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  • Summit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 Denali

    $39,995

    89,551 mi.
    Est. $752/mo

    Starling Buick GMC Stuart

    4.9
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    Stuart, FL (1,095 mi)

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  • Sonoma Red Metallic 2015 GMC Sierra 2500 DenaliSonoma Red Metallic 2015 GMC Sierra 2500 DenaliSonoma Red Metallic 2015 GMC Sierra 2500 DenaliSonoma Red Metallic 2015 GMC Sierra 2500 DenaliSonoma Red Metallic 2015 GMC Sierra 2500 DenaliSonoma Red Metallic 2015 GMC Sierra 2500 Denali

    $39,999

    96,086 mi.
    Est. $752/mo

    AutoNation Chevrolet North Corpus Christi

    4.5
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    Corpus Christi, TX (1,123 mi)

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  • Iridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 Denali

    $38,999

    $500
    96,476 mi.
    Est. $733/mo

    AutoNation Dodge Ram Colorado Springs

    4.2
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    Colorado Springs, CO (921 mi)
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  • Iridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 Denali

    $35,261

    108,195 mi.
    Est. $663/mo

    Serra of Jackson

    4.7
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    Jackson, TN (434 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $42,752

    90,896 mi.
    Est. $804/mo

    Hoblit Chrysler Dodge Jeep RAM

    4.5
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    Woodland, CA (1,802 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $41,981

    102,000 mi.
    Est. $789/mo

    Paradise Chevrolet

    4.5
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    Ventura, CA (1,785 mi)
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  • Iridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 Denali

    $47,600

    $200
    68,150 mi.
    Est. $895/mo

    Tonkin Chevrolet GMC

    5.0
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    The Dalles, OR (1,683 mi)
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  • Summit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 Denali

    $30,995

    $499
    97,988 mi.
    Est. $583/mo

    Hiller Ford

    4.4
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    Franklin, WI (76 mi)

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  • Summit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 Denali

    $30,995

    181,007 mi.
    Est. $583/mo

    Parker's Used Cars

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    Blenheim, SC (673 mi)
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  • Black 2015 GMC Sierra 2500 DenaliBlack 2015 GMC Sierra 2500 DenaliBlack 2015 GMC Sierra 2500 DenaliBlack 2015 GMC Sierra 2500 DenaliBlack 2015 GMC Sierra 2500 DenaliBlack 2015 GMC Sierra 2500 Denali

    $29,990

    139,913 mi.
    Est. $564/mo

    CV Wholesale

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    Green Bay, WI (181 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $39,900

    90,679 mi.
    Est. $750/mo

    Rides Auto Sales

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    Bismarck, ND (734 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $30,950

    165,807 mi.
    Est. $582/mo

    Leshen Auto Sales

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    Des Moines, IA (309 mi)
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  • White 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 Denali

    $21,999

    242,699 mi.
    Est. $414/mo

    Top Deals Automotive

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    Conyers, GA (606 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $32,003

    151,318 mi.
    Est. $602/mo

    Sam Leman Chevrolet Champaign

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    Champaign, IL (125 mi)
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  • Iridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 Denali

    $32,995

    $2K
    140,363 mi.
    Est. $620/mo

    Certified Car Group Holding LLC

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    Sarasota, FL (1,051 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $21,882

    169,983 mi.
    Est. $411/mo

    Mount Juliet Chrysler Dodge Jeep Ram

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    Mt. Juliet, TN (399 mi)
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  • White 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 DenaliWhite 2015 GMC Sierra 2500 Denali

    $21,780

    178,120 mi.
    Est. $409/mo

    Transportation Center Of Western New York

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    Niagara Falls, NY (452 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $37,998

    100,069 mi.
    Est. $714/mo

    Real Steal Auto Sales Inc.

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    Gastonia, NC (575 mi)
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  • Gray 2015 GMC Sierra 2500 DenaliGray 2015 GMC Sierra 2500 DenaliGray 2015 GMC Sierra 2500 DenaliGray 2015 GMC Sierra 2500 DenaliGray 2015 GMC Sierra 2500 DenaliGray 2015 GMC Sierra 2500 Denali

    $31,900

    178,997 mi.
    Est. $600/mo

    Auto Town USA

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    Caldwell, ID (1,469 mi)
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  • Onyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 DenaliOnyx Black 2015 GMC Sierra 2500 Denali

    $31,995

    $1.5K
    134,305 mi.
    Est. $601/mo

    Randy Wise Hyundai

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    Flint, MI (212 mi)
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  • Summit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 DenaliSummit White 2015 GMC Sierra 2500 Denali

    $32,998

    87,087 mi.
    Est. $620/mo

    A+ Autobrokers

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    Mt Vernon, OH (287 mi)
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  • Iridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 Denali

    $45,998

    58,513 mi.
    Est. $865/mo

    Tim Dahle Nissan Southtowne

    3.8
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    South Jordan, UT (1,261 mi)
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  • Iridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 DenaliIridium Metallic 2015 GMC Sierra 2500 Denali

    $26,900

    165,238 mi.
    Est. $506/mo

    Marsh Auto Sales LLC

    4.7
    Check Availability
    Brandon Twp, MI (224 mi)
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GMC Sierra 2500 prices by year

Model year Average price Deals
2026 GMC Sierra 2500 Denali 6 Great deals
2025 GMC Sierra 2500 Denali $75,376 36 Great deals
2024 GMC Sierra 2500 Denali $70,447 14 Great deals
2023 GMC Sierra 2500 Denali $59,935 59 Great deals
2022 GMC Sierra 2500 Denali $58,228 39 Great deals
2021 GMC Sierra 2500 Denali $56,723 17 Great deals
2020 GMC Sierra 2500 Denali $52,759 9 Great deals
2019 GMC Sierra 2500 Denali $44,278 9 Great deals
2018 GMC Sierra 2500 Denali $43,833 52 Good deals
2017 GMC Sierra 2500 Denali $41,704 30 Good deals

About the 2015 GMC Sierra 2500 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 2500 Denali
FAQs

How much does the 2015 GMC Sierra 2500 Denali cost?

The 2015 GMC Sierra 2500 Denali price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2015 Sierra 2500 Denali is $35,602, with pricing starting at $19,962.

What are some similar vehicles and competitors of the 2015 GMC Sierra 2500 Denali?

The 2015 GMC Sierra 2500 Denali compares to and/or competes against the following vehicles:


Is the 2015 GMC Sierra 2500 Denali reliable?

The 2015 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 2015 Sierra 2500 owners.

Ratings (40 reviews)

92% of drivers recommend this car

Rating breakdown (out of 5):
Comfort
4.8
Interior
4.8
Performance
4.8
Value
4.6
Exterior
4.9
Reliability
4.7
Trims

Denali (4 styles)

Style
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 $53,350 Starting at $53,740 Starting at $50,540 Starting at $56,550
Combined MPG
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)
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GMC Sierra 2500 trims