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  • Iridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 Denali

    $26,995

    $1K
    196,314 mi.
    Est. $507/mo

    Laura Buick GMC

    4.6
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    Collinsville, IL (254 mi)

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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $26,985

    $600
    162,219 mi.
    Est. $507/mo

    Kernersville Chrysler Dodge Jeep RAM

    4.3
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    Kernersville, NC (570 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $39,500

    152,990 mi.
    Est. $742/mo

    Anchorage Chrysler Dodge Jeep RAM Center

    4.8
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    Anchorage, AK (2,848 mi)
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  • Bronze Alloy Metallic 2015 GMC Sierra 3500 DenaliBronze Alloy Metallic 2015 GMC Sierra 3500 DenaliBronze Alloy Metallic 2015 GMC Sierra 3500 DenaliBronze Alloy Metallic 2015 GMC Sierra 3500 DenaliBronze Alloy Metallic 2015 GMC Sierra 3500 DenaliBronze Alloy Metallic 2015 GMC Sierra 3500 Denali

    $49,998

    40,462 mi.
    Est. $940/mo

    Jake Sweeney Buick GMC

    4.7
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    Lebanon, OH (247 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $28,492

    $299
    216,523 mi.
    Est. $536/mo

    Camp County Chrysler Dodge Jeep Ram

    4.4
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    Pittsburg, TX (732 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $40,991

    $2K
    87,748 mi.
    Est. $770/mo

    APX Auto Brokers

    4.0
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    Edmonds, WA (1,733 mi)
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  • Iridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 Denali

    $49,196

    $600
    45,396 mi.
    Est. $925/mo

    Springs Automotive Group

    4.6
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    Englewood, CO (921 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $43,799

    85,109 mi.
    Est. $823/mo

    Bolton Ford

    4.9
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    Lake Charles, LA (865 mi)
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  • Stone Blue Metallic 2015 GMC Sierra 3500 DenaliStone Blue Metallic 2015 GMC Sierra 3500 DenaliStone Blue Metallic 2015 GMC Sierra 3500 DenaliStone Blue Metallic 2015 GMC Sierra 3500 DenaliStone Blue Metallic 2015 GMC Sierra 3500 DenaliStone Blue Metallic 2015 GMC Sierra 3500 Denali

    $65,869

    68,402 mi.
    Est. $1,238/mo

    Lifted Trucks - McKinney

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    McKinney, TX (776 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $28,888

    198,595 mi.
    Est. $543/mo

    Autohaven LLC

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    Shelby Township, MI (242 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $54,944

    65,630 mi.
    Est. $1,033/mo

    44 Auto Mart - Shepherdsville

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    Shepherdsville, KY (288 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $31,990

    $1K
    150,499 mi.
    Est. $601/mo

    Northwest Auto Empire LLC

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    Kent, WA (1,732 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $23,500

    284,625 mi.
    Est. $442/mo

    Lou Dominion's Deals on Wheels-Benton Harbor

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    Benton Harbor, MI (65 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $31,859

    $2K
    184,651 mi.
    Est. $599/mo

    Hupp Auto Center

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    Tuppers Plains, OH (358 mi)
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  • Summit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 Denali

    $39,995

    117,144 mi.
    Est. $752/mo

    Globe Auto Sales

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    Louisville, KY (280 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $41,995

    87,801 mi.
    Est. $789/mo

    Taylor Chevrolet

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    Rexburg, ID (1,228 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $27,999

    181,372 mi.
    Est. $526/mo

    Alpha Motorsports Fredericksburg

    3.8
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    Fredericksburg, VA (591 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $25,500

    188,290 mi.
    Est. $479/mo

    Junction Auto Family - Chrysler Jeep Dodge Ram Buick GMC

    4.9
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    Chardon, OH (334 mi)
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  • Summit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 Denali

    $43,581

    $300
    69,348 mi.
    Est. $819/mo

    Port Orchard Ford

    4.7
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    Port Orchard, WA (1,747 mi)
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  • Iridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 DenaliIridium Metallic 2015 GMC Sierra 3500 Denali

    $30,500

    $500
    171,084 mi.
    Est. $573/mo

    Lupient Buick GMC

    4.0
    Check Availability
    Golden Valley, MN (359 mi)
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  • Summit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 DenaliSummit White 2015 GMC Sierra 3500 Denali

    $25,995

    218,452 mi.
    Est. $489/mo

    Carsandpickups.com of Dallas

    4.5
    Check Availability
    Addison, TX (796 mi)
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  • Onyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 DenaliOnyx Black 2015 GMC Sierra 3500 Denali

    $40,991

    82,955 mi.
    Est. $770/mo

    Ressler Chevrolet

    4.6
    Check Availability
    Bozeman, MT (1,197 mi)
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  • White 2015 GMC Sierra 3500 DenaliWhite 2015 GMC Sierra 3500 DenaliWhite 2015 GMC Sierra 3500 DenaliWhite 2015 GMC Sierra 3500 DenaliWhite 2015 GMC Sierra 3500 DenaliWhite 2015 GMC Sierra 3500 Denali

    $40,998

    81,702 mi.
    Est. $771/mo

    CarMax Reno

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    Reno, NV (1,683 mi)
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GMC Sierra 3500 prices by year

Model year Average price Deals
2026 GMC Sierra 3500 Denali 9 Good deals
2025 GMC Sierra 3500 Denali $81,172 19 Great deals
2024 GMC Sierra 3500 Denali $76,007 9 Great deals
2023 GMC Sierra 3500 Denali $62,836 32 Great deals
2022 GMC Sierra 3500 Denali $60,174 23 Great deals
2021 GMC Sierra 3500 Denali $56,300 16 Great deals
2020 GMC Sierra 3500 Denali $54,556 9 Great deals
2019 GMC Sierra 3500 Denali $47,501 7 Great deals
2018 GMC Sierra 3500 Denali $46,492 27 Good deals
2017 GMC Sierra 3500 Denali $44,409 24 Good deals

About the 2015 GMC Sierra 3500 Denali

Basics

Denali shown.

Seating
5
Door count
4
Drivetrain
Rear Wheel Drive
Combined MPG
0
Transmission
6-Speed A/T
Engine
360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability)
Side view of the 2015 GMC Sierra 3500 Denali
FAQs

How much does the 2015 GMC Sierra 3500 Denali cost?

The 2015 GMC Sierra 3500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2015 Sierra 3500 Denali is $37,061, with pricing starting at $23,500.

What are some similar vehicles and competitors of the 2015 GMC Sierra 3500 Denali?

The 2015 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:


Is the 2015 GMC Sierra 3500 Denali reliable?

The 2015 GMC Sierra 3500 has an average reliability rating of 4.6 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2015 Sierra 3500 owners.

Ratings (13 reviews)

92% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.6
Interior
4.8
Performance
4.7
Value
4.5
Exterior
4.7
Reliability
4.6
Trims

Denali (8 styles)

Style
4WD Crew Cab 167.7" Denali 2WD Crew Cab 167.7" Denali 2WD Crew Cab 167.7" Denali 4WD Crew Cab 167.7" Denali 2WD Crew Cab 153.7" Denali 4WD Crew Cab 153.7" Denali 2WD Crew Cab 153.7" Denali 4WD Crew Cab 153.7" Denali
Inventory price
Starting at $56,885 Starting at $50,835 Starting at $53,530 Starting at $54,190 Starting at $50,640 Starting at $56,690 Starting at $53,335 Starting at $53,995
Combined MPG
0 0 0 0 0 0 0 0
Engine
360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability) 360.0-hp, 6.0-liter, 8 Cylinder Engine (Flex Fuel Capability)
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