54,407 7 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 2020 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 2020 GMC Sierra 3500 Denali
FAQs

How much does the 2020 GMC Sierra 3500 Denali cost?

The 2020 GMC Sierra 3500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2020 Sierra 3500 Denali is $54,295, with pricing starting at $15,479.

What are some similar vehicles and competitors of the 2020 GMC Sierra 3500 Denali?

The 2020 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:


Is the 2020 GMC Sierra 3500 Denali reliable?

The 2020 GMC Sierra 3500 has an average reliability rating of 4.9 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2020 Sierra 3500 owners.

Ratings (9 reviews)

100% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.9
Interior
4.9
Performance
4.9
Value
4.7
Exterior
5.0
Reliability
4.9
Trims

Denali (2 styles)

Style
4WD Crew Cab 172" Denali 4WD Crew Cab 159" Denali
Inventory price
Starting at $65,700 Starting at $65,500
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)
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